【作者】 魏国祯； 薛连杰； 柯福生； 唐康； 黄令； 孙世刚；

【Author】 WEI Guo-zhen XUE Lian-jie KE Fu-sheng TANG Kang HUANG Ling SUN Shi-gang State Key Laboratory of Physical Chemistry of Solid Surfaces,Department of Chemistry,Xiamen University,Xiamen 361005,China

【机构】 固体表面物理化学国家重点实验室,厦门大学化学化工学院化学系；

【摘要】 掺磷的锡钴合金材料能提高材料的比容量,缓冲充放电过程中活性材料的体积膨胀,并在一定程度上改善其界面成膜机制,从而提高材料的循环性能,是一种新型的锂离子电池负极材料。利用原位红外光谱研究电极材料在充放电过程中的界面反应和充放电过程,可以从分子水平观测到SEI膜(solid-electrolyte intedace film)的成膜机制和充放电中的嵌脱锂过程,进而更深入地认识这种材料的性质。更多还原

【Abstract】 P doped SnCo alloy is a new attempt to improve the capacity and cyclability of Sn-based alloy anode material In-situ microscope Fourier transform infrared reflection spectroscopy (in situ MFTIRS) was employed to study the interface and re- vealed the interfacial properties between SnCoP alloy thin film electrode and electrolyte involved in lithium ion battery during charge/discharge process at a molecule level.The formation of the SEI (solid-electrolyte interface) film was investigated,and lithium intercalation/deintercalation during the charge/discharge process of material was discussed.更多还原