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Deciphering Chemical/Electrochemical Compatibility of Li3InCl6 in 5.2 V High-Voltage LiCoO2 All-Solid-State Batteries
ACS Energy Letters ( IF 19.3 ) Pub Date : 2024-08-21 , DOI: 10.1021/acsenergylett.4c01472 Zhen Wang 1 , Jiewen Tan 1 , Zhanhui Jia 2 , Jiawu Cui 1 , Xiaowei Wang 3 , Chengyong Shu 1 , Xiangwen Gao 4 , Yuping Wu 5 , Wei Tang 1
ACS Energy Letters ( IF 19.3 ) Pub Date : 2024-08-21 , DOI: 10.1021/acsenergylett.4c01472 Zhen Wang 1 , Jiewen Tan 1 , Zhanhui Jia 2 , Jiawu Cui 1 , Xiaowei Wang 3 , Chengyong Shu 1 , Xiangwen Gao 4 , Yuping Wu 5 , Wei Tang 1
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Large interfacial resistance is a widely recognized impediment to the advancement of high-voltage, all-solid-state batteries. However, a comprehensive understanding of the fundamental cause behind the interfacial resistance between solid electrolytes and typical layered oxide cathodes has not yet been achieved. Here, we investigated the high-voltage stability of Li3InCl6 and elucidated the underlying interfacial electrochemical reactions between LiCoO2 and Li3InCl6. The pairing of Li3InCl6 with LiCoO2 exhibited a superior capacity retention of 73.6% even at 5.2 V, much higher than 28.2% charged at 4.6 V in lithium-ion batteries after 70 cycles. The enhanced high-voltage stability of ASSBs is attributed to the stable interface formed between LiCoO2 and Li3InCl6 and the reinforced surface and bulk structure stability. On the other hand, the ultrahigh voltage still causes the partial decomposition of Li3InCl6 and generates interfacial compounds such as InClO and cobalt and indium chlorides/oxides.
中文翻译：
解读 5.2 V 高压 LiCoO2 全固态电池中 Li3InCl6 的化学/电化学兼容性
大界面电阻是高压全固态电池发展的一个广泛公认的障碍。然而，尚未全面了解固体电解质与典型层状氧化物正极之间界面电阻背后的根本原因。在这里，我们研究了Li 3 InCl 6的高电压稳定性，并阐明了LiCoO 2和Li 3 InCl 6之间潜在的界面电化学反应。 Li 3 InCl 6与LiCoO 2的配对即使在5.2 V下也表现出73.6%的优异容量保持率，远高于锂离子电池在70次循环后在4.6 V下充电的28.2%。 ASSB增强的高压稳定性归因于LiCoO 2和Li 3 InCl 6之间形成的稳定界面以及增强的表面和体结构稳定性。另一方面，超高电压仍然引起Li 3 InCl 6的部分分解并生成界面化合物如InClO以及钴和铟的氯化物/氧化物。
更新日期：2024-08-21
中文翻译：
解读 5.2 V 高压 LiCoO2 全固态电池中 Li3InCl6 的化学/电化学兼容性
大界面电阻是高压全固态电池发展的一个广泛公认的障碍。然而，尚未全面了解固体电解质与典型层状氧化物正极之间界面电阻背后的根本原因。在这里，我们研究了Li 3 InCl 6的高电压稳定性，并阐明了LiCoO 2和Li 3 InCl 6之间潜在的界面电化学反应。 Li 3 InCl 6与LiCoO 2的配对即使在5.2 V下也表现出73.6%的优异容量保持率，远高于锂离子电池在70次循环后在4.6 V下充电的28.2%。 ASSB增强的高压稳定性归因于LiCoO 2和Li 3 InCl 6之间形成的稳定界面以及增强的表面和体结构稳定性。另一方面，超高电压仍然引起Li 3 InCl 6的部分分解并生成界面化合物如InClO以及钴和铟的氯化物/氧化物。
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