POTENTIAL DROPS DUE TO AN ATTACHED BUBBLE ON A GAS-EVOLVING ELECTRODE
POTENTIAL DROPS DUE TO AN ATTACHED BUBBLE ON A GAS-EVOLVING ELECTRODE
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DOI：
10.1007/bf01320636
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发表时间：
1989-09-01
影响因子：
2.9
通讯作者：
SAHAR, A
中科院分区：
文献类型：
--
作者：
GABRIELLI, C;HUET, F;SAHAR, A
它显示了如何分离和估计由电极上的附加气泡引起的过电位的各种组成部分。通过考虑由阻抗测量获得的由于气泡电极表面存在的电阻增量，可以确定控制气体演化的主要电位分布。建立了测量过电位与气泡直径之间的关系。在溶液中溶解气体扩散限制气泡生长的情况下，模拟了气泡生长引起的过电位的时间演变。与以往的实验结果一致，发现时间呈线性变化。
It is shown how the various components of the overpotential due to an attached bubble on an electrode can be separated and estimated. By considering the resistance increments due to the presence on the electrode surface of a bubble, obtained from impedance measurements, it is possible to determine the predominant potential distribution which controls the gas evolution. A relationship between the measured overpotential and the diameter of the bubble is established. The time evolution of the overpotential due to a growing bubble is modelled in the case of the limitation of the bubble growth by dissolved gas diffusion in the solution. In agreement with previous experimental results a linear time variation is found.