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3 单组分添加剂在NCM//G锂离子电池中的性能：(a) 不同温度下的放电容量；(b) -30 ℃低温下的放电曲线及初始DCR(插图)；(c) 65 ℃高温存储过程中的电压变化和存储前后的胀气率(插图)；(d) 高温存储前后的容量保持率和DCR变化率；(e) 5 C(2.8～4.2 V)循环中的放电容量及(f) 能量效率

Fig. 3 Performance of NCM//G Li-ion batteries with various single-component electrolyte additive: (a) Discharged capacity at different temperatures; (b) Discharging curves and initial DCR (illustrated) at -30 ℃; (c) OCV variation curves and cell flatulence rates before and after high-temperature storage (illustrated); (d) Capacity retention and DCR variation before and after high-temperature storage; (e) Discharged capacity and (f) Energy efficiency during the cycles at 5 C (2.8–4.2 V)