Preparation method and application of polyionic liquid functionalized cobalt-nitrogen loaded foamed nickel composite material

A technology of polyionic liquids and composite materials, which is applied in the preparation of foamed nickel composite materials and the application field of oxygen reduction reaction, which can solve the problems of affecting catalytic activity and reducing electrode conductivity, so as to reduce charge transfer resistance and increase electron transfer rate, the effect of increasing catalytically active sites
CN112259750AActive Publication Date: 2021-01-22HEBEI UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HEBEI UNIV OF TECH
Publication Date
2021-01-22

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Abstract

The invention relates to a preparation method and application of a polyionic liquid functionalized cobalt-nitrogen loaded foamed nickel composite material. The method comprises the following steps of:1, uniformly coating a treated polyionic liquid solution on foamed nickel, and then performing drying; 2, immersing the foamed nickel treated in the step 1 into a mixed solution containing urea, cobalt nitrate hexahydrate and CTAB (cetyltrimethyl ammonium bromide), transferring the product into a high-pressure reaction kettle, and keeping the state for 8h-12h at the temperature of 150DEG C-170DEGC to obtain a black blocky composite material; wherein the polyionic liquid is specifically poly[Dbz-mim]cl. The electro-catalytic composite material synthesized by the method provided by the invention has good oxygen reduction catalytic activity. The initial potential and the half-wave potential of the composite material are 0.85V and 0.71V respectively and are close to 0.95V and 0.81V of commercial platinum-carbon, and the composite material has high limiting current density.
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Description

technical field

[0001] The invention belongs to the technical field of nickel foam composite materials, in particular to a nickel foam composite material functionalized with polyionic liquid, more specifically to a method for preparing a nickel foam composite material loaded with cobalt nitrogen and polyionic liquid functionalized and used for oxygen reduction React application. Background technique

[0002] With the advent of the global energy crisis and the increasing environmental pollution and greenhouse effect caused by the burning of fossil fuels, the development of clean energy is imminent. People are paying more and more attention to the storage and conversion of sustainable energy, and fuel cells, as one of the most promising clean energy converters, have high research value. In a fuel cell, fuel is oxidized at the anode, and the released electrons are transferred through an external circuit to the cathode, where oxygen is reduced. However, due to the oxygen reduc...

Claims

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