锂离子电池电极材料固体核磁共振研究进展

Progress in Solid-State NMR Studies of Electrode Materials for Lithium Ion Batteries

对于研究材料的结构变化和考察原子所处的化学环境 ,固体核磁共振技术是一种有效的手段。通过6 Li和7Li核磁共振谱的变化 ,可以清楚地了解锂离子电池电极材料中 Li与邻近金属或碳原子的配位情况及在充放电过程中对应于锂离子嵌 /脱过程中材料的结构变化 ,对于研究电极材料的电化学性能有重要的意义。本文综述了固体

Solid-state NMR is the effective technique for the study of local structural changes and chemical environment around the atoms which monitor atomic environments by varying adjacent metal or carbon content. Based on the changes of the Li-6,Li-7 NMR spectrum, the coordinating condition of lithium with the neighbor metal atoms and the structural changes of the materials during the charge/discharge cycle can be clearly identified. The developments in the micro-structural analysis of the electrode materials and mechanistic study of Li+ intercalation into a various of materials by using solid NMR techniques were reviewed.