CN110364746A - Anode of microbial fuel cell electrode material preparation method, anode of microbial fuel cell electrode slice and microbiological fuel cell - Google Patents
Anode of microbial fuel cell electrode material preparation method, anode of microbial fuel cell electrode slice and microbiological fuel cell Download PDFInfo
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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
- H01M4/00—Electrodes
- H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
- H01M4/8647—Inert electrodes with catalytic activity, e.g. for fuel cells consisting of more than one material, e.g. consisting of composites
- H01M4/8652—Inert electrodes with catalytic activity, e.g. for fuel cells consisting of more than one material, e.g. consisting of composites as mixture
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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
- H01M4/00—Electrodes
- H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
- H01M4/90—Selection of catalytic material
- H01M4/9008—Organic or organo-metallic compounds
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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
- H01M4/00—Electrodes
- H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
- H01M4/90—Selection of catalytic material
- H01M4/9091—Unsupported catalytic particles; loose particulate catalytic materials, e.g. in fluidised state
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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
- H01M4/00—Electrodes
- H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
- H01M4/96—Carbon-based electrodes
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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
- 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
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
The present invention relates to technical field of microbial fuel battery, and in particular to the anode electrode film and microbiological fuel cell of a kind of preparation method of anode of microbial fuel cell electrode material, microbiological fuel cell.The preparation method of battery anode material is the following steps are included: the raw material including PDDA, sodium chloride and graphene are blended, wherein, based on the mass percent of raw material, the additive amount of PDDA accounts for the 4.5wt%-6.5wt% of raw material gross mass, and the additive amount of sodium chloride and the ratio of graphene additive amount are 2:1.The preparation of graphene composite material can be realized by being simply blended by the present invention, preparation method is simple and convenient, it is easy to operate, and it obtains graphene composite material and applies in microbiological fuel cell, it can guarantee that it can have biggish output power density and current density, meanwhile preparation method provided by the invention can be applied to the mass production of PDDA- graphene composite material, to be conducive to popularization and application of the graphene in microbiological fuel cell.
Description
Technical field
The present invention relates to technical field of microbial fuel battery, and in particular to a kind of anode of microbial fuel cell electrode material
Preparation method for material, anode of microbial fuel cell electrode slice and microbiological fuel cell.
Background technique
With the increasingly reduction of traditional fossil energy, problem of energy crisis has become the popular words of whole world concern now
Topic, the New Green Energy source technology of Sustainable Development are imperative.
Microbiological fuel cell (Microbial Fuel Cells, MFCs) be one kind can using in nature it is cheap easily
The microorganism obtained is catalyzed the new energy technology that organic matter fuel is aoxidized and produced electricl energy as biocatalyst, at waste water
The fields such as reason, biosensor, Medical Devices all have huge potential using value.The basic functional principle of MFCs is: having
Machine object releases proton and electronics by active microorganism oxygenolysis in the anode chamber of anaerobism as fuel, wherein electronics is logical
It crosses electron medium or is directly delivered on anode, then the electron acceptor by eventually arriving at cathode containing loaded external circuit
On, and proton then passes through proton exchange membrane is transferred to cathode, electronics and proton and reacts under the action of cathode electronics receptor,
Electric current is generated to form closed circuit.The factor that will cause influence to MFCs performance mainly has: battery configuration, active microorganism
Type, proton exchange membrane type, anode material type, the type of cathode electronics receptor etc., wherein the anode material of MFCs is made
For the attachment place of active microorganism, electronics should can promptly can be obtained from active microbial catalysts, and is needed
With good biocompatibility and big active area to be conducive to a large amount of attachments of active microorganism, it is also necessary to have good
Electronic conductivity so as to rapidly by electron transmission to cathode electronics receptor, so the performance of anode material for
The power output of MFCs plays conclusive effect.
