CN110085428A - A kind of compound light anode of titanium dioxide/graphene and preparation method thereof - Google Patents
A kind of compound light anode of titanium dioxide/graphene and preparation method thereof Download PDFInfo
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- CN110085428A CN110085428A CN201910397843.2A CN201910397843A CN110085428A CN 110085428 A CN110085428 A CN 110085428A CN 201910397843 A CN201910397843 A CN 201910397843A CN 110085428 A CN110085428 A CN 110085428A
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- titanium dioxide
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- ethyl alcohol
- acetone
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- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 title claims abstract description 236
- 239000004408 titanium dioxide Substances 0.000 title claims abstract description 112
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 89
- 229910021389 graphene Inorganic materials 0.000 title claims abstract description 88
- 150000001875 compounds Chemical class 0.000 title claims abstract description 43
- 238000002360 preparation method Methods 0.000 title claims description 26
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 111
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims abstract description 86
- 235000019441 ethanol Nutrition 0.000 claims abstract description 55
- PNDPGZBMCMUPRI-UHFFFAOYSA-N iodine Chemical compound II PNDPGZBMCMUPRI-UHFFFAOYSA-N 0.000 claims abstract description 20
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000011630 iodine Substances 0.000 claims abstract description 15
- WXDJHDMIIZKXSK-UHFFFAOYSA-N iodine dioxide Inorganic materials O=I=O WXDJHDMIIZKXSK-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000002994 raw material Substances 0.000 claims abstract description 6
- 239000011268 mixed slurry Substances 0.000 claims description 27
- 239000002002 slurry Substances 0.000 claims description 10
- 239000011521 glass Substances 0.000 claims description 9
- 238000002604 ultrasonography Methods 0.000 claims description 7
- 229910052740 iodine Inorganic materials 0.000 claims description 6
- 239000000843 powder Substances 0.000 claims description 6
- 239000002904 solvent Substances 0.000 claims description 5
- 238000009434 installation Methods 0.000 claims description 4
- 239000004570 mortar (masonry) Substances 0.000 claims description 4
- 230000008021 deposition Effects 0.000 claims description 2
- 229910002804 graphite Inorganic materials 0.000 claims description 2
- 239000010439 graphite Substances 0.000 claims description 2
- -1 graphite Alkene Chemical class 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 abstract description 12
- 239000010408 film Substances 0.000 description 17
- 239000000975 dye Substances 0.000 description 8
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 7
- 239000000243 solution Substances 0.000 description 7
- 229910052719 titanium Inorganic materials 0.000 description 7
- 239000010936 titanium Substances 0.000 description 7
- 238000012360 testing method Methods 0.000 description 6
- 239000003792 electrolyte Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 239000002105 nanoparticle Substances 0.000 description 4
- 241000790917 Dioxys <bee> Species 0.000 description 3
- HGWOWDFNMKCVLG-UHFFFAOYSA-N [O--].[O--].[Ti+4].[Ti+4] Chemical compound [O--].[O--].[Ti+4].[Ti+4] HGWOWDFNMKCVLG-UHFFFAOYSA-N 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 206010070834 Sensitisation Diseases 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 2
- 150000001336 alkenes Chemical class 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 230000008313 sensitization Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- JJWJFWRFHDYQCN-UHFFFAOYSA-J 2-(4-carboxypyridin-2-yl)pyridine-4-carboxylate;ruthenium(2+);tetrabutylazanium;dithiocyanate Chemical compound [Ru+2].[S-]C#N.[S-]C#N.CCCC[N+](CCCC)(CCCC)CCCC.CCCC[N+](CCCC)(CCCC)CCCC.OC(=O)C1=CC=NC(C=2N=CC=C(C=2)C([O-])=O)=C1.OC(=O)C1=CC=NC(C=2N=CC=C(C=2)C([O-])=O)=C1 JJWJFWRFHDYQCN-UHFFFAOYSA-J 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 125000002091 cationic group Chemical group 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000031700 light absorption Effects 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000033116 oxidation-reduction process Effects 0.000 description 1
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000027756 respiratory electron transport chain Effects 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000004528 spin coating Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/20—Light-sensitive devices
- H01G9/2027—Light-sensitive devices comprising an oxide semiconductor electrode
- H01G9/2031—Light-sensitive devices comprising an oxide semiconductor electrode comprising titanium oxide, e.g. TiO2
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/20—Light-sensitive devices
- H01G9/2059—Light-sensitive devices comprising an organic dye as the active light absorbing material, e.g. adsorbed on an electrode or dissolved in solution
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/542—Dye sensitized solar cells
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Hybrid Cells (AREA)
- Photovoltaic Devices (AREA)
Abstract
The invention discloses a kind of compound light anodes of titanium dioxide/graphene, including following raw material: titanium dioxide, graphene, elemental iodine, ethyl alcohol and acetone, wherein, the volume ratio of ethyl alcohol and acetone is 1:(4~5), the mass ratio of graphene and titanium dioxide is (0.1~0.2) %, the mass ratio of elemental iodine and titanium dioxide is (15~20) %, and the concentration that titanium dioxide is dissolved in ethyl alcohol is (6~7.5) mg/ml.The invention has the advantages that the charge transport properties of light anode are good, the photoelectric conversion efficiency of DSSC is high.
