硅基负极与电解液化学反应的分析与抑制策略

于春辉, 何姿颖, 张晨曦, 林贤清, 肖哲熙, 魏飞

The analyses and suppressing strategies of silicon anode with the electrolyte

YU Chunhui, HE Ziying, ZHANG Chenxi, LIN Xianqing, XIAO Zhexi, WEI Fei

图7 Si@C和Si@TiN循环前后对比。(a) Si@C循环之前的SEM；(b) Si@C循环前的截面图；(c) Si@C循环5圈之后的SEM；(d) Si@C循环5圈之后的截面图；(e) Si@TiN循环之前的SEM；(f) Si@TiN 循环前的截面图；(g) Si@TiN循环5圈之后的SEM；(h) Si@TiN循环5圈之后的截面图；(i) Si@C循环5圈后100圈后的XPS结果对比；(g)Si@TiN循环5圈后100圈后的XPS结果对比；(k) Si@C循环5圈后100圈后的各组分结果对比；(l)Si@TiN循环5圈后100圈后的各组分结果对比

Fig. 7 The Comparison of Si@C and Si@TiN after different cycles. (a) SEM image of fresh Si@C; (b) SEM image of Si@C after 5 cycles; (c) Top-view SEM image of fresh Si@C; (d) Top-view SEM image of Si@C after 5 cycles; (e) SEM image of fresh Si@TiN; (f) SEM image of Si@TiN after 5 cycles; (g) Top-view SEM image of fresh Si@TiN; (h) Top-view SEM image of Si@C after 5 cycles; (i) XPS data of Si@C after different cycles; (j) XPS data of Si@TiN after different cycles; (k) Relative percentage of different components for Si@C; (l) Relative percentage of different components for Si@TiN