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1 (a) 采用GPA方法着色后脱锂的LiCoO2正极HAADF图；(b)和(c)是黄色虚线矩形区域放大的原子级分辨TEM图；(d)和(e)是粉色虚线矩形区域放大的原子级分辨TEM图[37]；(f) 原始LCO薄膜样品的HAADF-STEM图；(g) 嵌锂后的低倍TEM图；(h)～(k) 在(g)中标记不同点的NBD图[38]

Fig. 1 (a) HAADF image of delithiated LiCoO2 cathode after coloring with GPA method, (b) and (c) are zoomed-in views of yellow, dashed-box area, (d) and (e) are zoomed-in images of pink, dashed-box area[37], (f) A HAADF-STEM image of a pristine thin film LCO piece, (g) A TEM image after lithiation acquired at a low magnification, (h)～(k) NBD patterns for different spots labeled in (g)[38]