Highly-dispersed support core-shell structure Pd @ Ni/WC direct alcohol fuel cell catalyst and preparation method thereof

A core-shell structure, fuel cell technology, applied in the direction of fuel cells, battery electrodes, structural parts, etc., can solve the problems of anode catalysts restricting the industrialization process of direct alcohol fuel cells, limited cost reduction, and poor stability. Facilitate large-scale production, reduce usage and cost, and not easy to agglomerate
CN108963283AActive Publication Date: 2018-12-07DALIAN UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
DALIAN UNIV OF TECH
Publication Date
2018-12-07

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Abstract

A highly dispersed supported core-shell structure Pd @ Ni / WC direct alcohol fuel cell catalyst and its preparation method belong to the field of energy materials and electrochemical technology. Firstly, porous WC support was prepared by calcination of SiO2 at high temperature. Ni / WC was prepared by chemical reduction using NiCl _ 2 -6 H _ 2O as Ni source. Finally, Ni atoms on Ni surface were substituted for Pd by substitution method, and the catalyst with Ni nanoparticles as core and Pd as shell was obtained. As that core-shell structure nanoparticle of the invention are uniformly dispersed onthe surface of the WC carry with high conductivity, the core-shell structure can improve the conduction of alcohols and electrons, and the bimetallic alloy has a synergistic structure and an electronic effect, and also can improve the catalytic performance; and the core-shell structure nanoparticles of the invention are uniformly dispersed on the surface of the WC carry with high conductivity. Asthat preparation process of the invention is simple, the raw material cost is low and the source is rich, the cost can be reduced, and the invention is favorable for large-scale production.
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Description

technical field

[0001] The invention belongs to the technical field of energy materials and electrochemistry, and relates to an anode electrocatalyst for a direct alcohol fuel cell, in particular to a Pd@Ni / WC catalyst with a core-shell structure and a preparation method thereof. Background technique

[0002] Fuel cell is a high-efficiency and clean power generation device that directly converts the chemical energy of fuel into electrical energy. It is of great significance to solve the two major problems of "energy shortage" and "environmental pollution" facing the world today, and is considered to be the most important in the 21st century. One of the energy dynamics. Due to its high theoretical energy density, non-toxicity, cleanliness, convenient storage and transportation, and safety, fuel cells have attracted widespread attention in recent years and have very broad application prospects.

[0003] Direct alcohol fuel cells use small molecule alcohols, such as CH 3 OH, ...

Claims

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