金属学报  2008, Vol. 44 Issue (7): 887-891

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复合型 LaNi5/Ni-S 合金镀层在碱液中的析氢反应

韩庆;陈建设;刘奎仁;魏绪钧

东北大学材料与冶金学院

Hydrogen evolution reaction on the composite LaNi5/Ni-S alloy film in alkaline medium

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东北大学

韩庆; 陈建设; 刘奎仁; 魏绪钧 . 复合型 LaNi5/Ni-S 合金镀层在碱液中的析氢反应[J]. 金属学报, 2008, 44(7): 887-891 .
, , , . Hydrogen evolution reaction on the composite LaNi5/Ni-S alloy film in alkaline medium[J]. Acta Metall Sin, 2008, 44(7): 887-891 .

摘要 参考文献 相关文章 Metrics 全文: PDF(887 KB)   摘要: 通过熔盐电解结合水溶液电沉积方法获得了复合型LaNi5/Ni-S合金镀层. Na3AlF6-La2O3 (质量比为92 : 8) 体系中的熔盐电解实验表明, 由于阴极Ni具有较强的阴极去极化能力, 即使在远未达到La析出电位的 条件下, 仍可获得LaNi$_{5}$储氢合金层. 电化学测试表明, 该复合阴极材料具有较高的电化学活性, 在80 ℃、 30%NaOH溶液中, 当阴极电流密度为150 mA cm-2时, 其析氢过电位仅为75 mV. 循环伏安及开路电位测试表明, LaNi5合金层在电解过程中可吸收一定量的氢, 在电解槽出现断电 或逆电流情况下这些吸收氢可发生放电过程, 避免阴极材料溶出, 从而为该析氢阴极提供电化学 保护. 关键词 ： 复合型LaNi5/Ni-S合金镀层,  熔盐电解     Abstract：By molten salt electrolysis combined with aquatic electrodeposition, the composite LaNi5/Ni-S film with high stability and HER activity was obtained. The results showed that in the Na3AlF6-La2O3 (92 : 8) molten salt system, although the cathodic potential is much lower than the decomposition potential of lanthanum, the LaNi5 film could be obtained due to the strong depolarization ability of Ni cathode. The composite LaNi5/Ni-S film (η150 = 75 mV, 80oC) could absorb large amount of H atoms, which would be oxidized and avoid the dissolution of the Ni-S film under the state of open-circuit effectively and prolong the lifetime of the cathode. Key words： 收稿日期: 2007-12-14      ZTFLH:  TF123.1   服务 把本文推荐给朋友 加入引用管理器 E-mail Alert RSS 作者相关文章 韩庆 陈建设 刘奎仁 魏绪钧 44.8K 链接本文: https://www.ams.org.cn/CN/      或      https://www.ams.org.cn/CN/Y2008/V44/I7/887 [1]Norsk H.Netherlands Pat,7801955,1978 [2]Hine F,Yasuda M,Watanabe M.Denki Kagaku,1979;47: 401 (日根富郎，安田正雄，渡边正男．电气化学，1979；47：401) [3]Gonsalez E R,Avaca L A,Tremiliosi-Filho G.Int J Hy- drogen Energy,1994;19:17 [4]Sabela R,Paseka I.J Appl Electrochem,1990;20:500 [5]Paseka I.Electrochim Acta,1993;38:2449 [6]de Giz M J,Ferreira M,Gonzalez E R.J Appl Electrochem, 1993;23:641 [7]Vandenborre H,Vermeiren Ph,Leysen R.Electrochim Acta,1984;29:297 [8]Wen T C,Lin S M,Tsai J M.J Appl Electrochem,1994; 24:233 [9]Valand T,Burchardt T,Grontoft T.Int J Hydrogen En- ergy,2002;27:39 [10]Xu Y H,He G R,Wang X L.Int J Hydrogen Energy,2003; 28:961 [11]Kitamura T,Iwakura C,Tamura H.Chem Left,1981:965 [12]Kitamura T,Iwakura C,Tamura H.Chem Left,1981:1755 [13]Hu W K.Int J Hydrogen Energy,2000;25:111 [14]Bocutti R,Saeki M J,Florentino A O.Int J Hydrogen Energy,2000;25:1051 [15]Han Q,Liu K R,Chen J S.Int J Hydrogen Energy,2003; 28:1207 [16]Bard A J,Fauikner L R.Electrochemical Methods Fun- damentals and Applications.2nd Ed.,New York:John Wiley & Sons,INC,2003:135 [17]Carvalho J D,Tremiliosi-Filho G,Avaca L A.In:Srini- vasan S,Wagner S,Wroblowa H,eds.,Electrode Materials and Processes .for Energy Conversion and Storage.Pen- nington:The Electrochem Soc Inc,1987:356 [18]Vandenborre H,Vermeiren P,Leysen R.Electrochim Acta, 1984;29:297 [1] 汪的华; 邱国红; 金先波; 陈政 . 直接熔盐电化学还原固态 Tb4O7-Fe2O3制备 Tb2Fe17[J]. 金属学报, 2008, 44(7): 859-862 . [2] 王旭; 翟玉春; 谢宏伟 . 熔盐电解法制备CaB6及其表征[J]. 金属学报, 2008, 44(10): 1243-1246 . Viewed Full text Abstract Cited   Shared      Discussed