The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 01, 2022
Filed:
Jun. 07, 2021
National Engineering Research Center of Advanced Energy Storage Materials (Shenzhen) Co., Ltd, Shenzhen, CN;
Faping Zhong, Shenzhen, CN;
Jinchun Xiao, Shenzhen, CN;
Jianqi Li, Shenzhen, CN;
Changping Fu, Shenzhen, CN;
Xiaobing Huang, Shenzhen, CN;
Abstract
The invention provides a matrix material for the gas diffusion layer of the polymer electrolyte membrane fuel cell, which is composed of three-dimensional porous and strip-shaped hexagonal chambers connected to each other, wherein the six-sided ribs are composed of two metal layers, the inside is metal nickel, and the outside is tungsten-nickel alloy. The total mass of metal per square meter of the material is: 1500˜3000 grams, the mass content of metal nickel in the material is 88˜92%, the mass content of metal tungsten is 8˜12%, and the rest are impurities; the thickness of the matrix material is 0.1˜0.2 mm, specific surface area is (1˜2)×10m/m; longitudinal air permeability ≥2000 m/mm/(cmhmmAq), longitudinal thermal conductivity ≥1.7W/(m·k), transverse thermal conductivity ≥21W/(m·K). The porous nickel-tungsten metal material of the invention, as the matrix material of the gas diffusion layer, has the advantages of lower electrical resistance and higher strength compared with carbon paper.