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Correlating the Potential-Holding Formation Protocol of Solid–Electrolyte Interphases with Improving Calendar Aging on Lithium Metal Anode
ACS Energy Letters ( IF 19.3 ) Pub Date : 2023-10-18 , DOI: 10.1021/acsenergylett.3c01887 Mengyuan Zhou 1 , Maoyuan Li 1 , Yaqi Liao 1 , Longhui Li 1 , Ruoyu Xiong 1 , Guancheng Shen 1 , Taolin Lu 2, 3 , Shaohua Cui 4 , Guang Feng 5 , Jing-Ying Xie 2, 3 , Huamin Zhou 1 , Yun Zhang 1
ACS Energy Letters ( IF 19.3 ) Pub Date : 2023-10-18 , DOI: 10.1021/acsenergylett.3c01887 Mengyuan Zhou 1 , Maoyuan Li 1 , Yaqi Liao 1 , Longhui Li 1 , Ruoyu Xiong 1 , Guancheng Shen 1 , Taolin Lu 2, 3 , Shaohua Cui 4 , Guang Feng 5 , Jing-Ying Xie 2, 3 , Huamin Zhou 1 , Yun Zhang 1
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Calendar aging of lithium metal anodes (LMAs) is both ubiquitous and crucial in practical applications, representing an emerging and non-negligible issue. Herein, the controlled potential-holding method (CPHM) is performed to correlate solid–electrolyte interphase (SEI) formation protocols with calendar aging improvements. By identifying the distinctive decomposition potentials of anions and solvents in various electrolytes, holding the decomposition potential of anions promotes the preferential anion reduction to form the inorganic anion-derived SEI. Based on the electrochemical–mechanical model, the SEI formed via CPHM effectively prolongs the interface failure and facilitates uniform Li deposition, thereby mitigating the chemical corrosion during calendar aging. Furthermore, the synergistic effects of the stable SEI and uniform Li deposition benefit highly reversible Li plating/stripping, with a prolonged ∼70% longer lifespan after calendar aging. Overall, this study sheds light on improving calendar aging through regulating SEI formation, thereby paving the way for the practical adoption of LMAs.
中文翻译：
将固体电解质界面的保电形成协议与改善锂金属阳极的日历老化相关联
锂金属阳极（LMA）的日历老化在实际应用中普遍存在且至关重要，是一个新兴且不可忽视的问题。在此，采用受控电位保持方法（CPHM）将固体电解质界面（SEI）形成方案与日历老化改进相关联。通过识别各种电解质中阴离子和溶剂的独特分解电位，保持阴离子的分解电位可以促进阴离子优先还原，形成无机阴离子衍生的SEI。基于电化学-力学模型，通过CPHM形成的SEI有效地延长了界面失效并促进均匀的锂沉积，从而减轻了日历老化过程中的化学腐蚀。此外，稳定的SEI和均匀的锂沉积的协同效应有利于高度可逆的锂沉积/剥离，在日历老化后寿命延长约70%。总体而言，这项研究揭示了通过调节 SEI 形成来改善日历老化，从而为 LMA 的实际采用铺平道路。
更新日期：2023-10-18
中文翻译：
将固体电解质界面的保电形成协议与改善锂金属阳极的日历老化相关联
锂金属阳极（LMA）的日历老化在实际应用中普遍存在且至关重要，是一个新兴且不可忽视的问题。在此，采用受控电位保持方法（CPHM）将固体电解质界面（SEI）形成方案与日历老化改进相关联。通过识别各种电解质中阴离子和溶剂的独特分解电位，保持阴离子的分解电位可以促进阴离子优先还原，形成无机阴离子衍生的SEI。基于电化学-力学模型，通过CPHM形成的SEI有效地延长了界面失效并促进均匀的锂沉积，从而减轻了日历老化过程中的化学腐蚀。此外，稳定的SEI和均匀的锂沉积的协同效应有利于高度可逆的锂沉积/剥离，在日历老化后寿命延长约70%。总体而言，这项研究揭示了通过调节 SEI 形成来改善日历老化，从而为 LMA 的实际采用铺平道路。
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