钠离子电池硬碳负极材料研究进展

刘飞, 赵培文, 赵经香, 孙贤伟, 李苗苗, 王敬豪, 尹延鑫, 戴作强, 郑莉莉

Research progress of hard carbon anode materials for sodium ion batteries

Fei LIU, Peiwen ZHAO, Jingxiang ZHAO, Xianwei SUN, Miaomiao LI, Jinghao WANG, Yanxin YIN, Zuoqiang DAI, Lili ZHENG

图7 (a) TEGDME中硬碳在不同电流密度下循环性能[40]；(b) 碳酸盐中硬碳在不同电流密度下循环性能[40]；(c) 通过冷冻透射电镜成像PC电解质中以C/3的速率循环1次后SEI膜厚度[41]；(d) 通过冷冻透射电镜成像TEGDME电解质中以C/3的速率循环1次后SEI膜厚度[41]；(e) 不同电解质中硬碳充放电曲线[51]；(f) 基于DME和DME-0.5%VC电解质的硬碳在电流速率为1A/g下的循环性能[51]

Fig. 7 (a) Cycling performance of HC at different current densities in TEGDME[40]; (b) Cycling performance of HC at different current densities in carbonate[40]; (c) SEI film thickness after 1 cycle at C/3 rate in PC electrolyte by cryo-TEM imaging[41]; (d) SEI film thickness after 1 cycle at C/3 rate in TEGDME electrolyte by cryo-TEM imaging[41]; (e) Charge-discharge curves of hard carbon in different electrolytes[51]; (f) Cycling performance of hard carbon based on DME and DME-0.5%VC electrolyte at a current rate of 1A/g[51]