CN106229535A - The device utilizing three electrode storage biological powers and the method storing biological power thereof - Google Patents
The device utilizing three electrode storage biological powers and the method storing biological power thereof Download PDFInfo
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- CN106229535A CN106229535A CN201610816217.9A CN201610816217A CN106229535A CN 106229535 A CN106229535 A CN 106229535A CN 201610816217 A CN201610816217 A CN 201610816217A CN 106229535 A CN106229535 A CN 106229535A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/16—Biochemical fuel cells, i.e. cells in which microorganisms function as catalysts
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- 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
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
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Abstract
The invention discloses the device utilizing three electrode storage biological powers and the method storing biological power thereof.Device includes anode chamber, electric capacity room, cathode chamber and ion exchange membrane, anode chamber is separated by ion exchange membrane with cathode chamber respectively with electric capacity room, electric capacity room, in electric capacity room, add phosphate buffer, add in the anode compartment and produce electricity bacterium and Organic substance formation microbiological fuel cell MFC anode chamber.The electronics producing electricity bacterium generation being attached in charging stage, anode chamber on anode is delivered on the capacitance electrode in electric capacity room store by external circuit；At discharge regime, the electronics stored on the capacitance electrode of full electricity is quickly delivered on cathode electrode by external circuit, and the electron acceptor in negative electrode obtains electronics, thus realizes the raising of the power density of battery output.
Description
Technical field
The present invention relates to microbiological fuel cell field, a kind of device utilizing three electrode storage biological powers and
It stores the method for biological power.
Background technology
The problem of environmental pollution being on the rise and seek the new energy be the mankind face on sustainable development path two
Big fundamental issue.Along with expanding economy, garbage be treated as an important problem.Wherein industrial wastewater composition is multiple
Miscellaneous, strong toxicity, effect on environment is severe, deals with difficulty very big.But, energy consumption is a material impact in sewage disposal
Factor.In the U.S., the electric power in the whole nation 5% is used for the operation of water delivery infrastructure, and 1.5% electric power is utilized separately at sewage
Reason.
The exhaustion of Fossil fuel, the mankind have to find new alternative energy source.Environmental problem day by day serious, the mankind are necessary
Examine closely and readjust the energy structure.And garbage is the most valueless at all, it is critical only that how the mankind utilize.In such overall background
Under, microbiological fuel cell (Microbial fuel cells is called for short MFCs) arises at the historic moment.Microbiological fuel cell is with micro-
The biological device for catalyst, the chemical energy in Organic substance being converted into electric energy, thus reach to process pollutant and product simultaneously
The purpose of raw energy, has therefore attracted the concern of numerous researcher.
Owing to the utilization ratio also ratio of microbiological fuel cell is relatively low at present, improve the utilization of microbiological fuel cell
On the one hand efficiency accelerate the clearance of COD, on the other hand improves the power density of microbiological fuel cell, is current research heat
Point.And three electrode microbial fuel cell units can well meet these 2 requirements above, for microbiological fuel cell
Actual application have great importance.
Summary of the invention
It is an object of the invention to the device by three electrode microbiological fuel cells, improve the transmission efficiency of electronics, from
And improve the power density of microbiological fuel cell and accelerate microbiological fuel cell and utilize the speed of COD, thus widen micro-
Biological fuel cell range of application, promotes microbiological fuel cell development and application.
Realize the technical scheme that the object of the invention used to include:
Utilize the device of three electrode storage biological powers, including anode chamber, electric capacity room, cathode chamber and ion exchange membrane, electric capacity room
Between anode chamber and cathode chamber, anode chamber and electric capacity room, electric capacity room and cathode chamber are all separated by ion exchange membrane, anode chamber
And electric capacity room, have ON-OFF control circuit between electric capacity room and cathode chamber cut-off road；In described electric capacity room, electrode uses capacitive character
Electrode, described capacitive electrode is to modify the making of super capacitor material on the base material electrode of pretreatment to have supercapacitive
Capacitive electrode；Electrode in anode is that on the base material electrode of pretreatment prepared by the preferable material of the modified biological compatibility
Obtain, add in described anode chamber and produce electricity antibacterial and Organic substance formation microbiological fuel cell MFC anode chamber.
