Electrochemical Potential Spectroscopy: A New Electrochemical Measurement
Electrochemical Potential Spectroscopy: A New Electrochemical Measurement
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电化学势谱：一种新的电化学测量
DOI：
10.1149/1.2129095
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发表时间：
1979
影响因子：
3.9
通讯作者：
S. Atlung
中科院分区：
文献类型：
--
作者：
T. Jacobsen;K. West;S. Atlung
描述了一种新的电化学技术，该技术涉及向电化学电池施加一系列恒电位阶跃。在每个电位阶跃上，通过让电流衰减到一个小的但有限的值，允许电池达到准开路条件。当进行小电压阶跃时，电压-电荷关系是对电池的热力学性质的高度精确和准确的近似。应用于Li-TiS 2电偶表明，在每个电压阶跃上积累的电荷类似于电化学电势谱图，这为Li~ TiS 2中的锂的结构有序提供了证据。该技术可用于研究电位相关电池动力学、表面吸附平衡和阴极材料相图。
A new electrochemical technique is described that involves applying a series of constant potential steps to an electrochemical cell. On each potential step the cell is permitted to attain quasi open-circuit conditions by letting the current decay to a small, but finite, value. When small voltage steps are made, the voltage-charge relation is a highly precise and accurate approximation to the thermodynamic properties of the cell. Application to the Li-TiS2 couple shows that the charge accumulated on each voltage step resembles an electrochemical potential spectrogram that provides evidence for the structural ordering of lithium in Li~ TiS2. The technique may be used to study the potential-dependent cell kinetics, the thermodynamzcs of adsorption on surfaces, and the phase diagrams of cathode materials.