溶剂化
磷酸三甲酯
剥脱关节
电解质
易燃液体
可燃性
石墨
化学
电池(电)
无机化学
溶剂
材料科学
电化学
化学工程
快离子导体
储能
阴极
锂(药物)
纳米技术
磷酸盐
电极
有机化学
物理化学
石墨烯
功率(物理)
内分泌学
工程类
物理
医学
量子力学
作者
Hao Jia,Yaobin Xu,Xianhui Zhang,Sarah D. Burton,Peiyuan Gao,Bethany E. Matthews,Mark H. Engelhard,Kee Sung Han,Lirong Zhong,Chongmin Wang,Wu Xu
标识
DOI:10.1002/ange.202102403
摘要
Abstract Despite being an effective flame retardant, trimethyl phosphate (TMP a ) is generally considered as an unqualified solvent for fabricating electrolytes used in graphite (Gr)‐based lithium‐ion batteries as it readily leads to Gr exfoliation and cell failure. In this work, by adopting the unique solvation structure of localized high‐concentration electrolyte (LHCE) to TMP a and tuning the composition of the solvation sheaths via electrolyte additives, excellent electrochemical performance can be achieved with TMP a ‐based electrolytes in Gr∥LiNi 0.8 Mn 0.1 Co 0.1 O 2 cells. After 500 charge/discharge cycles within the voltage range of 2.5–4.4 V, the batteries containing the TMP a ‐based LHCE with a proper additive can achieve a capacity retention of 85.4 %, being significantly higher than cells using a LiPF 6 ‐organocarbonates baseline electrolyte (75.2 %). Meanwhile, due to the flame retarding effect of TMP a , TMP a ‐based LHCEs exhibit significantly reduced flammability compared with the conventional LiPF 6 ‐organocarbonates electrolyte.
科研通智能强力驱动
Strongly Powered by AbleSci AI