Further, described electric capacity room adds phosphate buffer solution, keeps electronic equilibrium；If the product electricity bacterium in anode chamber
For pure bacterium, in electric capacity room, the phosphate buffer of pH=8 to be used is filled full；If the product electricity bacterium in anode chamber is mixed vaccine, in electric capacity room
The phosphate buffer of pH=7 to be used is filled full.
Further, the catholyte added in described cathode chamber is potassium ferricyanide aqueous solution or the aqueous solution being passed through air,
The concentration of described potassium ferricyanide aqueous solution is preferably 50-100mmol/L.
Further, described pretreatment refers to be placed in by base material electrode in the hydrogen peroxide solution that mass fraction is 10wt%,
At 90 DEG C, water-bath is boiled 2 hours, then boils 2 hours with deionized water water-bath at 90 DEG C, then uses oven for drying.
Further, on the base material electrode of described pretreatment modify super capacitor material method include Electrochemical Modification,
Chemical deposition, physical bond method or condensation seasoning；Wherein Electrochemical Modification includes constant potential plating, constant voltage plating, follows
Ring voltammetry is electroplated, and chemical deposition is sol-gal process, physical bond method include utilizing politef thermo-compression bonding or
Nafion bonds.
Further, on the base material electrode of described pretreatment, the method for modified biological compatibility material includes that electrochemistry is repaiied
The modification of decorations, chemical deposition, physical bond method or condensation seasoning；Wherein Electrochemical Modification includes constant potential plating, constant voltage
Plating, cyclic voltammetry plating, chemical deposition is sol-gal process, and physical bond method includes utilizing politef hot pressing to glue
Knot or Nafion bonding.
Further, described base material electrode is the biology modified through Graphene or the preferable material of the other biological compatibility
The material that the compatibility is preferable, electric conductivity is strong, including carbon cloth, graphite felt, carbon felt, carbon paper, stainless (steel) wire, nickel foam, stainless steel brush,
Black lead brush, Plant fiber's brush or sponge.
Further, during described super capacitor material includes electric double layer capacitance electrode material and fake capacitance electrode material
More than Zhong.
Further, described electric double layer capacitance electrode material, for utilizing the large specific surface area of material own, at electrode electricity
Solve the material of matter interface stored charge, including activated carbon, mesoporous carbon, Graphene and oxide thereof or CNT.
Further, described eagle capacitance electrode material, reacts for the faraday relying on the prompt high of material own reversible
Realize storage electricity material, including ruthenic oxide, manganese dioxide, iron oxides, polypyrrole, polyaniline, polyacetylene, polyvinyl alcohol or
Poly-polyphenol.
Further, described produce electricity antibacterial include having electricity generation ability Shewanella, in bacillus and escherichia coli
More than one.
Further, described Organic substance include lactic acid, acetic acid, glucose, citric acid, reality can biochemical waste water and they
Corresponding salt in more than one.
Utilize the method that the device of three electrode storage biological powers stores biological power: use between anode chamber and electric capacity room
The material of good conductivity connects；It is connected with the material of good conductivity between electric capacity room and cathode chamber, and goes to control with switch
The connection of circuit；In the charging stage, switching off, the electronics producing electricity bacterium generation being attached in anode chamber on anode passes through dispatch from foreign news agency
Road is delivered on the capacitance electrode in electric capacity room store；In discharge regime, switch connection, store on the capacitance electrode of full electricity
Electronics be quickly delivered on cathode electrode by external circuit, the electron acceptor in negative electrode obtains electronics, thus it is defeated to realize battery
The raising of the power density gone out.
Further, the material of described good conductivity includes titanium silk or iron wire.
Compared with prior art, the invention have the advantages that and beneficial effect:
(1) traditional microbiological anode of fuel cell room is split as anode chamber and electric capacity room by the present invention, can avoid capacitance material
By bacteria corrosion, thus affect the performance of microbiological fuel cell.
(2) accessing two switches in circuit, simple and effective can control different circuit cut-offs road, beneficially anode
The collection of electronics being delivered in time on capacitance electrode in room, the electronics on capacitance electrode quickly discharges thus increases microorganism
The output of fuel cell.
(3) present invention is by having bigger serface, good conductivity, the electrode material of good biocompatibility to load after modifying
The anode chamber of microbiological fuel cell, loads the electric capacity of microbiological fuel cell by the electrode being modified with super capacitor material
Room, forms built-in capacitor system at inside battery.
(4) in the charging stage, the electronics of generation is delivered to capacitance electrode in time, microbial film and electrode can be accelerated
Between electric potential difference, thus accelerate the transmission efficiency of electronics, improve the clearance of COD.
