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A flexible alcohol fuel cell based on polymer gel electrolyte membrane and its preparation method

A gel electrolyte and fuel cell technology, applied in fuel cells, circuits, electrical components, etc., can solve the problems of high cost and voltage drop, reduce cost and raw material consumption, avoid voltage drop, and store alcohols and alkalis better The effect of the capacity for sexual substances

Active Publication Date: 2021-02-02
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The electrolyte of the current alcohol fuel cell is mainly in the liquid phase. The cathode of the traditional alkaline direct alcohol fuel cell is a noble metal catalyst, which has catalytic oxidation performance for methanol, and has the problems of high cost and voltage drop.

Method used

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  • A flexible alcohol fuel cell based on polymer gel electrolyte membrane and its preparation method
  • A flexible alcohol fuel cell based on polymer gel electrolyte membrane and its preparation method

Examples

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preparation example Construction

[0039] A method for preparing a flexible alcohol fuel cell based on a polymer gel electrolyte membrane according to an embodiment of the present invention specifically includes the following steps:

[0040] 1. Cathode catalyst: Add the cathode catalyst, Nafion solution and isopropanol to the glass dish to prepare the slurry, disperse it ultrasonically, and apply it on the carbon cloth. The current collector is a metal mesh current collector;

[0041] 2. Anode catalyst: add anode catalyst, Nafion solution and isopropanol to a glass dish to prepare a slurry, disperse it ultrasonically, and apply it on the nickel foam. The current collector is a metal mesh current collector;

[0042] 3. Preparation of polymer gel electrolyte membrane:

[0043] a. Prepare a uniform and transparent polymer viscous solution: add the polymer to deionized water, and continue stirring for 60 minutes in an oil bath at a stirring speed of 100rpm to 1000rpm to form a uniform and transparent viscous soluti...

Embodiment 1

[0052] A method for preparing a flexible alcohol fuel cell based on a polymer gel electrolyte membrane according to an embodiment of the present invention is specifically completed in the following steps:

[0053] 1. Cathode catalyst: add NiCo to the glass dish 2 o 4 , Nafion solution and isopropanol to prepare a slurry, disperse it ultrasonically, and apply it on the carbon cloth, and use copper mesh as the current collector;

[0054] 2. Anode catalyst: Add PtRu, Nafion solution and isopropanol to a glass dish to prepare a slurry, disperse it ultrasonically, and apply it on the foamed nickel, and use copper mesh as the current collector;

[0055] see figure 1 3. Preparation of polymer gel electrolyte membrane: a. Prepare a uniform and transparent polyvinyl alcohol (PVA) viscous solution: add 4 g of PVA polymer to 30 mL of deionized water and use 100 rpm to 1000 rpm in an oil bath at 95 ° C. Continue to stir for 60min at a constant stirring speed to form a uniform transpare...

Embodiment 2

[0063] In the embodiment of the present invention, the cathode catalyst in step 1 is: MnO 2 ; The current collector is made of copper mesh, acoustically dispersed, ultrasonically dispersed and then applied to the nickel foam;

[0064] In step 3a, 1g of PVA polymer was added to 15mL of deionized water and stirred in an oil bath at 90°C to form a uniform and transparent viscous solution A;

[0065] In step 3b, measure 5mL ethanol solution with a graduated cylinder, transfer the ethanol solution to a beaker, weigh 3g KOH and add it to the methanol solution,

[0066] The thickness of the polymer gel electrolyte membrane is 25 μm.

[0067] Others are the same as in Example 1.

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Abstract

The invention discloses a flexible alcohol fuel battery based on a polymer gel electrolyte film and a preparation method of the fuel battery. The preparation method comprises the following steps of S1, adding a polymer to deionized water, and performing stirring to form a uniform transparent viscous solution A, wherein the polymer is polyvinyl alcohol or polyacrylamide; S2, adding an alkaline matter to an alcohol solution, and performing stirring to form a uniform transparent solution B; S3, adding the solution B to the viscous solution A, performing stirring for a reaction, and performing cooling after reaction completion to obtain a product C; and S4, performing film coating operation on the product C to obtain a film with the preset thickness to complete preparation of the polymer gel electrolyte film. The prepared flexible alcohol fuel battery adopts the polymer gel electrolyte film, and adopts a non-noble metal catalyst with no catalytic activity to alcohol oxidization as a cathode catalyst, so that the cost can be lowered; and generation of voltage drop can be avoided.

Description

technical field [0001] The invention belongs to the technical field of flexible alcohol fuel cells, in particular to a flexible alcohol fuel cell based on a polymer gel electrolyte membrane and a preparation method thereof. Background technique [0002] Alcohol fuel cell is an energy device that converts the chemical energy of alcohol into electrical energy. It has high energy conversion efficiency, high energy density, high mass-to-energy ratio, clean, easy to start, no noise, low radiation, and strong concealment , modular structure, flexible and convenient, and combined supply of water, electricity, and heat, etc., is recognized as one of the most likely future transportation and power supplies for handheld digital products, but the production cost of alcohol fuel cells, alcohol The problem of solution shuttling and its limited volume still limit its development and application. [0003] In recent years, the research on various parts of alcohol fuel cells has received ex...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M8/1011H01M8/1069
CPCH01M8/1011H01M8/1069Y02E60/50
Inventor 谭强翟文芳何玉婷段玉娥柳永宁
Owner XI AN JIAOTONG UNIV
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