CN105355954B - A kind of direct oxidation glucose biological fuel cell and preparation method thereof - Google Patents
A kind of direct oxidation glucose biological fuel cell and preparation method thereof Download PDFInfo
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- CN105355954B CN105355954B CN201510926190.4A CN201510926190A CN105355954B CN 105355954 B CN105355954 B CN 105355954B CN 201510926190 A CN201510926190 A CN 201510926190A CN 105355954 B CN105355954 B CN 105355954B
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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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- 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
- H01M4/9041—Metals or alloys
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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
Abstract
The invention discloses a kind of direct oxidation glucose biological fuel cell and preparation method thereof, the biological fuel cell includes the external circuit of the negative electrode in anode and cathode chamber in anode chamber, cathode chamber, the barrier film for separating anode chamber and cathode chamber and the connection anode chamber, fuel in the anode chamber is glucose, fuel in the cathode chamber is oxygen, and the anode and negative electrode are the nickel screen or copper net electrode for being loaded with nano silver particles；The preparation method includes preparing electrode, prepare electrolyte and assembling the steps such as biological fuel cell.The direct oxidation glucose biological fuel cell of the present invention is using the nickel screen or copper net electrode of loading nano silvery particle as anode and negative electrode, the power density of battery is effectively increased, and also assures that stability of the biological fuel cell under the conditions of condition of different temperatures, different loads；Also, the preparation method of the biological fuel cell is more simple, and cost is not high, is easy to be extended and applied.
Description
Technical field
The present invention relates to the technical field of biological fuel cell, more particularly, is related to a kind of direct oxidation glucose life
Thing fuel cell and preparation method thereof.
Background technology
With the lasting in short supply and getting worse of environmental crisis of the future world energy, develop and pollution is not formed to environment
To substitute oil, coal etc., main fuel seems more and more important to novel renewable energy now.Energy driving is obtained from environment
Electronic equipment, all it is the dream of the whole mankind all the time, glucose biological fuel cell is as one in novel renewable energy
Kind, electric energy can be converted under the catalysis of microorganism or enzyme, energy conversion efficiency is high；Can have under remote, low temperature environment
Effect operation, environmental suitability are strong；Electricity generation process is green, at most only produces CO2, and CO2Burst size be less than other energy shapes
The average level of formula.Due to the peculiar advantage of glucose biological fuel cell, it is set to have in alternative energy source, wastewater treatment etc.
There is huge applications prospect, then as current one big study hotspot.
But while increasing scholar participates in the research field, glucose biological fuel cell develops in itself
Bottleneck is faced with, its bottleneck is mainly manifested in two aspects：Most of glucose biological fuel cell output power is still relatively low
It is and unstable；Most of system, which needs to add electron transmission intermediate, could improve electricity generation ability, but electron transmission intermediate
It is expensive and poisonous, it is not suitable with growth requirement.In addition, using microorganism or enzyme as catalyst, although wide material sources, cost
It is cheap, but their limited activity, run time is shorter, such as life span of the enzyme in acetate buffer solution is only 8 hours
By 2 days.Chinese patent application CN102569861A discloses a kind of enzyme thermistor devices, using phenols PEM, and
Using graphene-nano-Au composite load laccase and glucose oxidase as the catalyst at negative and positive the two poles of the earth, although one
Determine to improve the cycle of operation of battery in degree, but its power output is still relatively low.Enzyme thermistor devices represent a kind of emerging
Energy mode, but it still suffers from many problems and needs to solve, such as low open-circuit voltage, low power output and the short time
Operation stability.
Recently, it is gradual because of its preferable performance using the glucose biological fuel cell of basic media and metallic catalyst
Attract attention, therefore develop basic media and metallic catalyst instead of enzyme or microorganism as glucose biological
Catalyst and the performance more preferably glucose biological fuel cell of fuel cell have great importance.
The content of the invention
In order to solve problems of the prior art, it is an object of the invention to provide one kind to utilize basic media and metal
Catalyst replaces enzyme or microorganism larger as the catalyst and stable performance and power output of glucose biological fuel cell
Glucose biological fuel cell.
