Hydrogen supply system for generating a hydrogen gas from an electrolyte water by water splitting

    公开(公告)号:US20230313387A1

    公开(公告)日:2023-10-05

    申请号:US17706999

    申请日:2022-03-29

    发明人: Mitsuhiro SASO

    摘要: This is a system for generating and supplying a hydrogen gas from water by water splitting using a carbon electrode containing ethylidyne without any external electric power, which system comprises A) a carbon electrode containing ethylidyne, B) an alkaline electrolyte water solution and C) a metal electrode selected from group consisting of a typical metal including zinc, aluminum and magnesium and a transition metal including copper, wherein the carbon electrode containing ethylidyne and the metal electrode are brought into contact with or opposed to each other in the alkaline electrolyte water solution, and the water is decomposed by the effect of ethylidyne to generate a hydrogen gas according to the following reaction.


    CH3C+O→CH3CO++e−



    2H++2e−→H2↑

    as shown in FIG. 1A

    Barrier layer for corrosion protection in electrochemical devices

    公开(公告)号:US11299810B2

    公开(公告)日:2022-04-12

    申请号:US14761782

    申请日:2014-02-20

    摘要: The invention is directed to a barrier layer for corrosion protection in electrochemical devices, e.g. carbon based gas diffusion layers (GDLs) in electrochemical devices, comprising electrically conductive ceramic material and a non-ionomeric polymer binder. The electrically conductive ceramic material has an electrical conductivity of >0.1 S/cm, preferably >1 S/cm in air atmosphere (as detected by the powder method) and is selected from the group of precious metal and/or base metal containing oxides, carbides, nitrides, borides and mixtures and combinations thereof. Membrane-electrode assemblies (MEAs), catalyst-coated membranes (CCMs), gas diffusion electrodes (GDEs) and gas diffusion layers (GDLs) comprising the barrier layer of the invention show improved corrosion resistance, preferably against carbon corrosion; particularly in start-up/shut-down cycles and fuel starvation situations of PEM fuel cells.