锂对称电池中锂枝突刺穿隔膜诱导的恒流充放电测试问题

IF 2.4 4区化学 Q3 CHEMISTRY, PHYSICAL

Ionics Pub Date : 2023-09-18 DOI:10.1007/s11581-023-05223-4

Yao Li, Jin Long, Yun Liang, Jian Hu

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引用次数: 0

摘要

在恒电流充电/放电过程中，由于锂枝晶刺穿隔膜而导致内部短路的锂对称电池的过电位非常低，并且过电位曲线显示出与测试电流成比例的没有波动的直线。因此，在对锂对称电池进行恒流充电/放电测试时，需要特别注意短路现象的存在，以避免将短路后的低过电位错误地归因于电池的“优异”Li+传输和电化学反应动力学。

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Lithium dendrites puncturing separator induced galvanostatic charge/discharge test problem in Li-symmetric cells

The overpotential of Li-symmetric cells with internal short circuits caused by lithium dendrites puncturing the separator during galvanostatic charge/discharge is very low and the overpotential curve shows a straight line without fluctuations, proportional to the test current. Therefore, during galvanostatic charge/discharge testing of Li-symmetric cells, special attention needs to be paid to the presence of short-circuit phenomena to avoid incorrectly attributing the low overpotential after a short circuit to the “excellent” Li⁺ transport and electrochemical reaction kinetics of the cells.

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来源期刊

Ionics 化学-电化学

CiteScore

5.30

自引率

7.10%

发文量

427

审稿时长

2.2 months

期刊介绍： Ionics is publishing original results in the fields of science and technology of ionic motion. This includes theoretical, experimental and practical work on electrolytes, electrode, ionic/electronic interfaces, ionic transport aspects of corrosion, galvanic cells, e.g. for thermodynamic and kinetic studies, batteries, fuel cells, sensors and electrochromics. Fast solid ionic conductors are presently providing new opportunities in view of several advantages, in addition to conventional liquid electrolytes.