(5) three-electrode system is less to the loss of electrode, it is not necessary to often go to change electrode, such that it is able to save substantial amounts of
Manpower and time, reality application there is broader prospect.
Accompanying drawing explanation
Fig. 1 is the apparatus structure schematic diagram utilizing three electrode storage biological powers that embodiment 1 prepares；
Fig. 2 is the dual electrode cell structural representation that embodiment 2 prepares；
Voltage under different running method under the conditions of the different battery maximum power densities that Fig. 3 is embodiment 1 and embodiment 2 prepares
Situation of change；
Fig. 4 is embodiment 1 and the power density curve chart of the prepared different batteries of embodiment 2.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is more specifically described in detail, but embodiments of the present invention do not limit
In this, for the technological parameter indicated the most especially, can refer to routine techniques and carry out.
It is prepared by the device of three electrode storage bioenergy
Anode electrode is as follows with the processing method of capacitance electrode:
By black lead brush and carbon paper as in the hydrogen peroxide solution that mass fraction is 10wt%, at 90 DEG C, water-bath boils 2 hours, then
Boil 2 hours with deionized water water-bath at 90 DEG C, then use oven for drying.
(1) preparation of anode electrode:
Weigh 250mg graphene oxide powder to be placed in 100ml beaker, measure 50ml deionized water with graduated cylinder and pour beaker into and enter
Row dissolves, and stirs 10 ~ 30 minutes, is then placed in ultrasonic washing unit supersound process 10 ~ 30min, is subsequently agitated for 10 ~ 30 minutes,
Obtain graphene oxide dispersion liquid；Then take (30-40ml) graphene oxide dispersion liquid to be divided in 50ml centrifuge tube, do
Good labelling；Again the black lead brush that pretreatment is good is put in centrifuge tube, be allowed to be totally submerged in graphene oxide dispersion liquid.
Centrifuge tube is put into ultrasonic washing unit supersound process 1h, after taking-up, puts into baking oven, be aged 24h at 60 DEG C, obtain
The graphene oxide hydrosol being gathered on black lead brush support.
The graphene oxide hydrosol being baked is taken out, is immediately placed in liquid nitrogen freezing 1h, the coldest
Freeze dried 3 days, obtain 3D graphene oxide aeroge and be deposited on black lead brush；Unnecessary aeroge is struck off, then
Obtain 3D graphene oxide aeroge-black lead brush electrode.
(2) preparation of capacitance electrode:
The method of modifying of carbon paper is: take 8ml deionized water, adds 1g polyvinyl alcohol, strong agitation under the conditions of 85 DEG C；Meanwhile, exist
The deionized water of 2ml dissolves 1g lithium chloride and prepares lithium chloride solution；After polyvinyl alcohol is completely dissolved, lithium chloride solution is fallen
Enter, be stirred for 30min and treat that it is completely dissolved and mixes completely, obtain colloidal electrolyte.
The colloidal electrolyte obtained is evenly coated on carbon paper, and connects titanium silk and make wire.
(3) preparation method of negative electrode pretreating graphite felt is as follows:
Hydrogen peroxide solution water-bath at 90 DEG C that graphite felt is placed in 10% is boiled 2 hours, then with isopyknic deionized water same
At a temperature of one, water-bath is boiled 2 hours, then uses oven for drying；
Pretreated graphite felt is cut into (long 4cm × wide 4cm) size, puts on titanium silk.
(4) device assembles:
With AB glue, graphene oxide aeroge-black lead brush electrode is glued with anode chamber's housing aperture, again will with same method
Capacitance electrode loads electric capacity room, graphite felt loads cathode chamber, places and make it solidify in 5 ~ 10 minutes.
Ion exchange membrane is pressed on cathode chamber housing, then with capacitance pole housing by solid to cathode shell, ion exchange membrane
Determine to live, then be pressed on the housing of electric capacity room with another ion exchange membrane, then with anode casing by capacitance pole housing, ion exchange
Film is fixed, screw nut of finally screwing on.
By 50-100mmol L-1Potassium ferricyanide solution join in cathode casing by negative electrode liquid filling hole, recycle silicon plug
It is stoppered.