An aspect of of the present present invention provides a kind of direct oxidation glucose biological fuel cell, the biological fuel cell bag
Include in the anode and cathode chamber in anode chamber, cathode chamber, the barrier film for separating anode chamber and cathode chamber and the connection anode chamber
Negative electrode external circuit, the fuel in the anode chamber is glucose, and the fuel in the cathode chamber is oxygen, the anode and
Negative electrode is the nickel screen or copper net electrode for being loaded with nano silver particles.
According to one embodiment of direct oxidation glucose biological fuel cell of the present invention, the barrier film be PEEK Ji Yin from
Proton exchange.
According to one embodiment of direct oxidation glucose biological fuel cell of the present invention, the anode in the anode chamber is electric
Solution liquid use nitrogen saturation and concentration for 0.5~5mol/L KOH or NaOH buffer solutions, wherein containing glucose and glucose it is dense
Spend for 0.1~5mol/L.
According to one embodiment of direct oxidation glucose biological fuel cell of the present invention, the negative electrode in the cathode chamber is electric
Solution liquid uses KOH or NaOH buffer solution of the concentration for 0.5~5mol/L, wherein being passed through flow 50 containing saturation oxygen and oxygen
~1000sscm.
According to one embodiment of direct oxidation glucose biological fuel cell of the present invention, the hole of the nickel screen or copper mesh
Rate is 60~90% and aperture size is 150~250 μm.
Another aspect provides a kind of preparation method of direct oxidation glucose biological fuel cell, the system
Preparation Method comprises the following steps：
A, electrode is prepared：The nickel screen after cleaning or copper mesh are performed etching using acid solution and handles and rinses, then by nickel screen or
Copper mesh, which is inserted, carries out immersion treatment in silver nitrate solution, the nickel screen or copper net electrode of loading nano silvery particle is made, will be described negative
It is stored in after nickel screen or the copper net electrode cleaning of carrying nano silver particle standby in KOH or NaOH solution；
B, electrolyte is prepared：Prepare the anolyte containing glucose and the catholyte containing oxygen；
C, biological fuel cell is assembled：Using the nickel screen or copper net electrode of the loading nano silvery particle as anode and negative electrode
And it is respectively charged into anode chamber and cathode chamber；Installation separates the barrier film of anode chamber and cathode chamber；The sun is connected using external circuit
Pole and negative electrode；Anolyte is added into anode chamber and catholyte is added into cathode chamber, assembling obtains bio-fuel
Battery.
According to one embodiment of the preparation method of direct oxidation glucose biological fuel cell of the present invention, the acid solution is
The concentration of hydrochloric acid solution and hydrochloric acid solution is 5~10mol/L, and the time of etching processing is 15~30min；The KOH or NaOH
The concentration of solution is 1~5mol/L.
According to one embodiment of the preparation method of direct oxidation glucose biological fuel cell of the present invention, the nickel screen or
The porosity of copper mesh is more than 80% and aperture size is 150~250 μm；The concentration of the silver nitrate solution is 1~5mmol/
L, the time of immersion treatment is 30~60min.
According to one embodiment of the preparation method of direct oxidation glucose biological fuel cell of the present invention, the anode electricity
Solution liquid use nitrogen saturation and concentration for 0.5~5mol/L KOH or NaOH buffer solutions, wherein containing glucose and glucose it is dense
Spend for 0.1~5mol/L；Catholyte in the cathode chamber uses concentration to be buffered for 0.5~5mol/L KOH or NaOH
Liquid, wherein the flow that is passed through containing saturation oxygen and oxygen is 50~1000sscm.
According to one embodiment of the preparation method of direct oxidation glucose biological fuel cell of the present invention, the barrier film is
PEEK base anion-exchange membranes, and be 3~5% using mass concentration before using the PEEK bases anion-exchange membrane
KCl solution carries out immersion treatment to it.
Compared with prior art, direct oxidation glucose biological fuel cell of the invention is using loading nano silvery particle
Nickel screen or copper net electrode are as anode and negative electrode, so as to effectively increase the power density of battery, the peak power output of acquisition
Apparently higher than using the glucose biological fuel cell of enzyme or microorganism as catalyst, and it also assures that biological fuel cell
Stability under the conditions of condition of different temperatures, different loads；Also, the preparation method of the biological fuel cell is more simple
Easily, cost is not high, is easy to be extended and applied.
