TY - JOUR
AU1 - Luo, Lufang
AU2 - He, Jinzuo
AU3 - Yan, Xiao
AU4 - Qiu, Haodong
AU5 - Zhang, Lijuan
AB - Commercialized electrolytes for lithium-metal batteries have a maximum temperature restriction of 60 °C, which significantly restricts the use of these batteries in situations with greater temperatures. In this paper, we study the construction of a high-temperature electrolyte system for lithium-metal batteries, using 0.5 M LiODFB-EC/EMC (3:7) as the basic electrolyte system, and 1, 2, and 3 M LiTFSI were added to form electrolytes with different concentrations, to investigate the effect of LiTFSI concentration on lithium-metal batteries. The mixed lithium salts used in this system are lithium bis(trifluorosulfonyl) imide (LiTFSI) and lithium difluoro-oxalate-borate (LiODFB), with ethylene carbonate (EC) and ethyl methyl carbonate (EMC) as the mixed solvent systems. Additionally, we study the electrochemical performance at 45 °C and 70 °C. The best battery performance was achieved with batteries built with the 3.0 M LiTFSI/0.5 M LiODFB electrolyte. In the LiCoO2/Li discharge performance after 500 cycles, the battery’s discharge-specific capacity was 117.8 mAh/g, and its capacity retention rate was 82.8%. Better than previous concentration electrolyte systems, the battery constructed with this electrolyte has a greater discharge-specific capacity and cycle stability at 70 °C.
TI - High-concentration electrolytes for lithium-metal batteries operating at high temperatures
JF - Ionics
DO - 10.1007/s11581-024-06004-3
DA - 2025-05-01
UR - https://www.deepdyve.com/lp/springer-journals/high-concentration-electrolytes-for-lithium-metal-batteries-operating-IhIiw1YOCN
SP - 4227
EP - 4237
VL - 31
IS - 5
DP - DeepDyve
ER -