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Thermodynamic Understanding of Li-Dendrite Formation
Joule ( IF 39.8 ) Pub Date : 2020-07-24 , DOI: 10.1016/j.joule.2020.06.016
Xiangwen Gao , Ya-Nan Zhou , Duzhao Han , Jiangqi Zhou , Dezhong Zhou , Wei Tang , John B. Goodenough

Li-metal batteries have been emerging as attractive technologies for electrical energy storage and conversion by virtue of the ultrahigh theoretical specific capacity of lithium. However, the undesirable Li-dendrite growth upon prolonged cycling gives rise to thermal runaway, inducing tremendous safety concerns that impede the development of the technology. In general, Li nucleation and growth behavior significantly changes when the operating condition is modified through modulating temperature or thermodynamic energy to produce regulated lithium depositions. Herein, this perspective takes these two key factors as an example to emphasize the importance of thermodynamic understandings of the Li-dendrite issue. The key challenges and corresponding strategies for designing advanced dendrite-free Li-metal anodes with respect to thermodynamic factors are also discussed as fundamental guidance for future development.



中文翻译:

锂枝晶形成的热力学理解

锂金属电池由于锂的理论上的超高容量,已成为有吸引力的电能存储和转换技术。但是,长时间循环后不希望有的Li-枝晶生长会引起热失控,从而引起极大的安全隐患,从而阻碍了该技术的发展。通常,当通过调节温度或热力学能以调节锂的沉积来改变工作条件时,锂的成核和生长行为会发生显着变化。在此,此观点以这两个关键因素为例来强调对锂枝晶问题的热力学理解的重要性。

更新日期:2020-09-16
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