首页>
外国专利>
Electrode covered with a catalyst exhibiting a low overvoltage for the release of oxygen, capable of being used especially for the electrolysis of water in an alkaline medium and process for its preparation
Electrode covered with a catalyst exhibiting a low overvoltage for the release of oxygen, capable of being used especially for the electrolysis of water in an alkaline medium and process for its preparation
展开▼
机译:电极上覆盖的催化剂显示出低的过电压以释放氧气,尤其适用于碱性介质中水的电解及其制备方法
展开▼
页面导航
摘要
著录项
相似文献
摘要
An electrode is described, consisting of a metal support acting as current collector (plate, cloth or grid, for example of expanded nickel) covered with a layer of finely divided nickel whose specific surface is, for example, from 10 to 80 m2/g and in which the pore size is, for example, from 2 to 10 nm, for example by spraying onto its surface molten particles of a nickel-aluminium alloy by means of a plasma torch, and then eroding the aluminium from this alloy with an alkaline solution (Raney nickel), and then with a fine layer of an oxide containing cobalt, deposited (or formed) in the pores of the divided nickel layer (for example by impregnation with a solution containing at least one cobalt salt, followed by drying and calcining). This electrode is advantageously employed as anode, in particular for the electrolysis of water in an alkaline medium: it has a reduced overvoltage for the release of oxygen.
展开▼
机译:描述了一种电极,该电极由用作集电器的金属载体(板,布或栅格,例如膨胀镍)覆盖,该金属载体覆盖有细分的镍层,其比表面积例如为10至80 m <2 > / g,并且其中孔径例如为2至10nm,例如通过利用等离子炬将镍-铝合金的熔融颗粒喷涂到其表面上,然后从该合金中腐蚀铝先用碱性溶液(阮内镍),然后在分开的镍层的孔中沉积(或形成)一层含钴的氧化物薄层(例如,用至少一种钴盐的溶液浸渍),然后通过干燥和煅烧)。该电极有利地用作阳极,特别是用于在碱性介质中电解水:它具有降低的过电压以释放氧气。
展开▼