Brief description of the drawings
Fig. 1 shows the structural representation of direct oxidation glucose biological fuel cell according to an exemplary embodiment of the present invention
Figure.
Fig. 2A and Fig. 2 B show the stereoscan photograph of porous metals nickel screen in example 1；Fig. 2 C show in example 1 and born
The stereoscan photograph of the nickel screen electrode of carrying nano silver particle.
Fig. 3 shows the XRD spectrum of the nickel screen electrode of porous metals nickel screen and loading nano silvery particle in example 1.
Fig. 4 shows direct oxidation glucose biological fuel cell in example 2, example 3 and example 4 in anolyte
Voltage-current curve and power density-electric current when middle concentration of glucose is respectively 0.1mol/L, 0.5mol/L and 0.9mol/L
Curve.
Fig. 5 shows direct oxidation glucose biological fuel cell in example 2, example 3 and example 4 in anolyte
Open-circuit voltage and the internal resistance of cell curve when middle concentration of glucose is respectively 0.1mol/L, 0.5mol/L and 0.9mol/L.
Fig. 6 shows direct oxidation glucose biological fuel cell in example 2, example 5 and example 6 in catholyte
Voltage-current curve when middle oxygen flow is respectively 100sscm, 200sscm and 400sscm.
Fig. 7 show direct oxidation glucose biological fuel cell in example 2, example 7 and example 8 respectively 23 DEG C,
Voltage-current curve at 40 DEG C and 60 DEG C.
Description of reference numerals：
1- anode chambers, 2- cathode chambers, 3- anodes, 4- negative electrodes, 5- barrier films, 6- external circuit, 7- loads, the charging of 8- anode chambers
Pipe, 9- anode chambers discharge nozzle, 10- negative electrodes chamber feed pipe, 11- cathode chamber discharge nozzles.
Embodiment
All features disclosed in this specification, or disclosed all methods or during the step of, except mutually exclusive
Feature and/or step beyond, can combine in any way.
Any feature disclosed in this specification (including any accessory claim, summary and accompanying drawing), except non-specifically chatting
State, can alternative features equivalent by other or with similar purpose replaced.I.e., unless specifically stated otherwise, each feature
It is an example in a series of equivalent or similar characteristics.
First the structure and principle of direct oxidation glucose biological fuel cell of the present invention are described in detail below.
Fig. 1 shows the structural representation of direct oxidation glucose biological fuel cell according to an exemplary embodiment of the present invention
Figure.As shown in figure 1, according to the exemplary embodiment of the present invention, the direct oxidation glucose biological fuel cell includes anode
In anode 3 and cathode chamber 2 in room 1, cathode chamber 2, the barrier film 5 for separating anode chamber 1 and cathode chamber 2 and jointed anode room 1
The external circuit 6 of negative electrode 4.Wherein, the fuel in anode chamber 1 is glucose, and the fuel in cathode chamber 2 is oxygen.According to the present invention,
Anode 3 and negative electrode 4 are the nickel screen or copper net electrode for being loaded with nano silver particles.
Specifically, the present invention uses the nickel screen for being loaded with nano silver particles or copper net electrode as anode-catalyzed electrode and the moon
Pole catalysis electrode, respectively the glucose in catalyticing anode room lose oxygen in electronics and cathode chamber and obtain electronics, electronics is from sun
Pole 3 returns to negative electrode 4 through external circuit 6 and forms loop, realizes the chemical energy of fuel to electric transformation of energy.Wherein, loop is being connected into
When, load 7 can also be connected in external circuit 6 to test its power output.The present invention, which uses, has high-specific surface area and volume
The nickel screen or copper mesh of ratio come carry out high catalytic activity material silver load, can not only realize more preferable catalytic effect and obtain compared with
Big power output, but also the cost of fuel cell is advantageously reduced, expand application.According to being preferable to carry out for the present invention
Example, nickel screen or copper mesh are porous nickel screen or copper mesh, and the porosity of nickel screen or copper mesh is more than 60~90% and aperture size
For 150~250 μm.
Wherein, barrier film used in the present invention is preferably PEEK base anion-exchange membranes (FumasepTMFAB), PEEK bases
The advantages of anion-exchange membrane is that mechanical strength is high, chemical stability is good and cost is low, and the anion-exchange membrane can be purchased directly
Acquisition is bought, the present invention is not limited excessively its specific performance.
