电极材料储锂行为及其机制的原位透射电镜研究进展

柯承志, 肖本胜, 李苗, 陆敬予, 何洋, 张力, 张桥保

Research progress in understanding of lithium storage behavior and reaction mechanism of electrode materials through in situ transmission electron microscopy

Chengzhi KE, Bensheng XIAO, Miao LI, Jingyu LU, Yang HE, Li ZHANG, Qiaobao ZHANG

图2 (a)为原位TEM纳米电池示意图；(b)为FePO4和固态电解质Li/Li2O接触后的TEM图；(c)～(i) 在嵌锂时FePO4随时间变化的TEM图[42]；(j)～(l)为LFP纳米线在嵌锂过程中的微观结构演变图；(m)、(n) 在(j)、(k)中红色虚线矩形图像的放大图；(o)和(p)为LFP和Li0.5FePO4的TEM模拟图[43]

Fig. 2 (a) Schematic diagram of in situ TEM setup with nanobattery, (b) A TEM image of FePO4 particle after its contact with Li/Li2O solid electrolyte, (c)～(i) Time-lapse TEM images of FePO4 particle during lithiation[42], (j)～(l) Microstructural evolution of a LFP nanowire during lithiation, (m)、(n) Magnified images of dotted red rectangle region in (j)、(k), respectively. Simulated TEM images of (o) LiFePO4 and (p) Li0.5FePO4[43]