高比能二次电池正极材料的X射线谱学研究进展

陈淑媛, 程晨, 夏啸, 鞠焕鑫, 张亮

Research progress in the X-ray spectroscopy investigation of cathode materials for high-energy-density secondary batteries

Shuyuan CHEN, Chen CHENG, Xiao XIA, Huanxin JU, Liang ZHANG

图3 (a) 三种电解液锂盐（LiFSI、LiTFSI和LiPF6 ）的XPS谱图[58]；(b) 锂化石墨负极截面的Li 1s XPS化学态影像[61]； (c) Ar离子溅射导致LiOH、Li2CO3 和锂片成分分解对比结果[62]；(d) 原位XPS电池在极化条件下锂/电解质界面处C 1s、N 1s、Li 1s、F 1s、S 2p和O 1s谱图[63]

Fig. 3 (a) X-ray photoelectron spectra of pristine salt films precipitated from liquid electrolytes (LiFSI、LiTFSI and LiPF6)[58]; (b) XPS chemical state mappings of Li 1s in the cross section of lithiated graphite anodes[61]; (c) comparison of the decomposition induced by argon sputtering for a Li2CO3-reference, a LiOH-reference and a lithium surface[62]; (d) C 1s, N 1s, Li 1s, F 1s, S 2p, and O 1s recorded at the interface Li/electrolyte during the polarization in the operando XPS cell[63]