高等学校化学学报

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超重力场中水溶液的电化学反应特性

邢海青1,2, 郭占成1,3, 王志1, 王明涌1   

    1. 中国科学院过程工程研究所, 多相复杂系统国家重点实验室, 北京 100080;
    2. 中国科学院研究生院, 北京 100039;
    3. 北京科技大学, 循环与生态冶金教育部重点实验室, 北京 100083
  • 收稿日期:2006-12-14 修回日期:1900-01-01 出版日期:2007-09-10 发布日期:2007-09-10
  • 通讯作者: 郭占成

Electrochemical Behavior of Aqueous Electrochemical Reactions in Super Gravity Field

XING Hai-Qing1,2, GUO Zhan-Cheng1,3*, WANG Zhi1, WANG Ming-Yong1   

    1. State Key Laboratory of Multi-phase and Complex System, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100080, China;
    2. Graduate School of Chinese Academy of Sciences, Beijing 100039, China;
    3. School of Metallurgical and Ecological Engineering of Ministry of Education, University of Science and Technology of Beijing, Beijing 100083, China
  • Received:2006-12-14 Revised:1900-01-01 Online:2007-09-10 Published:2007-09-10
  • Contact: GUO Zhan-Cheng

摘要: 以Fe3+/Fe2+电对体系和铁氰酸根离子为研究对象, 分别采用循环伏安法、线性扫描伏安法和计时电流法等考察了在超重力条件下Fe3+/Fe2+电对体系和铁氰化钾离子的电化学行为, 为认识和发展超重力场中电化学反应过程的研究提供了一定的理论及实验依据.

关键词: 超重力场, 离子扩散, 平衡电极电位, 电化学行为

Abstract: The electrochemical behavior of Fe3+/Fe2+system and ferricyanide ion were investigated by cyclic voltammetry, linear sweep voltammetry, and chronoamperometry in the super gravity field. The results show that diffusion coefficient of ferricyanide ion increased in the super gravity field, and diffusion coefficient under gravity coefficient 125 is almost two times of that in the natural gravity field. The peaks of oxidation and the reduction of Fe3+/Fe2+ disappeared gradually with the increase of the gravity coefficients, and the limiting current densities appeared at 0.10 and 0.80 V(vs. SCE), with increasing super gravity coefficients. When G=30, the limiting current density is 0.100 A/cm2 at 0.10 V, while it is up to 0.196 A/cm2 under G=280.

Key words: Super gravity field, Ion diffusion, Equilibrium electrode potential, Electrochemical behavior

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