Electrochemistry of Intercalation Materials Charge‐Transfer Reaction and Intercalate Diffusion in Porous Electrodes
Electrochemistry of Intercalation Materials Charge‐Transfer Reaction and Intercalate Diffusion in Porous Electrodes
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插层材料的电化学多孔电极中的电荷转移反应和插层扩散
DOI：
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发表时间：
1999
期刊：
影响因子：
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通讯作者：
B. Koch
中科院分区：
文献类型：
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作者：
M. Verbrugge;B. Koch
对于锂离子电池的研究、开发和最终制造，有必要了解限制电池性能的现象，并将这些知识融入电池设计中。虽然存在用于确定电解质相性质的方法，但用于评估电池电极材料中类似固态性质的程序更难以实施。在这项工作中推导出的微扰解被实施来确定适用于锂离子电池的含有预聚（丙烯腈）纤维的溶剂浇铸多孔电极中的嵌入扩散系数。结果表明，插层和空位对固相自由能的贡献对电极的非平衡行为有显著影响。此外，分析显示，提供洞察的过程，管理脉冲功率性能的电池的基础上插入电极（例如，锂离子和金属氢化物电池）。© 1999电化学学会。All rights reserved.
For the research, development, and eventual manufacture of lithium‐ion batteries, it is necessary to understand the phenomena limting cell performance and incorporate this knowledge into battery design. While methods exist for the determination of electrolyte‐phase properties, procedures for the assessment of analogous solid‐state properties in battery electrode materials are more difficult to implement. The perturbation solution derived in this work is implemented to determine the intercalate diffusion coefficient in a solvent‐cast porous electrode containing carbonized poly(acrylonitrile) fibers suitable for a lithium‐ion battery. It is shown that both intercalate and vacant site contributions to the excess free energy of the solid phase influence significantly the nonequilibrium behavior of the electrode. In addition, the analysis is shown to provide insight into the processes that govern the pulse‐power performance of batteries based on insertion electrodes (e.g., lithium‐ion and metal‐hydride batteries). © 1999 The Electrochemical Society. All rights reserved.