Effect of junction potential on the EMF of bielectrolyte solid-state sensors

Fushen Li, Hui Xia, Ling Wang, Yanhong Zhang, Lifen Li

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    Cite this article as:

    Fushen Li, Hui Xia, Ling Wang, Yanhong Zhang, and Lifen Li, Effect of junction potential on the EMF of bielectrolyte solid-state sensors, J. Univ. Sci. Technol. Beijing , 12(2005), No. 1, pp.81-84.
    Fushen Li, Hui Xia, Ling Wang, Yanhong Zhang, and Lifen Li, Effect of junction potential on the EMF of bielectrolyte solid-state sensors, J. Univ. Sci. Technol. Beijing , 12(2005), No. 1, pp.81-84.
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    Effect of junction potential on the EMF of bielectrolyte solid-state sensors

    • Materials Science and Engineering School, University of Science and Technology Beijing, Beijing 100083, China

    基金项目: 

    This work was financially supported by the National Natural Science Foundation of China (No.50272009) and the Special Foundation of the Education Ministry of China (No.20020008003).

      通信作者:

      Fushen Li E-mail: lifsh_ustb@163.com

    中文摘要

    The EMF (electromotive force) expressions of bielectrolyte solid-state sensors derived from classical thermodynamics are not rigorous. They are only applicable in some special situations. In order to expand their applicable scope, they should be derived from irreversible thermodynamics theory. There is a junction potential term in the EMF equations of double solid electrolyte sensors derived from irreversible thermodynamics. The junction potential involves the ion transference numbers and the electron transference numbers of two kinds of solid electrolytes. When the transference numbers of reaction ions in the two solid electrolytes equal 1 only,the junction potential term is zero and two types of EMF equations become the same.

     

    Materials

    Effect of junction potential on the EMF of bielectrolyte solid-state sensors

    Author Affilications

      • Materials Science and Engineering School, University of Science and Technology Beijing, Beijing 100083, China

    • Funds: 

      This work was financially supported by the National Natural Science Foundation of China (No.50272009) and the Special Foundation of the Education Ministry of China (No.20020008003).

    • Received: 10 October 2003;
    The EMF (electromotive force) expressions of bielectrolyte solid-state sensors derived from classical thermodynamics are not rigorous. They are only applicable in some special situations. In order to expand their applicable scope, they should be derived from irreversible thermodynamics theory. There is a junction potential term in the EMF equations of double solid electrolyte sensors derived from irreversible thermodynamics. The junction potential involves the ion transference numbers and the electron transference numbers of two kinds of solid electrolytes. When the transference numbers of reaction ions in the two solid electrolytes equal 1 only,the junction potential term is zero and two types of EMF equations become the same.

     

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