Graphene is as a kind of two-dimentional carbon material, since its good electric conductivity and biocompatibility are led in MFCs in recent years
Domain is by extensive concern, but grapheme material is since the effect of interlayer Van der Waals force is readily formed secondary stacking, therefore currently,
When preparing the anode electrode film of microbiological fuel cell using graphene, it usually all can be first former using solvent-thermal method or electrochemistry
The methods of position removing is modified graphene to prepare graphene composite material, then again that the graphene prepared is compound
Material covering is on the electrode substrate to form anode electrode film, but due to hydro-thermal method and the relatively complicated complexity of stripping method in situ,
Therefore it is unfavorable for popularization and application of the grapheme material in microbiological fuel cell.
Summary of the invention
Therefore, the technical problem to be solved in the present invention is that overcoming graphene composite material preparation method in the prior art
Very complicated is unfavorable for popularization and application of the grapheme material in microbiological fuel cell, to provide a kind of Microbial fuel
Cell anode electrodes material preparation method, anode of microbial fuel cell electrode slice and microbiological fuel cell.
In order to solve the above technical problems, the technical solution adopted by the present invention are as follows:
A kind of preparation method of anode of microbial fuel cell material, comprising the following steps:
Raw material including PDDA, sodium chloride and graphene are blended, wherein by the mass percent of raw material
Meter, the additive amount of the PDDA account for the 4.5wt%-6.5wt% of raw material gross mass, the additive amount of the sodium chloride and the stone
The ratio of black alkene additive amount is 2:1.
Further, the additive amount of the PDDA accounts for the 5wt% of raw material gross mass.
Further, the molecular weight of the PDDA is 400000-500000, and mass fraction in water is 20wt%.
Further, it is described be blended the following steps are included:
First PDDA is dissolved in deionized water and stirs 10-15min, graphene is added with sodium chloride and carries out ultrasonic be blended
30-45min, ultrasound are blended to be centrifuged after terminating and remove upper layer turbid solution, and it is multiple to obtain graphene after suction filtration, washing, drying
Condensation material.
A kind of anode electrode film of microbiological fuel cell, comprising:
Electrode base board；
And coated in the battery anode material on the electrode base board, the battery anode material is according to above-mentioned institute
There is preparation method described in any scheme in scheme to be prepared.
Further, the electrode base board is at least one of carbon paper, carbon cloth and carbon felt.
A kind of microbiological fuel cell, including the anode electrode film as described in any scheme in above-mentioned all schemes.
Technical solution of the present invention has the advantages that
1. the preparation method of anode of microbial fuel cell electrode material provided by the invention, since PDDA is polycation
Electrolyte, in the blending process, PDDA can ionize and be inserted into graphene film interlayer to carry out to graphene
Functionalization, and sodium chloride can influence the configuration of polymeric chain in solution, counter ion part can be with the positive electricity of shielded segment PDDA
Lotus so that PDDA can be easier to be unfolded, and can permit PDDA chain and take random configuration, so as to promote PDDA
It is inserted between graphene sheet layer, PDDA can be promoted to the functionalization of graphene by the addition of sodium chloride, the present invention passes through
The raw material including PDDA, sodium chloride and graphene for carrying out compatibility by a certain percentage are carried out being blended that sun is prepared
Pole electrode material can expose more active site on obtained PDDA- graphene composite material, so that working as
PDDA- graphene composite material can make anode electrode material have biggish when being applied to microbiological fuel cell
Active area and preferable biocompatibility and good electronic conductivity, to can guarantee the microbiological fuel cell of acquisition
With biggish output power density and current density, and the present invention can be realized PDDA- graphene by simply blending and answer
The preparation of condensation material, preparation method is simple and convenient, easy to operate, meanwhile, it compares with solvent-thermal method in the prior art, this hair
The preparation method of bright offer not will receive the limitation of the Preparation equipments such as reaction kettle, and raw material of the present invention are cheap easy
, therefore preparation method provided by the invention can be applied to the mass production of PDDA- graphene composite material, to be conducive to
Popularization and application of the PDDA- graphene composite material in microbiological fuel cell.
2. preparation method provided by the invention, when being blended, first PDDA is placed in deionized water first when stirring one section
Between put into sodium chloride and graphene again and carry out ultrasonic blending, in this way, enable PDDA first in deionized water enough
Dispersion, so that PDDA more easily can be inserted into graphene from each different position when subsequent graphene is added
Piece interlayer, to promote PDDA to the functionalization of graphene.
