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Ni-Cu binary catalyst for improving performance of direct borohydride fuel cell

A fuel cell and catalyst technology, applied in the field of electrochemical applications, can solve the problems of low direct oxidation performance, large charge transfer resistance, low fuel utilization rate, etc., so as to enhance the direct oxidation performance, reduce the charge transfer resistance, and improve the discharge. The effect of efficiency

Inactive Publication Date: 2013-10-16
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when using Ni as the anode catalyst in the prior art, BH 4 - The direct oxidation performance of Ni is not high, the Ni electrode is easy to corrode, the charge transfer resistance is large, and the fuel utilization rate is low

Method used

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  • Ni-Cu binary catalyst for improving performance of direct borohydride fuel cell
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  • Ni-Cu binary catalyst for improving performance of direct borohydride fuel cell

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Experimental program
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Effect test

Embodiment 1

[0015] Under normal pressure, the temperature is in the range of 293.15 ~ 313.15K, and 0.25mol / L CuSO is configured under acidic conditions 4 solution. 2cm 2 The Ni sheet was used as the working electrode and placed in the above solution, the Cu rod was used as the counter electrode, and the silver / silver chloride electrode was used as the reference electrode. On the electrochemical workstation, the constant potential method was used to electrodeposit at -0.1V for 5s. A Ni-Cu binary catalyst was obtained. Weigh sodium borohydride, and dissolve it in 2mol / L sodium hydroxide solution to prepare 0.27mol / L sodium borohydride solution, mix well and use it as electrolyte for direct borohydrogen fuel cell. 2cm 2 The Ni sheet and Ni-Cu were used as the working electrode, the mercury / mercury oxide electrode was used as the reference electrode, and the graphite rod was used as the auxiliary electrode. Cyclic voltammetry was used for performance testing.

[0016] figure 1 gives NaBH...

Embodiment 2

[0019] Under normal pressure, the temperature is in the range of 293.15 ~ 313.15K, and 0.25mol / L CuSO is configured under acidic conditions 4 solution. 2cm 2 The Ni sheet was used as the working electrode and placed in the above solution, the Cu rod was used as the counter electrode, and the silver / silver chloride electrode was used as the reference electrode. On the electrochemical workstation, the constant potential method was used to electrodeposit at -0.1V for 5s. A Ni-Cu binary catalyst was obtained. Weigh sodium borohydride, and dissolve it in 2mol / L sodium hydroxide solution to prepare 0.27mol / L sodium borohydride solution, mix well and use it as electrolyte for direct borohydrogen fuel cell. 2cm 2 The Ni sheet and Ni-Cu are used as the working electrode, the mercury / mercury oxide electrode is used as the reference electrode, and the graphite rod is used as the auxiliary electrode, and the AC impedance spectroscopy performance test is performed.

[0020] In the AC i...

Embodiment 3

[0022] Under normal pressure, the temperature is in the range of 293.15 ~ 313.15K, and 0.25mol / L CuSO is configured under acidic conditions 4 solution. 2cm 2 The Ni sheet was used as the working electrode and placed in the above solution, the Cu rod was used as the counter electrode, and the silver / silver chloride electrode was used as the reference electrode. On the electrochemical workstation, the constant potential method was used to electrodeposit at -0.1V for 5s. A Ni-Cu binary catalyst was obtained. Weigh sodium borohydride, and dissolve it in 2mol / L sodium hydroxide solution to prepare 0.27mol / L sodium borohydride solution, mix well and use it as electrolyte for direct borohydrogen fuel cell. 2cm 2 The Ni sheet and Ni-Cu are used as the working electrode, the mercury / mercury oxide electrode is used as the reference electrode, and the graphite rod is used as the auxiliary electrode, and the constant current discharge performance test is carried out.

[0023] Fi...

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Abstract

A Ni-Cu binary catalyst for improving the performance of a direct boron-hydrogen fuel cell, characterized in that the catalyst is prepared by the following method: (1) under normal pressure, the temperature is in the range of 293.15-313.15K, and the acidic condition is configured at 0.25 mol / L CuSO4 solution; (2) Device three-electrode system: place a 2cm2 Ni sheet as a working electrode in the above solution, use a Cu rod as a counter electrode, and a silver / silver chloride electrode as a reference electrode; (3) On the electrochemical workstation, Ni-Cu binary catalyst was prepared by electrodeposition at -0.1V for 5s by constant potential method. The catalyst enhances the direct oxidation performance of BH4-, weakens the corrosion of the electrolyte on the Ni anode, reduces the charge transfer resistance, and improves the discharge efficiency.

Description

technical field [0001] The invention belongs to the field of electrochemical applications, in particular to a Ni-Cu binary catalyst for improving the performance of a direct boron-hydrogen fuel cell. Background technique [0002] At present, metal catalysts such as Ni, Pt, Pd, and Au are usually used to improve the performance of direct boron-hydrogen fuel cells. Since noble metal anode catalysts such as Au, Pt, and Pd are expensive, efforts to develop non-noble metal Ni anode catalysts have become a research focus. However, when using Ni as the anode catalyst in the prior art, BH 4 - The direct oxidation performance of Ni is not high, the Ni electrode is easy to corrode, the charge transfer resistance is large, and the fuel utilization rate is low. Contents of the invention [0003] Purpose of the present invention is exactly in order to overcome above-mentioned deficiencies in the prior art, a kind of binary catalyst that improves direct boron hydrogen fuel cell perfo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/90
CPCY02E60/50
Inventor 余丹梅申燕陈昌国王洁
Owner CHONGQING UNIV
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