WATER ELECTROLYSIS SEPARATOR AND ELECTROCHEMICAL DEVICE

    公开(公告)号:US20230416926A1

    公开(公告)日:2023-12-28

    申请号:US17942654

    申请日:2022-09-12

    Inventor: Joon Guen Park

    CPC classification number: C25B1/04 C25B9/19 C25B9/63 C25B11/02

    Abstract: A water electrolysis separator includes a first plate member having a reaction part configured to define a reaction region in which a reaction is produce by a membrane electrode assembly (MEA). The first plate member has first manifold flow paths spaced apart from the reaction part and first channel patterns extending from edges of the first manifold flow paths and defining first connection channels configured to connect the reaction part and the first manifold flow paths. The separator includes a second plate member stacked on the first plate member, configured to cover the first connection channels, and including a through portion corresponding to the reaction part and second manifold flow paths corresponding to the first manifold flow paths. The separator includes a sealing member configured to seal a portion between the first plate member and the second plate member.

    Copper integrated electrode with convertible oxidation state and preparation method and application method thereof

    公开(公告)号:US11845679B2

    公开(公告)日:2023-12-19

    申请号:US17095746

    申请日:2020-11-12

    Abstract: A copper integrated electrode with a convertible oxidation state, a preparation method and an application method are provided. The preparation process is based on an electrochemically induced self-growth method. Copper foam is used as a precursor, soaked in a graphene oxide solution, dried, calcined at high temperature and annealed, and then treated with an alkali solution to obtain the copper integrated electrode with the convertible oxidation state. The working electrode prepared by the nano-catalytic material of the present invention has good denitrification performance in the environmental field, which can achieve nearly 100% nitrate removal rate, nearly 100% nitrogen selectivity and long-term stability. These properties are due to the prepared working electrode having an oxidizable copper (I, II/0, I), oxygen vacancy (O) and a one-dimensional nanowire structure. The structure can regulate the adsorption and reduction of intermediate products, resulting in nearly 100% nitrate removal rate and nearly 100% nitrogen selectivity.

Patent Agency Ranking