Preferably, anode chamber feed pipe 8 and anode chamber's discharge nozzle 9 are additionally provided with anode chamber 1 to carry out the middle-jiao yang, function of the spleen and stomach of anode chamber 1
The discharge of product after the addition and reaction of pole electrolyte and fuel, negative electrode chamber feed pipe 10 is similarly also equipped with cathode chamber 2
With cathode chamber discharge nozzle 11 to carry out the discharge of product after the addition and reaction of catholyte and fuel in cathode chamber 2.
According to the exemplary embodiment of the present invention, the anolyte used in anode chamber 1 uses nitrogen saturation and concentration
For 0.5~5mol/L KOH or NaOH buffer solutions, wherein being 0.1~5mol/L containing glucose and concentration of glucose.Cathode chamber
Catholyte in 2 uses KOH or NaOH buffer solution of the concentration for 0.5~5mol/L, wherein containing saturation oxygen and oxygen
The flow that is passed through be 50~1000sscm.Wherein, the saturation nitrogen that anolyte is passed through is to exclude the sky in anode chamber
Gas, prevent the CO in air2Reacted with KOH or NaOH.
The preparation method of direct oxidation glucose biological fuel cell of the present invention is specifically described below.
According to the exemplary embodiment of the present invention, the preparation method of the direct oxidation glucose biological fuel cell includes
Following steps.
Step A：Prepare electrode
First, the nickel screen after cleaning or copper mesh are performed etching using acid solution and handles and rinse, then nickel screen or copper mesh are put
Enter and immersion treatment is carried out in silver nitrate solution, the nickel screen or copper net electrode of loading nano silvery particle is made, by the load nanometer
It is stored in after nickel screen or the copper net electrode cleaning of silver particles standby in KOH or NaOH solution.
Ultrasonic wave cleaning preferably is carried out to nickel screen or copper mesh first with acetone, to remove as much as possible on nickel screen or copper mesh
Dirt；Acid solution is recycled to perform etching processing to nickel screen or copper mesh to form larger attaching surface on nickel screen or copper mesh
Product, beneficial to the load of nano silver particles.Wherein, the acid solution can be the concentration of hydrochloric acid solution and hydrochloric acid solution be 5~
10mol/L, the time of etching processing is preferably 15~30min.
The porosity of nickel screen or copper mesh is preferably more than 60~90% and aperture size is 150~250 μm.Silver nitrate solution
Concentration be preferably 1~5mmol/L, the time of immersion treatment is preferably 30~60min.The selection of above parameter area is more favourable
In the load that high catalytic activity material silver is effectively realized on the nickel screen or copper mesh in high-specific surface area and volume ratio, realize more preferable
Catalytic effect and obtain larger power output, reduce the cost of fuel cell and expand application.
Before biological fuel cell is assembled, preferably by the nickel screen for the loading nano silvery particle being prepared or copper mesh electricity
Pole stores standby, avoids loss of activity and failure.Wherein, the concentration of KOH or NaOH solution is preferably 1~5mol/L.
Step B：Prepare electrolyte
Prepare the anolyte containing glucose and the catholyte containing oxygen.
Fuel specifically carries out the acquisition of electronics and lost in the electrolytic solution, and electronics is transferred to electrode surface and mobile formation
Electric current, therefore electrolyte needs to ensure the suitable condition that fuel obtained and lost electronics.
According to the exemplary embodiment of the present invention, anolyte uses nitrogen saturation and concentration is 0.5~5mol/L's
KOH or NaOH buffer solutions, wherein being 0.1~5mol/L containing glucose and concentration of glucose.Catholyte in cathode chamber
KOH or NaOH buffer solution of the concentration for 0.5~5mol/L is used, wherein the flow that is passed through containing saturation oxygen and oxygen is 100
~1000sscm.
Step C：Assemble biological fuel cell
The nickel screen or copper net electrode for the loading nano silvery particle that will be prepared and store in step A as anode 3 and negative electrode 4 simultaneously
It is respectively charged into anode chamber 1 and cathode chamber 2；
Installation separates anode chamber 1 and the barrier film 5 of cathode chamber 2；
Utilize external circuit jointed anode 3 and negative electrode 4；
Anolyte is added into anode chamber 1 and catholyte is added into cathode chamber 2, assembling obtains bio-fuel
Battery.