Sodium lactate solution is joined in anode cassette by anode liquid filling hole that (in battery, sodium lactate solution concentration is 800
Mmol/L), adding the 2-10 pure bacterium of ml Xi Washi, be eventually adding the phosphate buffer solution of pH=8.0, recycle silicon plug is stoppered,
Rear two step operations are all carried out on aseptic working platform, are obtained by the device of three electrode storage biological powers.
In device external circuit, connect the resistance of 1000 Ω, using titanium silk as conductive material, connect data acquisition unit and carry out
Gathering data, arranging collection data break is to gather once for 5 minutes；During until cell voltage reaches stable, start battery success；
By using intermittent cyclic method of testing (Fed-batch Cycle Test Method) measured power density.Respectively 1000,
500, record a complete MFC intermittent cycle under 250,200,100,50,25 ohmages respectively and reach maximum stablizing
Voltage.
Embodiment 1
As it is shown in figure 1, anode is made up of positive wire titanium silk 12, graphene modified layer 3, base material electrode graphite brush 4；
Pretreating graphite brush and carbon paper is prepared according to following steps:
By black lead brush and carbon paper as in the hydrogen peroxide solution that mass fraction is 10wt%, at 90 DEG C, water-bath boils 2 hours, then
Boil 2 hours with deionized water water-bath at 90 DEG C, then use oven for drying.
The preparation of anode electrode:
(1) black lead brush is made the cylindrical graphite brush sample of a diameter of 3cm, a length of 5cm；
(2) modification of black lead brush: modify black lead brush with the graphene oxide of 5mg/ml, concrete operation method is: weigh
The graphene oxide of 250mg, is dissolved in the deionized water of 50ml, and first stirring 30 minutes, the most ultrasonic 30 minutes, are subsequently agitated for
30 minutes, obtain graphene oxide dispersion liquid；By above-mentioned graphene oxide dispersion 30ml down in the centrifuge tube of 50ml, will
Black lead brush is placed in centrifuge tube, lid of screwing on, and centrifuge tube is put into ultrasonic washing unit supersound process 1h, in baking oven 60 DEG C aging
24h, places into freezing 1h in liquid nitrogen, and lyophilization processes 3 days the most under vacuum conditions, obtains 3D graphene oxide airsetting
Glue is also deposited on black lead brush；Unnecessary aeroge is struck off, then obtains 3D graphene oxide aeroge-black lead brush electrode.
The preparation of capacitance electrode:
As it is shown in figure 1, capacitance electrode is by capacitance electrode wire titanium silk 12, super capacitor material decorative layer 5,6 groups of base material electrode
Become；
The method of modifying of carbon paper is: take 8ml deionized water, adds 1g polyvinyl alcohol, strong agitation under the conditions of 85 DEG C.Meanwhile, exist
The deionized water of 2ml dissolves 1g lithium chloride and prepares lithium chloride solution；After polyvinyl alcohol is completely dissolved, lithium chloride solution is fallen
Enter, be stirred for 30min and treat that it is completely dissolved and mixes completely, obtain colloidal electrolyte.
The colloidal electrolyte obtained is evenly coated on carbon paper, and connects titanium silk and make wire.
The preparation of cathode electrode:
Negative electrode is the graphite felt of unmodified, the method for its pretreatment: graphite felt is water-soluble as the dioxygen that mass fraction is 10wt%
In liquid, at 90 DEG C, water-bath is boiled 2 hours, then boils 2 hours with the water-bath at 90 DEG C of isopyknic deionized water, then dries with baking oven
Dry；
Pretreated graphite felt is cut into the square dice of 4 × 4cm, puts on titanium silk.
Device assembles:
A titanium silk on modified anode is passed outward by interior by () from anode casing aperture, modified anode plane and anode casing plate
Plane is parallel；
B titanium silk is glued with anode casing aperture by () with AB glue, place and make it solidify in 5 minutes.
Capacitance electrode, negative electrode through pretreatment by (a) (b) method, is loaded electric capacity room, cathode chamber, then exchanged by ion
Mould is on electric capacity room, cathode chamber housing, and then cathode shell, ion exchange membrane are fixed by electricity consumption room housing, then with another
One ion exchange membrane is pressed on the housing of electric capacity room, electric capacity room housing, ion exchange membrane is fixed with anode chamber, finally screws on
Screw nut.