3. the anode electrode film of microbiological fuel cell provided by the invention, by that will have the anode of more active site
Electrode material is applied in anode electrode film, so that anode electrode film can have biggish active area and preferable life
Object compatibility and good electronic conductivity, to be conducive to the attachment of active microorganism and the transmitting of electronics.
4. microbiological fuel cell provided by the invention has biggish active area and preferable biofacies by selecting
The anode electrode film of capacitive and good electronic conductivity, so that the microbiological fuel cell obtained is with higher defeated
Power density and current density out.
Detailed description of the invention
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art be briefly described, it should be apparent that, it is described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, is also possible to obtain other drawings based on these drawings.
Fig. 1 is the process flow chart of the preparation method in the embodiment of the present invention 1；
Fig. 2 is the SEM electron microscope of electrode anode material obtained in the embodiment of the present invention 1.
Specific embodiment
There is provided following embodiments is to preferably further understand the present invention, it is not limited to the best embodiment party
Formula is not construed as limiting the contents of the present invention and protection scope, anyone under the inspiration of the present invention or by the present invention and its
The feature of his prior art is combined and any and identical or similar product of the present invention for obtaining, all falls within of the invention
Within protection scope.
Specific experiment step or condition person are not specified in embodiment, according to the literature in the art described routine experiment
The operation of step or condition can carry out.Reagents or instruments used without specified manufacturer, being can be by commercially available acquisition
Conventional reagent product.
Embodiment 1
The present embodiment is related to a kind of preparation method of anode of microbial fuel cell electrode material, specifically includes following step
It is rapid:
The PDDA for weighing 200mg is dissolved in deionized water, strong stirring 10min, wherein the molecular weight of PDDA is
400000-500000, mass fraction in water is 20wt%, and 400mg solid sodium chloride powder and 200mg graphite is then added
Alkene powder, after ultrasonic half an hour, centrifugation removes upper layer turbid solution, filters, washs three times, is then dried in vacuo at 80 DEG C
12h。
Embodiment 2
The present embodiment is related to a kind of microbiological fuel cell, including shell, proton exchange membrane, anode electrode film and cathode
Electrode slice.
Wherein, proton exchange membrane selects 212 film of Nafion, and proton exchange membrane is used to shell being divided into anode chamber and yin
Pole room is loaded with anodic dissolution in anode chamber, and it includes electrode base board and painting that cathode chamber, which is loaded with cathode solution anode electrode film,
PDDA- graphene composite material on the electrode substrate is covered, cathode electrode sheet is carbon paper electrode.In the present embodiment, anode chamber
Volume with cathode chamber is 100mL.
Specifically, proton exchange membrane needs to be pre-processed according to the following steps before use: by 212 proton exchange of Nafion
Film is cut into the circle of suitable MFCs size, throws off surface plastic materials film, then by 212 proton exchange membrane of Nafion at 90 DEG C
Under successively handle 1 respectively in the hydrogenperoxide steam generator of 3.0wt%, deionized water, the sulfuric acid solution of 0.5M and deionized water
Hour, it impregnates later spare in deionized water.
Anodic dissolution includes: containing containing the culture solutions of Escherichia coli, 50mL in logarithmic phase growth for 20mL
The culture medium of the PBS solution of -1,4 naphthoquinones of 2- hydroxyl of 10.0g/L glucose, 5.0g/L yeast extract and 5mM.Wherein, PBS
Solution includes the NaHCO of 10.0g/L3With the NaH of 11.05g/L2PO4·2H2O, pH value are about 7.0.Anodic dissolution 70mL in total.
Cathode solution is the K for including 50mM3[Fe(CN)6] and 0.1M KCl PBS solution.Cathode solution 70mL in total.
Anode electrode film is prepared in accordance with the following methods: will be dissolved in solvent and be dripped by PDDA- graphene composite material
It applies on the electrode substrate.
