硫系电解液添加剂对镍钴锰酸锂//石墨锂离子电池性能的影响

夏恒恒, 梁鹏程, 安仲勋

Effects of sulfur-containing electrolyte additives on the performance of lithium nickel cobalt manganese oxide//graphite Li-ion batteries

Hengheng XIA, Pengcheng LIANG, Zhongxun AN

图5 硫系添加剂与VC进行1/1(质量比)复配的性能：(a) 首次库仑效率(ICE)及放电容量(IDC)；(b) 不同电流下的放电容量及DCR；(c) 高温存储前后的容量保持率、DCR变化率和OCV保持率；(d) 循环1000次后ES和VC/ES添加剂的胀气情况；(e) -30 ℃环境温度下的放电容量及容量保持率；(f) 5 C倍率下的循环性能

Fig. 5 Performance of mixed additives with sulfur-containing additives and VC in a 1/1 mass ratio: (a) First coulombic efficiency (ICE) and discharged capacity (IDC); (b) Discharged capacity and DCR at different currents; (c) Capacity retention, DCR change and OCV retention before and after high temperature storage; (d) Cell flatulence images of ES and VC/ES additives after 1000 cycles; (e) Discharged capacity and capacity retention at -30 ℃ ambient temperature; (f) Cycle performance at the rate of 5 C