Description
Technical field
The invention belongs to field of dye-sensitized solar cells more particularly to a kind of compound light of titanium dioxide/graphene
Anode and preparation method thereof.
Technical background
Dye-sensitized solar cells (DSSC) is a kind of novel solar battery, due to its low cost, preparation it is simple,
The advantages that photoelectric conversion efficiency is higher, become has one of researching value and the solar battery of business potential very much, to solution
Energy shortage and realization sustainable development have great importance.
Dye-sensitized solar cells is made of five parts, is transparent conducting glass, light anode, dye sensitization respectively
Agent, oxidationreduction electrolyte and to electrode.Wherein light anode plays the effects of absorption of dyestuff, conduction photo-generated carrier, property
Matter is by critical process such as interfacial contacts between the light absorption, charge transfer, electrode and the electrolyte that directly affect battery, in DSSC
It plays an important role in the photoelectric conversion process of device, there is very high grind for improving the performance of battery and reducing cost
Study carefully value.
1991, MichaelThe study group of professor leader is prepared into film with titania nanoparticles for the first time,
And as the light anode in DSSC, the semiconductive thin film of this nanoporous increases the contact area with dyestuff, in turn
Dye Adsorption amount is increased, the photo-generated carrier that dyestuff generates can quickly pass to titanium dioxide conduction band, realize photo-generated carrier
Quick separating.Titanium dioxide has many advantages, such as cheap, nontoxic, stable, high charge transfer efficiency, becomes dye sensitization
As the first choice of light anode in solar battery.It is many that the researcher for how promoting dye-sensitized solar cells performance found,
Often attention is placed on and finds more suitable dyestuff, electrolyte more efficiently and transmission performance preferably to electrode, is but neglected
Depending on the natural defect of nano-titanium dioxide film.Studies have shown that when titania nanoparticles are as film, although it compares table
Area is larger, can adsorb a large amount of dyestuffs, but its more or biggish stomata will lead to the connection between titania nanoparticles
Property reduce, thus transmission rate of the photogenerated charge in titanium deoxid film will be made to reduce, and influence the performance of DSSC.So making
When standby titanium deoxid film, by the structure of optimization titanium deoxid film, or other substance systems are adulterated in titanium deoxid film
For at compound light anode, enhance connection and charge transport rate between titania nanoparticles, for being promoted on the whole
The performance of DSSC device has great importance.
Summary of the invention
A kind of the first purpose of the invention is to provide charge transport properties high dioxy of good, DSSC photoelectric conversion efficiency
Change the compound light anode of titanium/graphene.
To achieve the above object, present invention employs following technical solutions: a kind of compound light sun of titanium dioxide/graphene
Pole, it is characterised in that: including following raw material: titanium dioxide, graphene, elemental iodine, ethyl alcohol and acetone, wherein ethyl alcohol and acetone
Volume ratio be 1:(4~5), the mass ratio of graphene and titanium dioxide is (0.1~0.2) %, elemental iodine and titanium dioxide
Mass ratio is (15~20) %, and the concentration that titanium dioxide is dissolved in ethyl alcohol is (6~7.5) mg/ml.
Further, the compound light anode of a kind of titanium dioxide/graphene above-mentioned, in which: including following raw material: dioxy
Change titanium, graphene, elemental iodine, ethyl alcohol and acetone, wherein the volume ratio of ethyl alcohol and acetone is 1:4.5, graphene and titanium dioxide
Mass ratio be (0.1~0.2) %, the mass ratio of elemental iodine and titanium dioxide is (15~20) %, and titanium dioxide is dissolved in ethyl alcohol
Concentration be (6~7.5) mg/ml.
