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A kind of preparation method of biomass alkaline fuel cell anode

A fuel cell, biomass technology, applied in battery electrodes, circuits, electrical components, etc., can solve the problems of low energy density, low electrode reuse rate, low anode catalyst utilization, etc., and achieve high surface area/volume ratio, high The effect of electrocatalytic oxidation of glucose activity and anode performance improvement

Inactive Publication Date: 2020-04-07
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention aims to solve the common problems of low electrode reutilization rate, low energy density, and low utilization of anode catalysts in the anodes of biomass fuel cells in the prior art, and proposes a preparation method for biomass alkaline fuel cell anodes, Not only improve the conductivity and catalyst activity of the anode, but also improve the recycling rate of the anode material

Method used

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  • A kind of preparation method of biomass alkaline fuel cell anode
  • A kind of preparation method of biomass alkaline fuel cell anode

Examples

Experimental program
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Effect test

Embodiment 1

[0028] (1) Cut out a circular foamed nickel mesh with a diameter of 3.5 cm, put the cut foamed nickel mesh into acetone solution (analytical pure), absolute ethanol (analytical pure) and distilled water for ultrasonic cleaning for 15 minutes, and then put it into 60 ℃ oven dry 2h, set aside.

[0029] (2) Prepare the electrolyte for electrodeposition, which is NiSO 4 10mM, CuSO 4 20mM, CoSO 4 5mM and nicotinamide 1mM mixed solution, use dilute sulfuric acid to adjust the pH of the electrodeposition solution to 4;

[0030] Put the foamed nickel mesh vertically into the electrodeposition cell as the working electrode, the platinum electrode as the counter electrode, and the calomel electrode as the reference electrode; add electrolyte to the electrodeposition cell until the foamed nickel mesh is completely submerged, the deposition voltage is 1V, and the foam Deposit on one side of the nickel mesh for 600s, replace the electrolyte and deposit the other side of the foamed ni...

Embodiment 2

[0038] (1) Cut out a circular foamed nickel mesh with a diameter of 3.5 cm, put the cut foamed nickel mesh into acetone solution (analytical pure), absolute ethanol (analytical pure) and distilled water for ultrasonic cleaning for 15 minutes, and then put it into 60 ℃ oven dry 2h, set aside.

[0039] (2) Prepare the electrolyte for electrodeposition, which is NiSO 4 10mM, CuSO 4 20mM, CoSO 4 5mM and nicotinamide 1mM mixed solution, use dilute sulfuric acid to adjust the pH of the electrodeposition solution to 4;

[0040] Put the foamed nickel mesh vertically into the electrodeposition cell as the working electrode, the platinum electrode as the counter electrode, and the calomel electrode as the reference electrode; add electrolyte to the electrodeposition cell until the foamed nickel mesh is completely submerged, the deposition voltage is 3V, and the foam Deposit on one side of the nickel mesh for 500s, replace the electrolyte and deposit the other side of the foamed ni...

Embodiment 3

[0048] (1) Cut out a circular foamed nickel mesh with a diameter of 3.5 cm, put the cut foamed nickel mesh into acetone solution (analytical pure), absolute ethanol (analytical pure) and distilled water for ultrasonic cleaning for 15 minutes, and then put it into 60 ℃ oven dry 2h, set aside.

[0049] (2) Prepare the electrolyte for electrodeposition, which is NiSO 4 10mM, CuSO 4 20mM, CoSO 4 5mM and nicotinamide 1mM mixed solution, use dilute sulfuric acid to adjust the pH of the electrodeposition solution to 4;

[0050] Put the foamed nickel mesh vertically into the electrodeposition cell as the working electrode, the platinum electrode as the counter electrode, and the calomel electrode as the reference electrode; add electrolyte to the electrodeposition cell until the foamed nickel mesh is completely submerged, the deposition voltage is 5V, and the foam Deposit on one side of the nickel mesh for 800s, replace the electrolyte and deposit the other side of the foamed ni...

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Abstract

The invention belongs to the technical field of a fuel cell, and discloses a preparation method of a biomass alkaline fuel cell positive electrode. The preparation method comprises the steps of performing pretreatment on foamed nickel, and next, adopting an electrodeposition method to obtain deposited NiCo<2>O<4>-CuO composite metal oxide foamed nickel; performing drying and firing to obtain nanometer NiCo<2>O<4>-CuO-modified foamed nickel; and performing mixing on active carbon powder and absolute ethyl alcohol, dropwise adding polytetrafluoroethylene emulsion, and performing water bath heating to obtain a plasticine-shaped material, and performing uniform kneading on the plasticine-shaped material, and then paving the material on the two sides of the foamed nickel and performing rollinguntil the thickness is 5-8mm. By virtue of compounding of NiCo<2>O<4> and CuO, catalytic performance can be improved, and by virtue of added nicotinamide, more catalysis glucose oxidization sites andhigher conductivity are achieved; by adoption of the electrodeposition method, firmer combination and higher repeatability can be ensured, and electron transfer can be easier; and by virtue of the rolled active carbon, a protection effect is played, and the problem of low repetition utilization rate is solved.

Description

technical field [0001] The invention belongs to the technical field of fuel cells, and in particular relates to a method of using foamed nickel with a three-dimensional network structure as a collector, nicotinamide as a carbon source, PTFE as a binder, and NiCo modified on foamed nickel. 2 o 4 -CuO composite nanomaterial used as a catalyst for the preparation of an anode material for a biomass alkaline fuel cell. Background technique [0002] The energy crisis and environmental degradation have become two major obstacles to the sustainable development of human society, so the demand for new energy development is becoming more and more intense. Fuel cells have the advantages of high energy density, long service life, low pollution, and continuous operation, so they are considered to be one of the main alternative energy sources for future portable electronic products. At this stage, fuel cell technology is facing a series of problems such as high cost, low production capac...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/88H01M4/90
CPCH01M4/8853H01M4/8896H01M4/9016Y02E60/50
Inventor 刘宪华董丰李胜玲
Owner TIANJIN UNIV
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