Electrolyte ohmic heating during electrodeposition: The role of coupled kinetic-transport phenomena that lead to morphological and microstructural changes
Electrolyte ohmic heating during electrodeposition: The role of coupled kinetic-transport phenomena that lead to morphological and microstructural changes
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DOI：
10.1016/j.electacta.2023.142616
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发表时间：
2023-05
影响因子：
6.6
通讯作者：
P. Eribol;Sarath Gopalakrishnan;S. Diwakar;A. Talbi;R. Narayanan;F. Zoueshtiagh;Kirk J. Ziegler
中科院分区：
文献类型：
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作者：
P. Eribol;Sarath Gopalakrishnan;S. Diwakar;A. Talbi;R. Narayanan;F. Zoueshtiagh;Kirk J. Ziegler
了解电化学过程中电极的形态变化对许多领域都很重要。这些形态变化通常导致枝晶形成和显著的热生成，这可能对工艺，特别是电池的性能和寿命有害。采用原位红外测温和显微镜技术研究了硫酸铜微电沉积过程中温度场的变化。在一定条件下，存款的生长前沿后退，生长最快的枝晶会突然停止生长。物理化学，温度和电流变化的分析表明，许多动态现象是相关的，并与局部pH值的变化，改变化学电沉积和电位下降发生在电极上，改变周围的运输树突。
Understanding the morphological changes to the electrodes during electrochemical processes is important to many fields. These morphological changes often lead to dendrite formation and significant heat generation that can be detrimental to the process, especially the performance and lifetime of batteries. In situ infrared thermometry and microscopy are used to study the evolution of temperature profiles during the microscale electrodeposition of copper from copper sulfate. Under certain conditions, the growth front of the deposit receded and the fastest growing dendrites would suddenly stop growing. Analysis of physicochemical, temperature, and current changes show that many dynamic phenomena are correlated and associated with localized pH changes that change the chemistry of electrodeposition and potential drops occurring across the electrodes that alter the transport around dendrites.