Wherein, PDDA- graphene composite material is the blended system of raw material that will include PDDA, sodium chloride and graphene
Standby to obtain, the PDDA- graphene composite material to make has preferable functionality, in raw material, by mass percentage
Meter, the additive amount of PDDA account for the 4.5wt%-6.5wt% of raw material gross mass, preferably 5wt%, and the additive amount of sodium chloride is stone
2 times of black alkene additive amount, the molecular weight of PDDA are 400000-500000, and mass fraction in water is 20wt%.To make
PDDA preferably can carry out functionalization to graphene can first be dissolved in PDDA when preparing graphene composite material
10-15min is stirred in ionized water, adds graphene with sodium chloride progress ultrasound and 30-45min is blended, after ultrasound is blended
It is centrifuged and is removed upper layer turbid solution, obtain graphene composite material after suction filtration, washing, drying.In this way, can make
The dispersion degree of PDDA in deionized water improves, to be conducive to the piece interlayer that PDDA is inserted into graphene.
0.1wt%-0.3wt%Nafion- ethanol solution can be selected in solvent.Carbon paper, carbon cloth or carbon can be selected in electrode base board
At least one of felt.
In the present embodiment, anode electrode film is prepared in accordance with the following methods: the PDDA for weighing 200mg first is dissolved in
In ionized water, strong stirring 10min, wherein the molecular weight of PDDA is 400000-500000, and mass fraction in water is
400mg solid sodium chloride powder and 200mg graphene powder is then added in 20wt%, after ultrasonic half an hour, is centrifuged upper layer is muddy
Turbid removal is filtered, is washed three times, is then dried in vacuo 12h at 80 DEG C, obtains PDDA- graphene composite material.Then claim
PDDA- graphene composite material after taking 5mg dry, is added in the 0.2wt%Nafion- ethanol solution prepared in advance to 1mL,
Ultrasound forms uniform suspension in 30 minutes, finally by suspended drop-coated to carbon paper electrode surface.
Wherein, electrode base board is commercially available or is made according to the following steps: carbon paper being cut into 1.5 × 1.2 and 2.0 in advance
× 2.0 fritter, successively by impregnating 1 hour in the HCl of 1.0M, deionized water, the KOH of 1.0M, deionized water respectively, later
It is cleaned 3 times with deionized water, then is taken out after 60 DEG C are dried in vacuo 8 hours, penetrate copper wire on carbon paper fritter after the pre-treatment
And the coupling part of carbon paper and copper wire is covered with AB glue.
Microbiological fuel cell provided in this embodiment output power density with higher and current density.
Embodiment 3
The present embodiment is related to a kind of microbiological fuel cell, is in place of the present embodiment and the difference of embodiment 2: this implementation
Example Anodic electrode slice is prepared in accordance with the following methods:
S1, graphene composite material preparation: the PDDA for weighing 174.2mg is dissolved in deionized water, strong stirring 10min,
Wherein, the molecular weight of PDDA is 400000-500000, and mass fraction in water is 20wt%, and 400mg sodium chloride is then added
Solid powder and 200mg graphene powder, after ultrasonic half an hour, centrifugation removes upper layer turbid solution, filters, washs three times, so
12h is dried in vacuo at 80 DEG C afterwards.
The preparation of S2, anode electrode film: the graphene composite material 5mg after taking vacuum drying is added what 1ml was prepared in advance
0.2wt%Nafion- ethanol solution, ultrasound form uniform suspension, drop coating to carbon paper electrode surface for 30 minutes.
Embodiment 4
The present embodiment is related to a kind of microbiological fuel cell, is in place of the present embodiment and the difference of embodiment 2: this implementation
Example Anodic electrode slice is prepared in accordance with the following methods:
S1, graphene composite material preparation: the PDDA for weighing 288.9mg is dissolved in deionized water, strong stirring 10min,
Wherein, the molecular weight of PDDA is 400000-500000, and mass fraction in water is 20wt%, and 400mg sodium chloride is then added
Solid powder and 200mg graphene powder, after ultrasonic half an hour, centrifugation removes upper layer turbid solution, filters, washs three times, so
12h is dried in vacuo at 80 DEG C afterwards.
