A solvothermal reduction carbon-supported platinum-based catalyst for fuel cell and a preparation method and application thereof

A technology of fuel cell and solvothermal method, which is applied in the direction of fuel cells, battery electrodes, electrochemical generators, etc., and can solve problems such as high requirements for surfactants or protective agents and operating conditions, difficulty in mass production, and complicated operations , to achieve the effect of improving the utilization rate of precious metals, easy regulation and uniform particle size
CN108963282AInactive Publication Date: 2018-12-07SUN YAT SEN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SUN YAT SEN UNIV
Publication Date
2018-12-07
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a method for preparing a carbon-supported platinum-based catalyst of a fuel cell by a solvothermal method, which is applied to a proton exchange membrane fuel cell and comprises the steps of: In the cathode reaction of oxygen fuel cell and direct alcohol fuel cell, it belongs to the electrochemical catalytic reaction field. A solvothermal reduction process is used, A support carbon material is sufficiently dispersed in a solvent, A metal precursor solution is added with stirring, that mass percentage of the active ingredient reaches 20 to 60 wt% in the prepared catalyst, the pH value of the solution is adjusted to above 9 by an alkaline solution, and the mixture is react in a high-temperature and high-pressure sealed reaction vessel. After the reaction, the pH valuewas adjusted to less than 5 by acidic solution, and the reaction solution was filtered, washed, dried and ground to obtain carbon-supported platinum-based electrocatalyst. The catalyst active ingredient prepared by the invention has small particle diameter and is uniformly dispersed on a carbon carrier, and has high activity. The preparation process of the invention is simple in operation, rapidin reaction, low in energy consumption, low in cost, and easy to realize mass industrial production.
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Description

technical field

[0001] The invention belongs to the field of proton exchange membrane fuel cell catalysts, including hydrogen-oxygen fuel cell catalysts and direct alcohol fuel cell catalysts, and relates to a preparation method of a carbon-supported platinum-based material, in particular to a solvent using a sealed reaction vessel under high temperature and high pressure Thermal preparation methods and applications. Background technique

[0002] A fuel cell is an energy conversion device that converts chemical energy into electrical energy. It has attracted people's attention due to its advantages of high energy conversion efficiency, low environmental pollution, and convenient fuel portability. Proton exchange membrane fuel cell (PEMFC) has attracted much attention due to its advantages of high energy density, low operating temperature and no pollution. There are generally two sources of fuel for PEMFC: one directly uses pure hydrogen or reformed hydrogen-rich gas as fuel...

Claims

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