含钨的多元复合析氢电极 |
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引用本文: | 张季爽 李青莲. 含钨的多元复合析氢电极[J]. 湖南大学学报(自然科学版), 1993, 20(5): 46-49 |
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作者姓名: | 张季爽 李青莲 |
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作者单位: | 湖南大学化学化工系,湖南大学化学化工系,湖南大学化学化工系,河南省教育学院,湖南大学化学化工系 |
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摘 要: | 用复合镀法制得Ni-W-WC-WO3复合电极,在0.5mol/LH2SO4中的氢超电势比软钢降低280mV,i0提高三个数量级,电极表面粗糙度为Ni电极的三倍。在300mA/cm^2的大电流密度下,进行的长期恒电流电解试验表明电极性能稳定。XPS分析证明电极表面主要成分为Ni,W,WC,WO3等。
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关 键 词: | 氢电极 电催化 氢 钨 析出 |
Polybasic Composite Cathode of Wolfram-Bearing for Hydrogen Evolution Reaction |
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Affiliation: | Department of Chemistry and Chemical Engineering |
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Abstract: | The Ni-W-WC-WO_3 composite cathode was obtained by electroplating on nickel cathode substrate. Its exchange current density i_0 greatly increases and its hydrogen overvoltage greatly decreases than Ni and Fe. The surface area of Ni-W-WC-WO_3 cathode is two fold more than that of the Ni electrode. Electrolytic experiment by high current density (300 mA/cm~2) showed that the cathode had steady activity. XPS analysis indicated that the component of electrode surface are Ni,W,WC,N,WO_3 etc. |
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Keywords: | hydrogen electrode electronic spectrum electro-catalysis XPS |
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