金属学报  1983, Vol. 19 Issue (3): 72-76

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关于熔盐中固态金属的零电荷电势

彭瑞伍;张俊岳

中国科学院上海冶金研究所;中国科学院上海冶金研究所

ON THE ZERO CHARGE POTENTIALS OF SOLID METAL ELECTRODES IN MOLTEN SALT

by PENG Ruiwu; ZHANG Junyue (Shanghai Institute of Metallurgy; Academia Sinica)

彭瑞伍;张俊岳. 关于熔盐中固态金属的零电荷电势[J]. 金属学报, 1983, 19(3): 72-76.
, . ON THE ZERO CHARGE POTENTIALS OF SOLID METAL ELECTRODES IN MOLTEN SALT[J]. Acta Metall Sin, 1983, 19(3): 72-76.

摘要 参考文献 相关文章 Metrics 全文: PDF(403 KB)   摘要: 本文用交流电桥法测定了450℃时LiCl-KCl熔盐中某些固态金属的双层电容(C)和电压(V)的关系。C-V曲线的最低点估计了Pt,Ag,Cu和Al等四种金属的零电荷电势,它们分别为+0.2,-0.4,-0.6和1.0V。 把本文测得的450℃时LiCl-KCl熔盐中四种金属的零电荷电势(ε),和文献中700℃时NaCl-KCl熔盐中的结果对应于各金属的电离自由能(△Z_2)作图,可得一直线。它平行于水溶液中的相应直线,并可以下式表示: ε=0.305(△Z_2/q)+A 这一结果表明,在二种氯化物熔盐中同种金属的零电荷电势无明显差别,和不同金属的零电荷电势之间的差别与水溶液中相似。因此,可以认为,熔盐中固态金属的零电荷电势仅与金属的本性有关。 Abstract：The double layer capacitances and zero charge potentials of certain solid metal electrodes in LiCl-KCl melts at 450℃ have been measured by an A. C. bridge method. The zero charge potentials, ε, for Pt, Ag, Cu and Al electrodes are +0.2, -0.4, -0.6 and -1.0 V respectively which was estimated by the minima of C-V curves. If these data together with selected ones from published works in NaCl-KCl melt at 700℃ plotted against their own ionization free energy, △Z_2, a straight line, paralleled that in aqueous solution, may be drawn and expressed as:ε=0.305(△Z_2/q)+Awhere q——1 mole electron charge and A——constant.It indicates that the zero charge potentials between two chlorides molten salt are alike of same solid metals but differ of different ones, and their difference is similar to that in aqueous solution. Thus, it seems to be proposed that the zero charge potentials of the solid metals in molten salts are only determined by the nature of metals themself. 收稿日期: 1983-03-18      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 彭瑞伍 张俊岳 44.8K 链接本文: https://www.ams.org.cn/CN/      或      https://www.ams.org.cn/CN/Y1983/V19/I3/72 1 #12 2 #12 3 Imman, D.; Graves, A. D.; Sethi, R. S., Eletrochemistry, Vol. 1, A Review of the Literature, Alden and Mowbray Ltd, 1970, p. 166． 4 #12 5 彭瑞伍;张俊岳,全国第一次冶金过程物理化学学术报告会论文集,上海科学技术出版社,1965,p.528． 6 Hill, G. J.; Johnson, K. E., J. Electrochem Soc., 108 (1961) , 1013． 7 Blander, M., Molten Salts Chemistry, Interscience Publ., 1964, p. 715． 8 Ukshe, E. A.; Bukuh, N. G.; Leik, S. D. I.; Fumkin, A. N., Electrochem. Acta, 9 (1964) , 431． 9 #12 10 Handbook of Chemistry and Physics, 58th ed., Ed. Robert, C. W., Cleveland, Ohio, 1977, p. E81-81． 11 #12 12 Peng Ruiwu (彭瑞伍); Pang Yongxou (逄永秀); Chen Tzuyao (陈自姚); Zhang Juyue (张俊岳), Preprint of First China-USA Bilateral Metallurgical Conf., Beijing, China, 1981, p. 108． 13 熔盐电化学,彭瑞伍译,上海科学技术出版社,1964． p.200． No related articles found! Viewed Full text Abstract Cited   Shared      Discussed