Fig. 1 is the prepared apparatus structure schematic diagram utilizing three electrode storage biological powers, including filling opening 1, anode chamber
Housing 2, graphene oxide decorative layer 3, black lead brush base electrode 4, polyvinyl alcohol decorative layer 5, carbon paper substrate electrode 6, graphite felt
Base electrode 7, electric capacity room housing 8, cathode chamber housing 9, external resistance 10, switch 11, wire titanium silk 12, ion exchange membrane 13.
After battery is completed, adding the Shewanella liquid of 10ml in anolyte, 1ml concentration is the breast of 800mmol/L
Acid sodium solution, then fills full with the phosphate buffer of pH=8, and electric capacity room is directly filled full with the phosphate buffer of pH=8, negative electrode
The room potassium ferricyanide (50 mmol L-1) phosphate buffer of pH=8 of making electron acceptor fills full.Accessing resistance is 250 ohm
Circuit in, the situation of change of recording voltage.
The formula of the phosphate buffer of pH=8 is (g/L) disodium hydrogen phosphate dodecahydrate: 67.84；Two hypophosphite monohydrate dihydros
Sodium: 1.65；Sodium chloride: 11.76；Ammonium chloride: 0.5；Potassium chloride: 0.2.Wherein, every liter of solution needs to add the mineral of 10ml
Matter is with vitamin.
Embodiment 2
Present embodiment is as different from Example 1 without three-electrode system, but only uses bipolar electrode system as shown in Figure 2,
Including filling opening 1, anode chamber's housing 2, graphene oxide decorative layer 3, black lead brush base electrode 4, graphite felt base electrode 7, from
Proton exchange 8, cathode chamber housing 9, titanium silk 12.
Present embodiment need not electric capacity room, and concrete operation method is: will modify through graphene oxide in embodiment 1
Black lead brush and through pretreatment carbon felt according in embodiment 1 (a) (b) method load anode chamber, cathode chamber, then by ion hand over
Change mould on cathode chamber housing, with anode chamber, cathode chamber housing, ion exchange membrane are fixed, screw nut of finally screwing on.
After battery is completed, adding the Shewanella liquid of 10ml in anolyte, 1ml concentration is the breast of 800mmol/L
Acid sodium solution, then fills full, the cathode chamber potassium ferricyanide (50 mmol L with the phosphate buffer of pH=8-1) make electron acceptor
The phosphate buffer of pH=8 fill full.Access in the circuit that resistance is 250 ohm, the situation of change of recording voltage.
Electricity under different running method under the conditions of the different battery maximum power densities that Fig. 3 is embodiment 1 and embodiment 2 obtains
The situation of change of pressure, from the figure 3, it may be seen that the voltage of three-electrode battery is higher than the voltage of dual electrode cell.
Embodiment 3
Battery in embodiment 1 and 2 is connected in external circuit the resistance of 1000 Ω, connects data acquisition unit and be acquired number
According to, arranging collection data break is to gather once for 5 minutes.During until cell voltage reaches stable, start battery success.By adopting
By intermittent cyclic method of testing (Fed-batch Cycle Test Method) measured power density.Respectively 2000,1000,
500, the burning voltage that a complete MFC intermittent cycle reaches maximum is recorded under 250,100 ohmages respectively.By graphite
The maximum power density of the opposing cathode electrode projected area of graphene oxide anode prepared by the olefinic oxide hydrosol is respectively
For 0.04882mW/cm2、0.04482 mW/cm2.It is illustrated in figure 4 the power density curve chart of different battery.
Above-described embodiment is the present invention preferably embodiment, but embodiments of the present invention are not by above-described embodiment
Limit, the change made under other any spirit without departing from the present invention and principle, modify, substitute, combine, simplify,
All should be the substitute mode of equivalence, within being included in protection scope of the present invention.
Claims (10)
1. utilize the device of three electrode storage biological powers, it is characterised in that include that anode chamber, electric capacity room, cathode chamber and ion are handed over
Changing film, electric capacity room is between anode chamber and cathode chamber, and anode chamber is all divided by ion exchange membrane with electric capacity room with electric capacity room, cathode chamber
Separate, anode chamber and electric capacity room, have ON-OFF control circuit between electric capacity room and cathode chamber cut-off road；Electrode in described electric capacity room
Using capacitive electrode, described capacitive electrode is to modify the making of super capacitor material on the base material electrode of pretreatment to have
The capacitive electrode of supercapacitive；Electrode in anode is that the modified biological compatibility is preferable on the base material electrode of pretreatment
Material prepare, in described anode chamber add produce electricity antibacterial and Organic substance formed microbiological fuel cell MFC anode chamber.
