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Electrolytic cell with improved hydrogen evolution cathode
Electrolytic cell with improved hydrogen evolution cathode
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机译:具有改进的析氢阴极的电解池
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摘要
An electrolytic cell having an improved hydrogen evolution cathode, said cathode being characterized by a conductive metal core and an integral Raney-type catalytic surface predominantly derived from an adherent ternary aluminide Beta structured intermetallic crystalline precursory outer portion of the metal core is disclosed. The precursory outer portion preferably has molybdenum and titanium added to give a precursor alloy having the formula Ni.sub.x Mo.sub.y Ti.sub.z Al.sub.3 where x is within the range of from about 75 to about 94 weight percent, y is within the range of from about 5 to about 20 weight percent and z is within the range of from about 1 to about 5 weight percent of the Ni-Mo- Ti portion of the alloy. Also disclosed is a method of producing a low overvoltage cathode. The method includes the steps of taking a Ni-Mo-Ti core or substrate having about 5-20 weight percentage of Mo and about 1-5 weight percent Ti and coating it with aluminum, heat treating to form a Ni-Mo-Ti-Al quaternary alloy with mostly NiAl.sub.3 (ordered orthorhombic) crystal structure and then leaching out the Al to produce a ternary NiMoTi alloy Raney surface. A method for utilizing said low overvoltage cathode for producing hydrogen and an exemplary cell having a permselective membrane therein for so doing are also disclosed.
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机译:本发明公开了一种具有改进的氢逸出阴极的电解池,所述阴极的特征在于导电金属芯和整体的阮内型催化表面,所述阮内型催化表面主要源自金属芯的粘附的三元铝化物β-结构的金属间结晶前体外部。前体外部优选具有钼和钛,以得到具有式Ni x Mo y Ti z z Al 3的前体合金,其中x在约75至约70的范围内。 94wt%,y在合金的Ni-Mo-Ti部分的约5至约20wt%的范围内,z在约1至约5wt%的范围内。还公开了一种生产低过电压阴极的方法。该方法包括以下步骤:取出具有约5-20重量%的Mo和约1-5重量%的Ti的Ni-Mo-Ti芯或衬底,并用铝涂覆,热处理以形成Ni-Mo-Ti-。具有主要为NiAl.sub.3(有序斜方晶)晶体结构的Al四元合金,然后浸出Al以产生NiMoTi三元合金阮内表面。还公开了一种利用所述低过电压阴极产生氢的方法,以及其中具有渗透选择性膜的示例性电池。
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