The preparation of S2, anode electrode film: the graphene composite material 5mg after taking vacuum drying is added what 1ml was prepared in advance
0.2wt%Nafion- ethanol solution, ultrasound form uniform suspension, drop coating to carbon paper electrode surface for 30 minutes.
Comparative example 1
The present embodiment is related to a kind of microbiological fuel cell, is in place of the present embodiment and the difference of embodiment 2, this implementation
In example, anode electrode film is prepared in accordance with the following methods:
S1, graphene composite material preparation: the PDDA for weighing 200mg is dissolved in deionized water, strong stirring 10min,
In, the molecular weight of PDDA is 400000-500000, and mass fraction in water is 20wt%, and 200mg Graphene powder is then added
End, after ultrasonic half an hour, centrifugation removes upper layer turbid solution, filters, washs three times, is then dried in vacuo 12h at 80 DEG C.
The preparation of S2, anode electrode film: the graphene composite material 5mg after taking vacuum drying is added what 1ml was prepared in advance
0.2wt%Nafion- ethanol solution, ultrasound form uniform suspension, drop coating to carbon paper electrode surface for 30 minutes.
Comparative example 2
The present embodiment is related to a kind of microbiological fuel cell, is in place of the present embodiment and the difference of embodiment 2, this implementation
In example, anode electrode film is prepared in accordance with the following methods:
S1, graphene composite material preparation: the PDDA for weighing 400mg is dissolved in deionized water, strong stirring 10min,
In, the molecular weight of PDDA is 400000-500000, and mass fraction in water is 20wt%, and it is solid that 400mg sodium chloride is then added
Body powder and 200mg graphene powder, after ultrasonic half an hour, centrifugation removes upper layer turbid solution, filters, washs three times, then
12h is dried in vacuo at 80 DEG C.
The preparation of S2, anode electrode film: the graphene composite material 5mg after taking vacuum drying is added what 1ml was prepared in advance
0.2wt%Nafion- ethanol solution, ultrasound form uniform suspension, drop coating to carbon paper electrode surface for 30 minutes.
Comparative example 3
This comparative example is related to a kind of microbiological fuel cell, and the microbiological fuel cell in this comparative example is refined according to Songrong
Equal graphene/ferriferrous oxide nano composite material is used as grinding for anode enhancing microbiological fuel cell service life and electric current output
Study carefully .CHEM-ASIAN.J.2017, prepared by the preparation method provided in 12,308-313.
Wherein anode electrode film preparation specifically includes the following steps:
The preparation of S1, MFCs anode electrode material: it weighs 40mg ferric trichloride and is dissolved in 40mL graphene oxide and ethylene glycol
In mixed solution, 1.52g sodium acetate is then added, obtained solution is transferred in autoclave by strong stirring 2h, and 200 DEG C
Lower reaction for 24 hours, is finally cooled to room temperature, washs, and is dried in vacuo 12h at 50 DEG C.
The preparation of S2, anode electrode film: the composite material after taking vacuum drying is mixed with 5% polytetrafluoroethylsolution solution
(1mg L-1), drop coating is on carbon paper electrode substrate, 37 DEG C of dryings.
Comparative example 4
This comparative example is related to a kind of microbiological fuel cell, and the microbiological fuel cell in this comparative example is according to Tang Jiahuan
Equal graphite surface fabricated in situ graphene sheet layer is used as the anode .Biosensors and of microbiological fuel cell
It is prepared by the preparation method provided in Bioelectronics.2015.71,387-395.
Wherein, anode electrode film preparation specifically includes the following steps:
The preparation of S1, MFCs anode electrode material: graphite plate is cut into fritter, is then soaked respectively in 1M hydrochloric acid solution, goes
Ionized water, 1M sodium hydroxide, each 1 hour in deionized water, graphite plate carries out electrochemical stripping in two electrode systems later,
Platinum guaze is used as to electrode, and graphite plate is as working electrode, and 0.1M ammonium sulfate is as electrolyte, and voltage is 10 volts, removing 40
Minute.The graphene of removing passes through vacuum filter and washs repeatedly to be collected from electrolyte
The preparation of S2, anode electrode film: the Graphene electrodes removed in situ are as anode electrode film.
