CONDUCTIVE MEMBER, ELECTROCHEMICAL REACTION UNIT, AND ELECTROCHEMICAL REACTION CELL STACK

• Main Authors: MURATA TOMOKI, TANAKA TOMOO
• Format: Patent
• Language: English; Japanese
• Published: 15.11.2018
• Subjects: APPARATUS THEREFOR; BASIC ELECTRIC ELEMENTS; CABLES; CHEMISTRY; CONDUCTORS; ELECTRICITY; ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTIONOF COMPOUNDS OR NON-METALS; INSULATORS; METALLURGY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING ORDIELECTRIC PROPERTIES

PROBLEM TO BE SOLVED: To effectively suppress the rise in electrical resistance of a conductive member.SOLUTION: A conductive member comprises: a metal member; an oxide coating layer; and a coating layer. The metal member has: a base portion containing Fe and Cr; and an alloy phase including Fe, Cr and Co, and having a Co concentration of 1.0 wt.% or more, which is higher than a Co concentration of the base portion. The oxide coating layer is disposed on a surface formed by the alloy phase in the metal member, and includes Cr oxide. The oxide coating layer has a Cr concentration which is higher than a Cr concentration of the metal member. The coating layer is disposed on a surface of the oxide coating layer on a side opposite to a surface opposed to the metal member, and includes Co oxide.SELECTED DRAWING: Figure 8 【課題】導電性部材の電気抵抗の上昇を効果的に抑制する。【解決手段】導電性部材は、金属部材と、酸化被膜層と、被覆層とを備える。金属部材は、ＦｅとＣｒとを含有する基部と、ＦｅとＣｒとＣｏとを含有し、Ｃｏ濃度が、１．０ｗｔ％以上であり、かつ、基部のＣｏ濃度より高い合金相とを有する。酸化被膜層は、金属部材における合金相により構成された表面上に配置され、Ｃｒ酸化物を含む。酸化被膜層のＣｒ濃度は、金属部材のＣｒ濃度より高い。被覆層は、酸化被膜層における金属部材に対向する表面とは反対側の表面上に配置され、Ｃｏ酸化物を含む。【選択図】図８