Through the implementation of the above technical solution, the beneficial effects of the present invention are: the charge transport properties of light anode are good, light sun
The translucency and light utilization ratio of pole are strong, and the photoelectric conversion efficiency of DSSC is high.
A second object of the present invention is to provide a kind of simple and easy, low in cost, repeatable height, non-environmental-pollution,
The preparation method of the compound light anode of the good titanium dioxide/graphene of the charge transport properties of light anode.
To achieve the above object, present invention employs following technical solutions: a kind of compound light sun of titanium dioxide/graphene
The preparation method of pole, comprising the following steps:
Step 1: titanium dioxide, graphene, elemental iodine, ethyl alcohol, acetone mixed slurry preparation, the specific steps are as follows:
Step (11): titanium dioxide is placed in mortar, adds ethyl alcohol, and then milled titanium dioxide powder is equal to dispersing
It is transferred to beaker after even, adds acetone solvent；Wherein, the volume ratio of ethyl alcohol and acetone is 1:(4~5), titanium dioxide is dissolved in
The concentration of ethyl alcohol is (6~7.5) mg/ml；
Step (12): graphene is added in the mixed slurry of titanium dioxide, ethyl alcohol and acetone that step 1 is formed, then will
Beaker is placed in ultrasound to slurry in ultrasonic cleaner and is uniformly dispersed；Wherein, the mass ratio of graphene and titanium dioxide is (0.1
~0.2) %；
Step (13): iodine list is added in the mixed slurry of titanium dioxide, graphene, ethyl alcohol and acetone that step is formed
Matter, then beaker is continued to be placed in ultrasound to slurry in ultrasonic cleaner and is uniformly dispersed, form titanium dioxide, graphene, iodine list
Matter, ethyl alcohol, acetone mixed slurry；Wherein, the mass ratio of elemental iodine and titanium dioxide is (15~20) %；
Step 2: the preparation of the compound light anode of titanium dioxide/graphene, the specific steps are as follows:
Step (21): two panels FTO glass is taken, front is opposite, and the upper part of FTO is fixed with electric installation, and external connection is straight
Galvanic electricity pressure, by two panels FTO be inserted into step 1 generation titanium dioxide, graphene, elemental iodine, ethyl alcohol, acetone mixed slurry
In；
Step (22): adding the DC voltage of 30~60V, is kept for a period of time, until cathode FTO is placed under mixed slurry
Part deposits one layer of uniform titanium dioxide/graphene film, to form the compound light anode of titanium dioxide/graphene.
Further, the preparation method of the compound light anode of a kind of titanium dioxide/graphene above-mentioned, in which: will prepare
The good compound light anode of titanium dioxide/graphene is placed in progress physics tabletting, pressure on tablet press machine and is set as (1~5) MPa,
Make the film surface of the compound light anode of titanium dioxide/graphene in smooth densifie state.
Through the implementation of the above technical solution, the beneficial effects of the present invention are:
(1) the present invention provides a kind of titanium dioxide, graphene, elemental iodine, ethyl alcohol, acetone mixed slurry, titanium dioxide
Titanium particle and graphene are uniformly dispersed in the mixed slurry, and film deposition efficiency is high；
(2) the invention proposes the compound light anode of titanium dioxide/graphene, the addition of graphene improves light anode
Charge transport properties, promote the quick transmission of light induced electron, to improve the photoelectric conversion efficiency of DSSC；With common dioxy
To change titanium light anode to compare, the photoelectric conversion efficiency of the compound light anode of titanium dioxide/graphene of the present invention is obviously improved,
Photoelectric conversion efficiency can reach 6.80%；
(3) preparation method of the compound light anode of titanium dioxide/graphene proposed by the present invention, it is simple and easy, at low cost
Honest and clean, repeatable high, non-environmental-pollution can also apply in other solar batteries as electron transfer layer, have very high
Promotional value and business potential.
Detailed description of the invention
Fig. 1 is that the short circuit current of the DSSC device prepared in the embodiment of the present invention and comparative example and open-circuit voltage comparison are illustrated
Figure.
