Preparation method of hollow Ni2P/Co2P/Fe2P nano-composite electrocatalyst

A technology of nanocomposite and nanocomposite materials, which is applied in the field of preparation of hollow Ni2P/Co2P/Fe2P nanocomposite electrocatalysts, which can solve the problems of general electrocatalytic oxygen evolution performance, complex synthesis process and low output, and achieve high electrocatalytic performance As well as stability, simple synthesis process, and the effect of reducing transfer internal resistance
CN110354876AActive Publication Date: 2019-10-22NANJING UNIV OF SCI & TECH
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Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
NANJING UNIV OF SCI & TECH
Publication Date
2019-10-22

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Abstract

The invention discloses a preparation method of a hollow Ni2P / Co2P / Fe2P nano-composite electrocatalyst. The method comprises the following steps: preparing a nickel-cobalt precursor, used as a template, by using nickel acetate, cobalt acetate and polyvinylpyrrolidone as reaction materials and ethanol as a reaction solvent, adding potassium ferricyanide, and preparing a hollow Prussian blue analogthrough room temperature stirring by using ethanol and water as reaction solvents; and phosphating PBA in a tubular furnace at a low temperature with sodium hypophosphite as a phosphorus source to prepare the hollow Ni2P / Co2P / Fe2P nano-composite material. The hollow Ni2P / Co2P / Fe2P nano-composite electrocatalyst prepared in the invention has the advantages of high repeatability, simple and high preparation process, and superior catalytic activity and stability in electrocatalytic oxygen evolution reactions.
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Description

technical field

[0001] The invention belongs to the field of preparation technology and application of nanometer materials and electrocatalysts, specifically a hollow Ni 2 P / Co 2 P / Fe 2 Preparation method of P nanocomposite electrocatalyst. Background technique

[0002] Electrocatalytic oxygen evolution reaction (Oxygen evolution reaction, OER) plays an important role in energy conversion and storage. The biggest bottleneck for OER reaction is its slow kinetic process, and noble metals Ru-based and Ir-based are often used as catalysts. However, the scarcity, high cost, and low selectivity of noble metal-based catalysts greatly limit their wide application. Therefore, developing an electrocatalyst to replace noble metals is a research focus in this field. In order to find an ideal OER catalyst with low cost, high chemical stability and excellent performance that can replace traditional noble metal catalysts, transition metal nitrides, sulfides, oxides, phosphides and othe...

Claims

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