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Ethanol fuel cell anode and preparation method thereof

A fuel cell and anode technology, which is applied in battery electrodes, circuits, electrical components, etc., can solve the problems of accelerating the poisoning of noble metal catalysts, aggravating the failure of ethanol fuel cells, and expensive noble metals, so as to avoid carbon corrosion and adhesive aging, The effect of saving labor and material costs and reducing material costs

Active Publication Date: 2019-08-09
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, ethanol fuel cells widely use the indirect brushing method to mix noble metal nanopowders as anode catalysts with conductive carbon powder, and then use adhesives (such as Nafion, polytetrafluoroethylene) to brush the mixture onto the surface of the anode current collector (such as copper foil, nickel foil, etc.) to prepare the anode; this method has the following inherent problems: first, precious metals are expensive and are easily poisoned by intermediate products generated during the discharge process, thereby reducing durability; second, the conductivity of the anode during preparation The corrosion and aging of carbon and binder during use make the catalytic layer fall off, which makes the anode invalid and the battery malfunctions; third, with the corrosion and aging of carbon and binder, the organic intermediate products produced by its side reactions, Accelerate the poisoning of noble metal catalysts and aggravate the failure of ethanol fuel cells
But there is no information about La 1-x Ni 1+x o 3 A report of perovskite-coated copper foam used in ethanol fuel cells, while using laser-deposited La 1-x Ni 1+x o 3 The method of directly covering copper foam with perovskite film, avoiding conductive carbon and adhesives to prepare ethanol fuel cell anode is an innovative research

Method used

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  • Ethanol fuel cell anode and preparation method thereof
  • Ethanol fuel cell anode and preparation method thereof
  • Ethanol fuel cell anode and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] This embodiment provides a La 1-x Ni 1+x o 3 Ethanol fuel cell anode and preparation method of perovskite film-coated foamed copper; the specific process is:

[0032] A. Preparation

[0033] Step 1, pretreatment of the foamed copper substrate; cut the foamed copper with a length and width of 4cm, a thickness of 0.5mm, and a purity of 99.99%, ultrasonically wash in acetone for 8 hours to remove grease, and ultrasonically wash in 6% dilute hydrochloric acid for 10 minutes to remove copper on the surface Oxides, washed with high-purity deionized water, dried in vacuum and set aside;

[0034] Step 2, press La 1-x Ni 1+x o 3 Composition variable x = 1% batching, grinding for 1 hour, firing La 1-x Ni 1+x o 3 target;

[0035] Step 3, the copper foam prepared in step 1 is preheated at 200°C in situ, and La 1-x Ni 1+x o 3 The target is placed on the target platform for laser pre-cleaning for 3 minutes to remove surface impurities;

[0036] Step 4, set the target di...

Embodiment 2

[0045] This example is a La 1-x Ni 1+x o 3 Ethanol fuel cell anode and preparation method of perovskite film-coated foamed copper; the specific process is:

[0046] A. Preparation

[0047] Step 1, pretreatment of the foamed copper substrate; cut the foamed copper with a length and width of 4cm, a thickness of 0.5mm, and a purity of 99.99%, ultrasonically wash in acetone for 8 hours to remove grease, and ultrasonically wash in 6% dilute hydrochloric acid for 10 minutes to remove copper on the surface Oxides, washed with high-purity deionized water, dried in vacuum and set aside;

[0048] Step 2, press La 1-x Ni 1+x o 3 Composition variable x = 2% batching, grinding for 1 hour, firing La 1-x Ni 1+x o 3 target;

[0049] Step 3, the copper foam prepared in step 1 is preheated at 200°C in situ, and La 1-x Ni 1+x o 3 The target is placed on the target platform for laser pre-cleaning for 3 minutes to remove surface impurities;

[0050] Step 4, set the target distance to...

Embodiment 3

[0059] This example is a La 1-x Ni 1+x o 3 Ethanol fuel cell anode and preparation method of perovskite film-coated foamed copper; the specific process is:

[0060] A. Preparation

[0061] Step 1, pretreatment of foamed copper substrate; cut the foamed copper with a length and width of 5cm, a thickness of 0.5mm, and a purity of 99.99%, ultrasonically wash in acetone for 9 hours to remove grease, and ultrasonically wash in 6% dilute hydrochloric acid for 10 minutes to remove copper on the surface Oxides, washed with high-purity deionized water, dried in vacuum and set aside;

[0062] Step 2, press La 1-x Ni 1+x o 3 Component variable x = 5% batching, grinding for 1 hour, firing La 1-x Ni 1+x o 3 target;

[0063] Step 3, the copper foam prepared in step 1 is preheated at 200°C in situ, and La 1-x Ni 1+x o 3 The target is placed on the target platform for laser pre-cleaning for 3 minutes to remove surface impurities;

[0064] Step 4, set the target distance to 6cm; ...

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Abstract

The invention belongs to the technical field of ethanol fuel cells and provides an ethanol fuel cell anode and a preparation method thereof for overcoming the problems of corrosion of conductive carbon, the aging of adhesive and precious metal poisoning in the prior art. The ethanol fuel cell anode is formed by directly coating the surface of foamed copper by using a non-precious metal La1-xNi1+xO3 film, and the material cost is greatly reduced compared with a conventional platinum and palladium precious metal system. A La1-xNi1+xO3 perovskite film and the foamed copper are compounded by laserpulse at high temperature, and so that a surface catalytic layer and a current collector form a composite material. The composite effect of simultaneously catalyzing and collecting current and enhancing the electrical conductivity of the whole system is generated, and at the same time, the use of the conductive carbon and adhesive is avoided. The failure of a working electrode caused by the carbon corrosion and adhesive aging can be completely avoided. In addition, the preparation process is simple, the preparation cost is low, and the industrial production is facilitated.

Description

technical field [0001] The invention belongs to the technical field of ethanol fuel cells, and provides an anode of an ethanol fuel cell and a preparation method thereof, specifically a La 1-x Ni 1+x o 3 An anode of an ethanol fuel cell with a perovskite thin film coated copper foam and a preparation method thereof. Background technique [0002] The ethanol fuel cell is a new energy device that can directly convert the chemical energy in ethanol and oxygen into electrical energy. In addition, its reactants are renewable ethanol and oxygen, and the emissions are water and CO with low environmental hazards. 2 Therefore, it has been widely concerned by the scientific community. At present, ethanol fuel cells widely use the indirect brushing method to mix noble metal nanopowders as anode catalysts with conductive carbon powder, and then use adhesives (such as Nafion, polytetrafluoroethylene) to brush the mixture onto the surface of the anode current collector (such as copper ...

Claims

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Application Information

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IPC IPC(8): H01M4/86H01M4/90H01M4/88
CPCH01M4/8657H01M4/9016H01M4/9075H01M4/8867H01M2004/8684Y02E60/50
Inventor 吴小强乔梁
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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