Specific embodiment
Invention is further described in detail in the following with reference to the drawings and specific embodiments.
As shown in Figure 1, the compound light anode of a kind of titanium dioxide/graphene, including following raw material: titanium dioxide
Titanium, graphene, elemental iodine, ethyl alcohol and acetone, wherein the volume ratio of ethyl alcohol and acetone is 1:(4~5), preferred volume ratio 1:
4.5；The mass ratio of graphene and titanium dioxide is (0.1~0.2) %, the mass ratio of elemental iodine and titanium dioxide be (15~
20) %, the concentration that titanium dioxide is dissolved in ethyl alcohol is (6~7.5) mg/ml；
A kind of preparation method of the compound light anode of titanium dioxide/graphene, comprising the following steps:
Step 1: titanium dioxide, graphene, elemental iodine, ethyl alcohol, acetone mixed slurry preparation, the specific steps are as follows:
Step (11): titanium dioxide is placed in mortar, adds ethyl alcohol, and then milled titanium dioxide powder is equal to dispersing
It is transferred to beaker after even, adds acetone solvent；Wherein, the volume ratio of ethyl alcohol and acetone is 1:(4~5), titanium dioxide is dissolved in
The concentration of ethyl alcohol is (6~7.5) mg/ml；
Step (12): graphene is added in the mixed slurry of titanium dioxide, ethyl alcohol and acetone that step 1 is formed, then will
Beaker is placed in ultrasound to slurry in ultrasonic cleaner and is uniformly dispersed；Wherein, the mass ratio of graphene and titanium dioxide is (0.1
~0.2) %；
Step (13): iodine list is added in the mixed slurry of titanium dioxide, graphene, ethyl alcohol and acetone that step is formed
Matter, then beaker is continued to be placed in ultrasound to slurry in ultrasonic cleaner and is uniformly dispersed, form titanium dioxide, graphene, iodine list
Matter, ethyl alcohol, acetone mixed slurry；Wherein, the mass ratio of elemental iodine and titanium dioxide is (15~20) %；
Step 2: the preparation of the compound light anode of titanium dioxide/graphene, the specific steps are as follows:
Step (21): two panels FTO glass is taken, front is opposite, and the upper part of FTO is fixed with electric installation, and external connection is straight
Galvanic electricity pressure, by two panels FTO be inserted into step 1 generation titanium dioxide, graphene, elemental iodine, ethyl alcohol, acetone mixed slurry
In；
Step (22): adding the DC voltage of 30~60V, is kept for a period of time, until cathode FTO is placed under mixed slurry
Part deposits one layer of uniform titanium dioxide/graphene film, so that the compound light anode of titanium dioxide/graphene is formed, it will
The compound light anode of the titanium dioxide/graphene prepared is placed in progress physics tabletting, pressure on tablet press machine and is set as (1~5)
MPa makes the film surface of the compound light anode of titanium dioxide/graphene in smooth densifie state.
Specific embodiment one
A kind of preparation method of the compound light anode of titanium dioxide/graphene, comprising the following steps:
Step 1: titanium dioxide, graphene, elemental iodine, ethyl alcohol, acetone mixed slurry preparation, the specific steps are as follows:
Step (11): P25 type titania powder is placed in baking oven, is placed for 24 hours under the conditions of 240 DEG C, is taken 60mg bis-
Titanium dioxide powder is placed in mortar, adds 10ml ethyl alcohol, is then ground 10min titania powder and is shifted to after being uniformly dispersed
To 50ml beaker, adds acetone solvent and be settled to 50ml；
Step (12): graphene, graphite is added in the mixed slurry of titanium dioxide, ethyl alcohol and acetone that step 1 is formed
The quality of alkene seals up sealed membrane between 0.06~0.12mg, in beaker mouth, then places the beaker ultrasonic in ultrasonic cleaner
30min, until slurry is uniformly dispersed；
Step (13): 12mg iodine is added in the mixed slurry of titanium dioxide, graphene, ethyl alcohol and acetone that step is formed
Then simple substance seals up sealed membrane in beaker mouth, then continues to be placed in ultrasound 10min in ultrasonic cleaner for beaker, until slurry
It is uniformly dispersed, forms the mixed slurry of titanium dioxide, graphene, elemental iodine, ethyl alcohol, acetone；
Step 2: the preparation of the compound light anode of titanium dioxide/graphene, the specific steps are as follows:
Step (21): taking two panels FTO glass, and front is opposite, and the upper part of FTO is fixed with electric installation, apart 1~2cm,
Two panels FTO or less 3/4 is inserted partially into the mixing of the titanium dioxide, graphene, elemental iodine, ethyl alcohol, acetone of step 1 generation
In slurry；Two panels FTO or more 1/4 adds electrode；
Step (22): electrode exterior adds the DC voltage of 60V, keeps 10~12min, until cathode FTO is placed in mixing slurry
Part under material deposits one layer of uniform titanium dioxide/graphene film, to form the compound light sun of titanium dioxide/graphene
Pole, graphene are evenly distributed in titanium dioxide with particulate, and film surface is in uniform, formation state, by test, film thickness
About at 14~15 μm；The compound light anode of the titanium dioxide/graphene prepared is placed in progress physics tabletting on tablet press machine,
Pressure is set as 3MPa, makes the film surface of the compound light anode of titanium dioxide/graphene in smooth densifie state.
