Gas diffusion electrode and electrolytic method using it
    71.
    发明授权
    Gas diffusion electrode and electrolytic method using it 失效
    气体扩散电极及其电解方法

    公开(公告)号:US5733430A

    公开(公告)日:1998-03-31

    申请号:US626924

    申请日:1996-04-03

    摘要: A gas diffusion electrode is constituted by forming a porous layer comprising a super-fine particle catalyst of silver or gold and a fluorine-containing material on a substrate and connecting a gas-liquid permeable collector to the substrate. The gas diffusion electrode can be used stably as an oxygen cathode for a sodium chloride electrolysis, etc., for a long period of time without causing decreased water repellency of the fluorine-containing material in the gas diffusion electrode and without lowering the activity of the electrode substance.

    摘要翻译: 气体扩散电极通过在基板上形成包含银或金的超细颗粒催化剂和含氟材料的多孔层而构成,并将气液渗透性集电体连接到基板。 气体扩散电极可以长时间稳定地用作氯化钠电解等的氧阴极,而不会降低气体扩散电极中的含氟材料的拒水性,并且不会降低气体扩散电极的活性 电极物质。

    Electrolytic process of salt water
    72.
    发明授权
    Electrolytic process of salt water 失效
    盐水电解过程

    公开(公告)号:US5693213A

    公开(公告)日:1997-12-02

    申请号:US470615

    申请日:1995-06-06

    CPC分类号: C25B1/46

    摘要: A salt water electrolysis process for electrolyzing an aqueous alkali chloride solution capable of preventing the deterioration of a gas diffusion cathode is disclosed. A cation-exchange membrane having closely disposed to one surface thereof an insoluble metal anode and having closely adhered or mechanically attached to the opposite surface thereof a liquid permeable gas diffusion cathode is disposed in an electrolytic cell, and electrolysis is carried out while supplying salt water to the anode chamber and an oxygen-containing gas containing water as steam or fine water droplets to the cathode chamber, and an alkali hydroxide is obtained from the cathode chamber. The water-containing gas directly reaches the gas diffusion cathode and since the alkali hydroxide and the alkali carbonate formed at the surface of the cathode are dissolved in the water in the gas and removed from the electrolytic cell, deterioration of the gas diffusion cathode can be prevented.

    摘要翻译: 公开了一种用于电解能够防止气体扩散阴极劣化的氯化碱水溶液的盐水电解方法。 在电解槽中设置阳离子交换膜,其阳离子交换膜在其一个表面上紧密配置有不溶性金属阳极,并且在其相对表面上紧密地或机械地附着有液体渗透性气体扩散阴极,并且在供给盐水的同时进行电解 并将含有水作为蒸气或微小水滴的含氧气体输送到阴极室,从阴极室获得碱金属氢氧化物。 含水气体直接到达气体扩散阴极,由于形成在阴极表面的碱金属氢氧化物和碱金属碳酸盐溶解在气体中的水中并从电解槽中除去,气体扩散阴极的劣化可以是 防止了

    Gas diffusion electrode
    73.
    发明授权
    Gas diffusion electrode 失效
    气体扩散电极

    公开(公告)号:US5584976A

    公开(公告)日:1996-12-17

    申请号:US636185

    申请日:1996-04-22

    CPC分类号: H01M4/86 C25B11/035

    摘要: A gas diffusion electrode comprisinga porous sheet substrate, at least the surface of which is formed by silver;a reaction layer formed on a first surface of the substrate, comprising a porous silver layer and a mixed layer further comprising a hydrophilic material and a hydrophobic material, the mixed layer being formed on a surface of the porous silver layer; and,a gas diffusion layer formed on a second surface of the substrate, comprising a hydrophobic material.The gas diffusion electrode can be stably used for, e.g., sodium chloride electrolysis for extended periods of time even under severe conditions.

    摘要翻译: 一种气体扩散电极,包括至少其表面由银形成的多孔片基片; 形成在所述基板的第一表面上的反应层,包括多孔银层和进一步包含亲水材料和疏水材料的混合层,所述混合层形成在所述多孔银层的表面上; 以及形成在所述基板的第二表面上的气体扩散层,其包含疏水性材料。 即使在恶劣条件下,气体扩散电极也可以稳定地用于例如氯化钠电解延长的时间。

    Activated cathode for hydrogen evolution
    75.
    发明授权
    Activated cathode for hydrogen evolution 有权
    活化阴极用于析氢

    公开(公告)号:US09133556B2

    公开(公告)日:2015-09-15

    申请号:US13576811

    申请日:2011-01-18

    IPC分类号: C25B11/00 C25B11/04

    摘要: The present invention aims to provide an activated cathode enabling a long-time stable operation with hydrogen overvoltage maintained at a low value, keeping a high remaining rate of the catalyst element after a cease of operation for a short-circuiting and after an electrolysis operation at a high current density, restricting catalyst loss to a little, and having a strong resistance to contamination caused by electrolyte impurity elements.The present invention relates to a cathode for hydrogen evolution with a catalyst layer formed on the cathode substrate, having, at least, three elements comprising platinum, cerium and palladium, as essential element, in a state of metal, metal oxide, or hydroxide, contained, where the mole fraction of respective element being x, y, and z, within a range of 5 mol %≦x≦90 mol %, 5 mol %≦y≦55 mol %, 5 mol %≦z≦65 mol %.

    摘要翻译: 本发明的目的在于提供一种能够在氢过电压保持低值的情况下进行长时间稳定运行的活性阴极,在短路运转停止后和电解运转后保持催化剂元素的高残留率 高电流密度,将催化剂损失限制到少许,并且对电解质杂质元素引起的污染具有很强的抵抗力。 本发明涉及在金属,金属氧化物或氢氧化物的状态下,在阴极基板上形成有催化剂层的阴极,其具有至少三种包含铂,铈和钯作为必需元素的元素, 含有,其中各元素的摩尔分数为x,y和z在5mol%& NlE; x& NlE; 90mol%,5mol%& NlE; y& NlE; 55mol%,5mol%和nlE; z& 65摩尔%。

    Cathode for hydrogen generation
    76.
    发明授权
    Cathode for hydrogen generation 有权
    生成氢气的阴极

    公开(公告)号:US07959774B2

    公开(公告)日:2011-06-14

    申请号:US12398234

    申请日:2009-03-05

    IPC分类号: C25B11/06 C25B11/08

    摘要: The present invention provides a cathode for hydrogen generation comprising a cathode substrate having provided thereon a catalytic layer, wherein the catalytic layer contains at least three components of platinum, cerium and lanthanum in amounts of 50 to 98 mol %, 1 to 49 mol % and 1 to 49 mol %, respectively, in the form of metal, metal oxide or metal hydroxide.

    摘要翻译: 本发明提供了一种用于氢气生成的阴极,其包括在其上设置有催化剂层的阴极基底,其中所述催化剂层含有至少三种组分的铂,铈和镧,含量为50至98摩尔%,1至49摩尔%,和 分别为金属,金属氧化物或金属氢氧化物形式的1〜49摩尔%。