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LaNi5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.
参考文献
| [1] | Norsk H.Netherlands Pat,7801955,1978 |
| [2] | Hine F,Yasuda M,Watanabe M.Denki Kagaku,1979; 47:401(日根富郎,安母正雄,渡边正男.电气化学,1979;47:401) |
| [3] | Gonsalez E R,Avaca L A,Tremiliosi-Filho G.Int J Hydrogen 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 Electroehern,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,Burehardt T,Grontoft T.Int J Hydrogen Energy,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 Lett,1981:965 |
| [12] | Kitamura T,Iwakura C,Tamura H.Chem Lett,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,Faulkner L R.Electrochemical Methods Fundamentals and Applications.2nd Ed.,New York:John Wiley & Sons,INC,2003:135 |
| [17] | Carvalho J D,Tremiliosi-Filho G,Avaca L A.In:Srinivasan S,Wagner S,Wroblowa H,eds.,Electrode Materials and Processes for Energy Conversion and Storage.Pennington:The Electrochem Soc Inc,1987:356 |
| [18] | Vandenborre H,Vermeiren P,Leysen R.Electrochim Acta,1984; 29:297 |
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