Test example
Output power and current density are carried out to the microbiological fuel cell that embodiment 2-4 and comparative example 1-2 is provided
Detection, detecting step are as follows: logical N2Galvanic anode room is sealed after 50min, the resistance composition of 1000 ohm of external circuit series connection is closed
Circuit is closed, MFCs is placed in 37 DEG C of water bath with thermostatic control, and will be during both ends access voltage testing system acquisition battery operation
Rotating resistance box is accessed external circuit after voltage reaches maximum value by the voltage at external resistance both ends, then different by transformation
The value of external resistance carrys out recording voltage value, the output power of MFCs is calculated by formula P=U2/R, corresponding electric current output is U/R.
Testing result is as shown in table 1.
The test method and maximum power density for comparing the microbiological fuel cell that 3-4 is provided are then respectively by preparation method
Corresponding bibliography provides.Corresponding test result is shown in Table 2.
The test result of each embodiment of table 1. and comparative example
| Group | Maximum power density (mWm-2) | Corresponding current density (mAm-2) |
| Embodiment 2 | 5029.3 | 11822.6 |
| Embodiment 3 | 4227.1 | 10838.8 |
| Embodiment 4 | 4446.7 | 11116.7 |
| Comparative example 1 | 2321.2 | 8031.8 |
| Comparative example 2 | 2681.12 | 8632.1 |
The test result of microbiological fuel cell in 2. comparative example 3-4 of table
| Group | Maximum power density (mWm-2) |
| Comparative example 3 | 891 |
| Comparative example 4 | 530 |
Obviously, the above embodiments are merely examples for clarifying the description, and does not limit the embodiments.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of variation or
It changes.There is no necessity and possibility to exhaust all the enbodiments.And it is extended from this it is obvious variation or
It changes still within the protection scope of the invention.
Claims (7)
1. a kind of preparation method of anode of microbial fuel cell material, which comprises the following steps:
Raw material including PDDA, sodium chloride and graphene are blended, wherein based on the mass percent of raw material,
The additive amount of the PDDA accounts for the 4.5wt%-6.5wt% of raw material gross mass, the additive amount of the sodium chloride and the graphite
The ratio of alkene additive amount is 2:1.
2. preparation method according to claim 1, which is characterized in that the additive amount of the PDDA accounts for raw material gross mass
5wt%.
3. preparation method according to any one of claim 1 or 2, which is characterized in that the molecular weight of the PDDA is
400000-500000, mass fraction in water is 20wt%.
4. preparation method according to any one of claim 1-3, which is characterized in that it is described be blended the following steps are included:
First PDDA is dissolved in deionized water and stirs 10-15min, graphene is added with sodium chloride progress ultrasound and 30- is blended
45min, ultrasound are blended to be centrifuged after terminating and remove upper layer turbid solution, obtain graphene composite wood after suction filtration, washing, drying
Material.
5. a kind of anode electrode film of microbiological fuel cell characterized by comprising
Electrode base board；
And coated in the battery anode material on the electrode base board, the battery anode material is according to claim 1-4
Any one of described in preparation method be prepared.
6. anode electrode film according to claim 5, which is characterized in that the electrode base board is carbon paper, carbon cloth and carbon felt
At least one of.
7. a kind of microbiological fuel cell, which is characterized in that including the anode electrode as described in any one of claim 5-6
Piece.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111029633A (en) * | 2019-11-15 | 2020-04-17 | 广东轻工职业技术学院 | Microbial fuel cell and preparation method and application thereof |
| CN111269528A (en) * | 2020-01-22 | 2020-06-12 | 青岛德通纳米技术有限公司 | Preparation method of light high-strength graphene carbon fiber reinforced composite material |
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| CN111029633B (en) * | 2019-11-15 | 2023-03-28 | 广东轻工职业技术学院 | Microbial fuel cell and preparation method and application thereof |
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