It in the present invention, is the performance for preferably characterizing the compound light anode preparation of prepared titanium dioxide/graphene,
DSSC device is assembled using the compound light anode of titanium dioxide/graphene, preparation method and device detection are as follows:
(1) dyestuff immersion and compressing tablet process: thin film region will be covered in the compound light anode of titanium dioxide/graphene with blade
It is 0.5 × 0.5cm that domain, which is cut into area,2Square, then light anode is placed in small beaker, pours into the N719 dye of 0.35mg/ml
Material (ethyl alcohol is solvent) to piece is totally submerged, and keeps for 24 hours, being protected from light.After light anode is impregnated, it is placed in tablet press machine, if
Setting pressure is 4.5MPa, is taken out after keeping 1min.
(2) to the preparation of electrode: using punch by punching among the FTO electro-conductive glass of blank, then cleaning up, make
Clean FTO electro-conductive glass, time 45s are handled with the cationic body such as vacuum.Blank FTO glass is placed in sol evenning machine, chlorine is made
The ethanol solution of platinic acid is spread evenly across FTO conductive glass surface, and sol evenning machine low speed (800 turns/min) 8s, high speed is arranged
(2000 turns/min) 30s.After spin coating, FTO is put in Muffle furnace in sintering, is warming up to 420 with the rate of 5 DEG C/min
DEG C, 20min is kept, is taken out after cooling spare；
(3) encapsulation of DSSC device.By after immersion light anode take out, using ethanol solution rinse surface, then with dry
Machine drying, has titanium dioxide/graphene conducting surface edge side to tape in light anode, uses in case making test electrode.It takes
A, B glue of equivalent are uniformly mixed, uniform in the local gluing of no titanium dioxide/graphene laminated film with scraping blade, and glue is mixed
After closing 45 min, in light anode surrounding gluing, by being put with light anode engagement staggered relatively in dry environment to electrode for punching
Set 3h.
(4) injection of electrolyte.The electrolyte (DHS-Et23) of purchase is injected with syringe by the aperture to electrode
Into battery, after there is no bubble between two electrodes, aperture is sealed on one side using adhesive tape, that is, DSSC device is prepared.
(5) cell photoelectric performance test.Battery testing instrument is J-V curve test: in oriel 94023A, USA
Under the illumination of filter (oriel, USA) type solar simulator AM 1.5G, and connect with 2400 digital sourcemeter of Keithley
It connects, is obtained by computer data acquisition.The DSSC device that test is prepared with the compound light anode of titanium dioxide/graphene,
Incident photon-to-electron conversion efficiency current -voltage curve is shown in 1 in Fig. 1.
Fig. 1 is the short circuit current and open circuit voltage curve of the DSSC device prepared in the embodiment of the present invention and comparative example, item
Part is the 1.5G sunlight of simulation；The wherein 1 DSSC device prepared for the compound light anode of titanium dioxide/graphene in embodiment
Part, the 2 DSSC devices prepared for ordinary titanium dioxide light anode in comparative example.
