Patent ID: 11929513
Assignee: HARBIN INSTITUTE OF TECHNOLOGY (SHENZHEN)
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  C  Y | IPC C  H

Claim 8:
9. 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.