Recently, Prof. Lin Gu, Prof. Xiaofeng Duan and Dr. Xiaoqing He at the Beijing National Laboratory for Condensed Matter Physics, The Institute of Physics, Chinese Academy of Sciences (IOP, CAS) in close collaboration with Prof. Hong Li, Prof. Yong-Sheng Hu and Prof. Liquan Chen (IOP, CAS), together with scientists from the Max Plank Institute for Solid State Research, Japan Fine Ceramic Center and The University of Tokyo, have developed an annular-bright-field scanning transmission electron microscopy, which can image lithium atoms directly in cathode materials e.g. LiFePO4 (http://pubs.acs.org/doi/abs/10.1021/ja109412x). Corresponding relationship between experimental parameters and image contrast was also discussed systematically (Mater. Express 1, 43-50, 2011).