Wherein, the major function of barrier film is to separate oxidant and reducing agent and conduct ion.The barrier film selected in the present invention
For PEEK base anion-exchange membranes (FumasepTMFAB), it is and dense using quality before using PEEK base anion-exchange membranes
The KCl solution spent for 3~5% carries out immersion treatment to remove impurity that may be present in exchange membrane to it.
After assembling biological fuel cell, by being continuously added the reactants such as fuel and constantly discharge reaction production
Thing, you can realize continuously generating and supply of electric power.Preferably, before formally generate electricity, battery operation one is preferably allowed
The section time is to obtain stable open-circuit voltage.
Direct oxidation glucose biological fuel cell of the present invention and preparation method thereof is made with reference to example further
Explanation.
Example 1：The preparation of anode and negative electrode
Cleaned 5 minutes with acetone from porous metals nickel screen disk (a diameter of 5cm) and by the porous metals nickel screen disk,
Then use 6mol/L hydrochloric acid etching processing 15 minutes, then be cleaned by ultrasonic with ultra-pure water, finally dried up with stream of nitrogen gas
It is standby.
Porous metals nickel screen after above-mentioned processing is put into immersion treatment 30min in 2mmol/L silver nitrate solution, is made
The nickel screen electrode of loading nano silvery particle.Before biological fuel cell is assembled, the loading nano silvery particle is cleaned with ultra-pure water
Nickel screen electrode, be then store in stand-by in 2mol/L potassium hydroxide solution.
Wherein, the stereoscan photograph of porous metals nickel screen as shown in Figure 2 A and 2 B, the nickel screen of loading nano silvery particle
The stereoscan photograph of electrode is as shown in Figure 2 C；XRD such as Fig. 3 of the nickel screen electrode of porous metals nickel screen and loading nano silvery particle
It is shown.It is observed that the homogeneous Nano silver grain of size is evenly dispersed in porous nickel screen by Fig. 2A, Fig. 2 B and Fig. 2 C
Surface, form the nickel screen electrode of the loading nano silvery particle of better quality；As seen from Figure 3, the XRD of nickel screen is contrasted, load is received
There is the crystal diffraction peak of more obvious silver particles in the XRD of the nickel screen of rice silver particles, show that silver particles have been coated in
Nickel screen surface.
Example 2：
Using PEEK anion-exchange membranes (FumasepTMFAB, thickness 100um) as separation anode chamber and cathode chamber
Between barrier film.Anolyte use nitrogen saturation and concentration for 0.5mol/L KOH buffer solutions, wherein glucose concentration
For 0.5mol/L；Catholyte is then 0.5mol/L KOH buffer solutions, wherein the flow containing saturation oxygen and oxygen is
100sscm。
The nickel screen electrode for the loading nano silvery particle being prepared in example 1 is respectively charged into anode as anode and negative electrode
In room and cathode chamber and with external circuit jointed anode and negative electrode, obtained directly after adding above-mentioned anolyte and catholyte
Oxidizing glucose biological fuel cell.
In the output power curve of direct oxidation glucose biological fuel cell in testing this example, battery operation is first allowed
A period of time obtains after stable open-circuit voltage and records open-circuit voltage values, then with different non-essential resistance load Ri (10 Ω-
100k Ω) anode and negative electrode of battery are connected, and the power output of battery under different loads is measured using digital multimeter.Its
In, experimental temperature is 23 DEG C.
The voltage-current curve and power density-current curve of direct oxidation glucose biological fuel cell in this example
See Fig. 4, open-circuit voltage and internal resistance of cell curve are shown in Fig. 5.In this example, the concentration of glucose is 0.5mol/L, the performance of battery
Reach optimal, power output reaches 23mW/cm2, it is 0.824V, internal resistance of cell 425mOhm that open-circuit voltage, which reaches maximum,.
Example 3：
The nickel screen electrode for the loading nano silvery particle being prepared by the use of in example 1 is as anode and negative electrode and according to showing
Example 2 assembles biological fuel cell, wherein, the concentration of the glucose in anolyte is 0.1mol/L.
