# US 2020/0403252 A1 · Fuel battery

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- Number: US 2020/0403252 A1
- Document ID: US20200403252A1
- Status: Published application
- Kind: A1
- Application number: 17/007,263
- Filed: 2020-08-31
- Published: 2020-12-24
- Earliest claimed: 2015-08-07
- Assignees: Sumitomo Electric Industries, Ltd.
- Applicants: Sumitomo Electric Industries, Ltd.
- Inventors: Kazuki OKUNO; Takahiro HIGASHINO; Masatoshi MAJIMA; Tomoyuki AWAZU
- Web page: https://patentgrep.com/patent/US20200403252A1

## CPC

- B22F 3/11: Making porous workpieces or articles
- H01M 8/0232: Metals or alloys
- B22F 3/1137: {by coating porous removable preforms}
- B22F 3/114: {the porous products being formed by impregnation (B22F3/1137, B22F3/26 take precedence)}
- B22F 3/1143: {involving an oxidation, reduction or reaction step}
- B22F 7/04: with one or more layers not made from powder, e.g. made from solid metal
- B22F 7/08: with one or more parts not made from powder {(B22F7/062 takes precedence)}
- C22C 1/08: Alloys with open or closed pores
- C22C 19/03: based on nickel
- C22C 19/05: with chromium
- C23C 24/08: by application of heat or pressure and heat (C23C24/04 takes precedence)
- C23C 28/00: Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
- C25D 1/08: Perforated or foraminous objects, e.g. sieves (C25D1/10 takes precedence)
- H01M 4/74: Meshes or woven material; Expanded metal
- H01M 4/8605: {Porous electrodes}
- H01M 4/8621: {containing only metallic or ceramic material, e.g. made by sintering or sputtering}
- H01M 4/8626: {characterised by the form}
- H01M 4/8657: {layered}
- H01M 4/8807: {Gas diffusion layers}
- H01M 4/8828: {Coating with slurry or ink}
- H01M 4/8885: {Sintering or firing}
- H01M 8/0239: Organic resins; Organic polymers
- H01M 8/0245: in the form of layered or coated products
- B22F 2007/045: {accompanied by fusion or impregnation}
- C23C 28/021: {including at least one metal alloy layer}
- H01M 2008/1095: {Fuel cells with polymeric electrolytes}
- Y02E 60/10: Energy storage using batteries
- Y02E 60/50: Fuel cells
- Y02P 70/50: Manufacturing or production processes characterised by the final manufactured product
- B22F: WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER (making alloys by powder metallurgy C22C); APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- C22C: ALLOYS (treatment of alloys C21D, C22F)
- C23C: COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL (making metal-coated products by extrusion B21C23/22; covering with metal by connecting pre-existing layers to articles, see the relevant places, e.g. B21D39/00, B23K; metallising of glass C03C; metallising mortars, concrete, artificial stone, ceramics or natural stone C04B41/00; enamelling of, or applying a vitreous layer to, metals C23D; treating metal surfaces or coating of metals by electrolysis or electrophoresis C25D; single-crystal film growth C30B; by metallising textiles D06M11/83; decorating textiles by locally metallising D06Q1/04)
- C25D: PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02P: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS

## Abstract

A porous metal body including a skeleton having a three-dimensional mesh-like structure, the porous metal body having a plate-like overall shape. The skeleton has a hollow structure and includes a primary metal layer and at least one of a first microporous layer and a second microporous layer. The primary metal layer is composed of nickel or a nickel alloy. The first microporous layer contains nickel and chromium and is disposed on the outer peripheral surface of the primary metal layer. The second microporous layer contains nickel and chromium and is disposed on the inner peripheral surface of the primary metal layer, the inner peripheral surface facing the hollow space of the skeleton.

## Claims

### Claim at position 1

1-18. (canceled)

### Claim 19

A fuel battery comprising the porous metal body, the porous metal body serving as a gas diffusion layer, the porous metal body including a skeleton having a three-dimensional mesh-like structure, the porous metal body having a plate-like overall shape,
the skeleton having a hollow structure, the skeleton comprising a primary metal layer and at least one of a first microporous layer and a second microporous layer,
the primary metal layer being composed of nickel or a nickel alloy,
the first microporous layer containing nickel and chromium, the first microporous layer being disposed on an outer peripheral surface of the primary metal layer,
the second microporous layer containing nickel and chromium, the second microporous layer being disposed on an inner peripheral surface of the primary metal layer, the inner peripheral surface facing a hollow space of the skeleton.

### Claim 20 (depends on 19)

The fuel battery according to claim 19, wherein the skeleton comprises the primary metal layer, the first microporous layer, and the second microporous layer.

### Claim 21 (depends on 19)

The fuel battery according to claim 19, wherein the content of chromium in the porous metal body is 20% by mass or more and 50% by mass or less.

### Claim 22 (depends on 19)

The fuel battery according to claim 19, wherein the overall shape of the porous metal body has a thickness of 0.2 mm or more and 1.2 mm or less.

### Claim 23 (depends on 19)

The fuel battery according to claim 19, wherein the porous metal body has a porosity of 51% or more and 90% or less and a metal-coating weight of 200 g/m2 or more and 1200 g/m2 or less.