应用基于同步辐射的X射线散和吸收光谱以及TXM和TEM成像技术研究新型可充电电池正极材料

摘要：

To study a complicated system like NMC622, we need PDF for local probe。Thanks to neutron’s high sensitivity to oxygen, we were able to track theevolution of oxygen-oxygen distance during deep delithiation (0.83 Liextracted). The shortest distance observed was 2.54 , far from the distancein peroxo-like species.NMC622 has great structural stability, highly reversible structural change even for high voltage; little if any oxygen release. Stacking faults occur at highvoltage charging; Strain, or inhomogeneity builds up upon cycling.

关键词： 可充电电池 正极材料 X射线散射 吸收光谱 显微成像

作者: Enyuan Hu Xiao-Qing Yang Jue Liu Seong-Min Bak Ruoqian Lin Zulipiya Shadike Hung-Sui Lee Xuelong Wang Huolin Xin Yijin Liu Xiqian Yu Xuejie Huang Hong Li

作者单位: Chemistry Division,Brookhaven National Laboratory,Upton,NY 11973,USA CFN,Brookhaven National Laboratory,Upton,NY 11973,USA Stanford Synchrotron Radiation Light source,SLAC,Menlo Park,CA 94025,USA Institute of Physics,Chinese Academy of Science,Beijing 100190,China

会议类型: 国内会议

会议名称: CIBF2018国际先进电池前沿技术研讨会

会议地点: 深圳

会议语种:中文

页码: 1-30

在线出版日期: 2018-05-22（万方平台首次上网日期，不代表论文的发表时间）