Fuel cells, bifunctional catalysts thereof, and preparation methods therefor
AssigneeHarbin Institute of Technology, Shenzhen
InventorsYan Huang, Jinbo Fei, Jiaqi Wang
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Abstract
A bifunctional catalyst and a preparation method therefor are provided. The bifunctional catalyst is prepared by providing carbon matrix, adding 0.01-10 mol/L platinum containing solution, 0.01-10 mol/L palladium containing solution, 0.01-10 mol/L silver containing solution, and 0.01-15 mol/L sodium citrate trihydrate solution to the carbon matrix for reacting at 20° C. to 80° C. for 0.5 h to 24 h to obtain a mixed solution, and adding reducing agent to the mixed solution for reacting for 0.5 h to 30 h, and centrifuging and drying so as to obtain the bifunctional catalyst.
Claims9
A preparation method of a bifunctional catalyst, comprising steps of:
- (S1) providing a carbon matrix;
- (S2) adding 0.01-10 mol/L platinum containing solution, 0.01-10 mol/L palladium containing solution, 0.01-10 mol/L silver containing solution, and 0.01-15 mol/L sodium citrate trihydrate solution to the carbon matrix for reacting at 20° C. to 80° C. for 0.5 h to 24 h to obtain a mixed solution;
- and
- (S3) adding a reducing agent to the mixed solution for reacting for 0.5 h to 30 h, and centrifuging and drying for 6 h to obtain the bifunctional catalyst.
A bifunctional catalyst, which is prepared by a method comprising steps of:
- (S1) providing a carbon matrix;
- (S2) adding 0.01-10 mol/L platinum containing solution, 0.01-10 mol/L palladium containing solution, 0.01-10 mol/L silver containing solution, and 0.01-15 mol/L sodium citrate trihydrate solution to the carbon matrix for reacting at 20° C. to 80° C. for 0.5 h to 24 h to obtain a mixed solution;
- and
- (S3) adding a reducing agent to the mixed solution for reacting for 0.5 h to 30 h, and centrifuging and drying for 6 h to obtain the bifunctional catalyst.
A preparation method of a fuel cell, comprising steps of:
- preparing an anode by coating bifunctional catalyst on a first current collector, wherein the bifunctional catalyst is prepared by a method comprising steps of:
- (S1) providing a carbon matrix,
- (S2) adding 0.01-10 mol/L platinum containing solution, 0.01-10 mol/L palladium containing solution, 0.01-10 mol/L silver containing solution, and 0.01-15 mol/L sodium citrate trihydrate solution to the carbon matrix for reacting at 20° C. to 80° C. for 0.5 h to 24 h to obtain a mixed solution, and
- (S3) adding a reducing agent to the mixed solution for reacting for 0.5 h to 30 h, and centrifuging and drying for 6 h to obtain the bifunctional catalyst;
- preparing a cathode by coating N,S codoped carbon catalyst on a second current collector;
- preparing an electrolyte by polymerizing sodium acrylate and zinc acrylate with an initiator to obtain a hydrogel and soaking the hydrogel in a potassium hydroxide solution;
- and
- preparing the fuel cell by sandwiching the electrolyte between the cathode and the anode.
Dependencies are inferred from the claim text.