Dual-Halide Interphase Enabling High-Performance Lithium Metal Batteries in Wide-Temperature Range

作者：Ao Sun, Haifeng Tu, Zhengguang Sun, Zhigang He, Yuchen Wang, Jian Wang, Yuting Zheng, Fengyi Zhu, Lu Wang, Farwa Mushtaq, Pan Xue, Jun Liu, Meinan Liu · 发表于：ACS Energy Letters · 年份：2024 · DOI：10.1021/acsenergylett.4c00548 · 被引用次数：51 · 研究领域：Advancements in Battery Materials、Advanced Battery Materials and Technologies、Advanced Battery Technologies Research

Robust lithium-ion diffusion kinetics enable superior battery performance even under harsher conditions, but the complex processes containing transport via liquid, interphase, and solid phases make it challenging. Herein, a dual halide-based electrode/electrolyte interphase (EEI) strategy is proposed to boost the Li + ion diffusion kinetics through rational design of electrolyte. This dual-halide EEI not only accelerates interfacial Li + diffusion but also protects electrodes from taking side reactions under high-voltage and harsh temperatures. Benefiting from these features, the Li/LiCoO 2 cells deliver an impressive performance at high-voltage window 4.5 V (209 mAh g –1, 95.2% capacity retention after 100 cycles) and wide temperatures (98.1% capacity retention at 60 °C after 100 cycles; 87.7% capacity retention at −20 °C after 20 cycles). These results well demonstrate the efficiency of this dual halide EEI, which empowers lithium metal batteries toward practical applications.