The device utilizing three electrode storage biological powers the most according to claim 1, it is characterised in that in described electric capacity room
Add phosphate buffer solution, keep electronic equilibrium；If the product electricity bacterium in anode chamber is pure bacterium, the phosphoric acid of pH=8 to be used in electric capacity room
Buffer is filled full；If the product electricity bacterium in anode chamber is mixed vaccine, in electric capacity room, the phosphate buffer of pH=7 to be used is filled full.
The device utilizing three electrode storage biological powers the most according to claim 1, it is characterised in that in described cathode chamber
The catholyte added is that concentration is the potassium ferricyanide aqueous solution of 50-100mmol/L or is passed through the aqueous solution of air；Described pretreatment
Referring to be placed in by base material electrode in the hydrogen peroxide solution that mass fraction is 10wt%, at 90 DEG C, water-bath is boiled 2 hours, then spends
Ionized water water-bath at 90 DEG C is boiled 2 hours, then uses oven for drying.
The device utilizing three electrode storage biological powers the most according to claim 1, it is characterised in that described pretreatment
The method modifying super capacitor material on base material electrode includes Electrochemical Modification, chemical deposition, physical bond method or freezing dry
Dry method；Wherein Electrochemical Modification includes constant potential plating, constant voltage plating, cyclic voltammetry plating, and chemical deposition is colloidal sol
Gel method, physical bond method includes utilizing politef thermo-compression bonding or Nafion bonding.
The device utilizing three electrode storage biological powers the most according to claim 1, it is characterised in that described pretreatment
On base material electrode, the method for modified biological compatibility material includes Electrochemical Modification, chemical deposition, physical bond method or freezing
Seasoning；Wherein Electrochemical Modification includes constant potential plating, constant voltage plating, cyclic voltammetry plating, and chemical deposition is molten
Sol-gel, physical bond method includes utilizing politef thermo-compression bonding or Nafion bonding.
The device utilizing three electrode storage biological powers the most according to claim 1, it is characterised in that described base material electrode
For the material that biocompatibility is preferable, electric conductivity is strong modified through Graphene or the preferable material of the other biological compatibility, bag
Include carbon cloth, graphite felt, carbon felt, carbon paper, stainless (steel) wire, nickel foam, stainless steel brush, black lead brush, Plant fiber's brush or sponge.
The device utilizing three electrode storage biological powers the most according to claim 1, it is characterised in that described super capacitor
Material includes more than one in electric double layer capacitance electrode material and fake capacitance electrode material.
The device utilizing three electrode storage biological powers the most according to claim 5, it is characterised in that described electric double layer electricity
Hold electrode material, for utilizing the large specific surface area of material own, at the material of electrode electrolyte interface stored charge, including activity
Carbon, mesoporous carbon, Graphene and oxide thereof or CNT；Described eagle capacitance electrode material, for relying on material itself the highest
Spend reversible faraday and react the material realizing storage electricity, including ruthenic oxide, manganese dioxide, iron oxides, polypyrrole, polyphenyl
Amine, polyacetylene, polyvinyl alcohol or poly-polyphenol.
The device utilizing three electrode storage biological powers the most according to claim 1, it is characterised in that described product electricity antibacterial
Including have electricity generation ability Shewanella, more than one in bacillus and escherichia coli, described Organic substance includes lactic acid, second
Acid, glucose, citric acid, reality can more than one in biochemical waste water and their corresponding salt.
10. utilize the method that the device described in claim 1 stores biological power, it is characterised in that in anode chamber and electric capacity room
Between connect with the material of good conductivity, be connected with the material of good conductivity between electric capacity room and cathode chamber, and with switching
The connection of control circuit, the material of described good conductivity is gone to include titanium silk or iron wire；In the charging stage, switch off, anode chamber
In be attached on anode produce electricity bacterium produce electronics be delivered on the capacitance electrode in electric capacity room store by external circuit；
In discharge regime, switch connection, the electronics stored on the capacitance electrode of full electricity is quickly delivered on cathode electrode by external circuit,
Electron acceptor in negative electrode obtains electronics, thus realizes the raising of the power density of battery output.
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| CN108339846A (en) * | 2018-01-18 | 2018-07-31 | 青岛科技大学 | Fuel cell handles the system and method that organic wastewater synchronizes repairing heavy metal in soil |
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