The voltage-current curve and power density-current curve of direct oxidation glucose biological fuel cell in this example
See Fig. 4, open-circuit voltage and internal resistance of cell curve are shown in Fig. 5.In this example, the concentration of glucose is 0.1mol/L, and it is bent to obtain polarization
Line, power density curve and open-circuit voltage will be less than the result of example 2.
Example 4：
The nickel screen electrode for the loading nano silvery particle being prepared by the use of in example 1 is as anode and negative electrode and according to showing
Example 2 assembles biological fuel cell, wherein, the concentration of the glucose in anolyte is 0.9mol/L.
The voltage-current curve and power density-current curve of direct oxidation glucose biological fuel cell in this example
See Fig. 4, open-circuit voltage and internal resistance of cell curve are shown in Fig. 5.In this example, the concentration of glucose is 0.9mol/L, and it is bent to obtain polarization
Line, power density curve and open-circuit voltage will be less than the result of example 2.
Example 5：
The nickel screen electrode for the loading nano silvery particle being prepared by the use of in example 1 is as anode and negative electrode and according to showing
Example 2 assembles biological fuel cell, wherein, the oxygen flow in catholyte is 200sscm.
The voltage-current curve of direct oxidation glucose biological fuel cell is shown in Fig. 6 in this example.In this example, oxygen
Flow is 200sscm, and it is similar to the result of example 2 to obtain polarization curve, power density curve and open-circuit voltage.
Example 6：
The nickel screen electrode for the loading nano silvery particle being prepared by the use of in example 1 is as anode and negative electrode and according to showing
Example 2 assembles biological fuel cell, wherein, the oxygen flow in catholyte is 400sscm.
The voltage-current curve of direct oxidation glucose biological fuel cell is shown in Fig. 6 in this example.In this example, oxygen
Flow is 400sscm, and it is similar to the result of example 2 to obtain polarization curve, power density curve and open-circuit voltage.
Example 7：
The nickel screen electrode for the loading nano silvery particle being prepared by the use of in example 1 is as anode and negative electrode and according to showing
Example 2 assembles biological fuel cell, wherein, experimental temperature is set as 40 DEG C.
The voltage-current curve of direct oxidation glucose biological fuel cell is shown in Fig. 7 in this example.In this example, experiment
Temperature is set as 40 DEG C, obtains the result that polarization curve is higher than example 2.
Example 8：
The nickel screen electrode for the loading nano silvery particle being prepared by the use of in example 1 is as anode and negative electrode and according to showing
Example 2 assembles biological fuel cell, wherein, experimental temperature is set as 60 DEG C.
The voltage-current curve of direct oxidation glucose biological fuel cell is shown in Fig. 7 in this example.In this example, experiment
Temperature is set as 60 DEG C, obtains the result that polarization curve is higher than example 7.
From above-mentioned example, the grape of direct oxidation glucose biological fuel cell of the invention in anolyte
Sugared concentration is 0.5mol/L, and when the oxygen flow in catholyte is 100sscm, the open-circuit voltage of battery is 0.824V and electricity
The power density in pond reaches maximum, is 23mw.cm-2.The direct oxidation glucose biological fuel cell of the present invention has excellent
Stability.
In summary, direct oxidation glucose biological fuel cell of the invention using loading nano silvery particle nickel screen or
Copper net electrode is as anode and negative electrode, and so as to effectively increase the power density of battery, the peak power output of acquisition is substantially high
In using the glucose biological fuel cell of enzyme or microorganism as catalyst, and it also assures that biological fuel cell in difference
Stability under the conditions of temperature conditionss, different loads；Also, the preparation method of the biological fuel cell is more simple, cost
It is not high, it is easy to be extended and applied.
The invention is not limited in foregoing embodiment.The present invention, which expands to, any in this manual to be disclosed
New feature or any new combination, and disclose any new method or process the step of or any new combination.