As comparative example, to be not added with the mixed slurry preparation of the titanium dioxide, elemental iodine, ethyl alcohol, acetone of graphene
Light anode assembles DSSC device and is tested under identical method and condition, and incident photon-to-electron conversion efficiency is shown in 2 in Fig. 1；Add stone
The light anode (embodiment) of the mixed slurry preparation of the titanium dioxide of black alkene, elemental iodine, ethyl alcohol, acetone and it is not added with graphene
The DSSC device parameter performance of light anode (comparative example) assembling of the mixed slurry preparation of titanium dioxide, elemental iodine, ethyl alcohol, acetone
It is shown in Table 1；
As shown in Table 1, the short circuit current of the DSSC device in embodiment is 15.43mA/cm2, open-circuit voltage 0.81V,
Fill factor is 54, and the photoelectric conversion efficiency of battery reaches 6.80%, compared to comparative example, JSC, FF and PCE have significantly
It improves, it was demonstrated that the compound light anode of titanium dioxide/graphene of the invention has better charge transport properties, to improve
The photoelectric conversion efficiency of DSSC device.
The data of 1 embodiment of table and the DSSC device of comparative example test
Claims (4)
1. a kind of compound light anode of titanium dioxide/graphene, it is characterised in that: including following raw material: titanium dioxide, graphite
Alkene, elemental iodine, ethyl alcohol and acetone, wherein the volume ratio of ethyl alcohol and acetone is 1:(4~5), the matter of graphene and titanium dioxide
Ratio is measured as (0.1~0.2) %, the mass ratio of elemental iodine and titanium dioxide is (15~20) %, and titanium dioxide is dissolved in the concentration of ethyl alcohol
For (6~7.5) mg/ml.
2. the compound light anode of a kind of titanium dioxide/graphene according to claim 1, it is characterised in that: including following
Raw material: titanium dioxide, graphene, elemental iodine, ethyl alcohol and acetone, wherein the volume ratio of ethyl alcohol and acetone is 1:4.5, graphene
It is (0.1~0.2) % with the mass ratio of titanium dioxide, the mass ratio of elemental iodine and titanium dioxide is (15~20) %, titanium dioxide
The concentration for being dissolved in ethyl alcohol is (6~7.5) mg/ml.
3. a kind of preparation method of the compound light anode of titanium dioxide/graphene as claimed in claim 1 or 2, feature exist
In: the following steps are included:
Step 1: titanium dioxide, graphene, elemental iodine, ethyl alcohol, acetone mixed slurry preparation, the specific steps are as follows:
Step (11): titanium dioxide is placed in mortar, adds ethyl alcohol, and then milled titanium dioxide powder is to after being uniformly dispersed
It is transferred to beaker, adds acetone solvent；Wherein, the volume ratio of ethyl alcohol and acetone is 1:(4~5), titanium dioxide is dissolved in ethyl alcohol
Concentration be (6~7.5) mg/ml；
Step (12): being added graphene in the mixed slurry of titanium dioxide, ethyl alcohol and acetone that step 1 is formed, then by beaker
Ultrasound to slurry in ultrasonic cleaner is placed in be uniformly dispersed；Wherein, the mass ratio of graphene and titanium dioxide be (0.1~
0.2) %；
Step (13): being added elemental iodine in the mixed slurry of titanium dioxide, graphene, ethyl alcohol and acetone that step is formed, then
Continue to be placed in ultrasound to slurry in ultrasonic cleaner for beaker to be uniformly dispersed, forms titanium dioxide, graphene, elemental iodine, second
The mixed slurry of alcohol, acetone；Wherein, the mass ratio of elemental iodine and titanium dioxide is (15~20) %；
Step 2: the preparation of the compound light anode of titanium dioxide/graphene, the specific steps are as follows:
Step (21): two panels FTO glass is taken, front is opposite, and the upper part of FTO is fixed with electric installation, external connection direct current
Pressure, by two panels FTO be inserted into step 1 generation titanium dioxide, graphene, elemental iodine, ethyl alcohol, acetone mixed slurry in；
Step (22): adding the DC voltage of 30~60 V, is kept for a period of time, until cathode FTO is placed in the portion under mixed slurry
Divide deposition one layer of uniform titanium dioxide/graphene film, to form the compound light anode of titanium dioxide/graphene.
4. a kind of preparation method of the compound light anode of titanium dioxide/graphene as claimed in claim 3, it is characterised in that:
The compound light anode of the titanium dioxide/graphene prepared is placed on tablet press machine progress physics tabletting, pressure be set as (1~
5) MPa makes the film surface of the compound light anode of titanium dioxide/graphene in smooth densifie state.
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