Investigation of solid sodium reference electrodes for solid-state electrochemical gas sensors

Investigation of solid sodium reference electrodes for solid-state electrochemical gas sensors
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固态电化学气体传感器用固体钠参比电极的研究

DOI：
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发表时间：
1993
期刊：
影响因子：
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通讯作者：
R. Huggins
R. Huggins
中科院分区：
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文献类型：
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作者：
H. Schettler;J. Liu;W. Weppner;R. Huggins

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基于固体钠离子导体（例如，Na ~+-β/β″-Al_2O_3或NASICON），并根据理论预测讨论了观测到的实验结果。通过适当的二元和三元相平衡确定确定钠的活度。发现二元体系Na-Sb和Na-Bi以及三元体系Na-M-O（M是过渡金属，Co或Ni）显示出优异的动力学性能，并且能够在较长的时间内固定良好限定的钠的化学势。一些钠参比电极甚至在空气中也是稳定的。并与以单质钠为参比电极的测定结果进行了比较。
Several types of solid reference electrodes for potentiometric gas sensors based on solid sodium ion conductors (e.g., Na+-β/β″-Alumina or NASICON) are described and the observed experimental results are discussed in view of theoretical predictions. Defined sodium activities are established by appropriate equilibria of binary and ternary phases. The binary systems Na-Sb and Na-Bi, and the ternary systems Na-M-O (M is a transition-metal, Co or Ni) were found to show excellent kinetic performance and are capable to fix the chemical potential of sodium well defined over extended periods of time. Some of the sodium reference electrodes are even stable in air. The results are compared with the application of elemental sodium as reference electrode.