Claims (7)
1. a kind of direct oxidation glucose biological fuel cell, it is characterised in that the biological fuel cell includes anode chamber, the moon
The dispatch from foreign news agency of the negative electrode in anode and cathode chamber in pole room, the barrier film for separating anode chamber and cathode chamber and the connection anode chamber
Road, the fuel in the anode chamber are glucose, and the fuel in the cathode chamber is oxygen, and the anode and negative electrode are load
There are the nickel screen or copper net electrode of nano silver particles, the anolyte in the anode chamber uses nitrogen saturation and concentration is 0.5
~5mol/L KOH or NaOH buffer solutions, wherein being 0.1~5mol/L containing glucose and concentration of glucose；The cathode chamber
In catholyte use KOH or NaOH buffer solution of the concentration for 0.5~5mol/L, wherein containing saturation oxygen and oxygen
It is 50~1000sscm to be passed through flow.
2. direct oxidation glucose biological fuel cell according to claim 1, it is characterised in that the barrier film is PEEK
Base anion-exchange membrane.
3. direct oxidation glucose biological fuel cell according to claim 1, it is characterised in that the nickel screen or copper mesh
Porosity be 60~90% and aperture size is 150~250 μm.
4. the preparation method of direct oxidation glucose biological fuel cell, its feature exist as any one of claims 1 to 3
In the preparation method comprises the following steps：
A, electrode is prepared：The nickel screen after cleaning or copper mesh are performed etching using acid solution and handles and rinses, then by nickel screen or copper mesh
Insert and immersion treatment is carried out in silver nitrate solution, the nickel screen or copper net electrode of loading nano silvery particle is made, the load is received
It is stored in after the nickel screen of rice silver particles or copper net electrode cleaning standby in KOH or NaOH solution；
B, electrolyte is prepared：Prepare the anolyte containing glucose and the catholyte containing oxygen, the anode electricity
Solution liquid use nitrogen saturation and concentration for 0.5~5mol/L KOH or NaOH buffer solutions, wherein containing glucose and glucose it is dense
Spend for 0.1~5mol/L；Catholyte in the cathode chamber uses concentration to be buffered for 0.5~5mol/L KOH or NaOH
Liquid, wherein the flow that is passed through containing saturation oxygen and oxygen is 50~1000sscm；
C, biological fuel cell is assembled：The nickel screen of the loading nano silvery particle or copper net electrode as anode and negative electrode and are divided
It is not fitted into anode chamber and cathode chamber；Installation separates the barrier film of anode chamber and cathode chamber；Using external circuit connect the anode and
Negative electrode；Anolyte is added into anode chamber and catholyte is added into cathode chamber, assembling obtains biological fuel cell.
5. the preparation method of direct oxidation glucose biological fuel cell according to claim 4, it is characterised in that described
Acid solution is that the concentration of hydrochloric acid solution and hydrochloric acid solution is 5~10mol/L, and the time of etching processing is 15~30min；The KOH
Or the concentration of NaOH solution is 1~5mol/L.
6. the preparation method of direct oxidation glucose biological fuel cell according to claim 4, it is characterised in that described
The porosity of nickel screen or copper mesh is more than 80% and aperture size is 150~250 μm；The concentration of the silver nitrate solution be 1~
5mmol/L, the time of immersion treatment is 30~60min.
7. the preparation method of direct oxidation glucose biological fuel cell according to claim 4, it is characterised in that described
Barrier film is PEEK base anion-exchange membranes, and is 3 using mass concentration before using the PEEK bases anion-exchange membrane
~5% KCl solution carries out immersion treatment to it.
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| CN106684418A (en) * | 2017-01-17 | 2017-05-17 | 广东工业大学 | Anolyte, catholyte and biomass fuel cell |
| CN110534753B (en) * | 2019-08-22 | 2021-02-12 | 浙江大学 | Glucose fuel cell with homogeneous auxiliary catalysis |
| CN113036164B (en) * | 2019-12-24 | 2022-05-27 | 大连大学 | Preparation method and application of composite electrode based on mesoporous carbon foam |
| CN113130913B (en) * | 2019-12-31 | 2022-06-14 | 大连大学 | PtNPs/NiNPs/AgNWs/PET plastic electrode and application thereof in construction of fructose fuel cell |
| CN113846335B (en) * | 2021-08-31 | 2023-06-02 | 华南师范大学 | Method for enhancing synergistic oxidation of sodium sulfite and glucose by using platinum-modified titanium dioxide electrode or nickel oxide electrode |
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