US 12,763,337 B2Granted

Gas diffusion electrode base material product and polymer electrolyte fuel cell

AssigneeToray Industries, Inc.

InventorsHiroaki Otake, Masamichi Utsunomiya, Fumitaka Watanabe

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Abstract

An object of the present invention is to shorten the aging time for a fuel cell. To achieve the object, a gas diffusion electrode medium product according to the present invention includes sulfuric acid in an amount of 1.1 μg/cm2 or less. In addition, a polymer electrolyte fuel cell according to the present invention has the gas diffusion electrode medium product according to the present invention incorporated therein.

Claims9

Dependent claims

A gas diffusion electrode medium product comprising sulfuric acid in an amount of from 0.01 to 1.1 μg/cm2.

Dependencies are inferred from the claim text.

Facts

Application: 18/037,616Filed 25 Nov 2021
Priority: JP 2020-19564626 Nov 2020
Published: US 2024/0030461 A125 Jan 2024
Granted: 13 Oct 2026
Term ends: Not estimatedThe source records don’t support an estimate.

Classification8 codes

H01M 4/8807
Supports for the deposition of the catalytic active composition: gas diffusion layers
H01M 4/8605
Inert electrodes with catalytic activity, e.g. for fuel cells: porous electrodes
H01M 4/8673
Selection of inactive substances as ingredients for catalytic active masses, e.g. binders, fillers: electrically conductive fillers
H01M 4/96
Inert electrodes with catalytic activity, e.g. for fuel cells: carbon-based electrodes

Family

US 2024/0030461 A1Pre-grant publication · published 25 Jan 2024
US 12,763,337 B2This patent

From the US filing history. Foreign family members aren’t listed.

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