Single Nanowire Electrode Electrochemistry of Silicon Anode by in Situ Atomic Force Microscopy: Solid Electrolyte lnterphase Growth and Mechanical Properties
Single Nanowire Electrode Electrochemistry of Silicon Anode by in Situ Atomic Force Microscopy: Solid Electrolyte lnterphase Growth and Mechanical Properties
复制标题
原位原子力显微镜下硅阳极的单纳米线电极电化学：固体电解质界面生长和机械性能。
DOI：
10.1021/am505847s
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发表时间：
2014-11-26
影响因子：
9.5
通讯作者：
Wan, Li-Jun
中科院分区：
文献类型：
--
作者：
Liu, Xing-Rui;Deng, Xin;Wan, Li-Jun
Silicon nanowires (SiNWs) have attracted great attention as promising anode materials for lithium ion batteries (LIBs) on account of their high capacity and improved cyclability compared with bulk silicon. The interface behavior, especially the solid electrolyte interphase (SEI), plays a significant role in the performance and stability of the electrodes. We report herein an in situ single nanowire atomic force microscopy (AFM) method to investigate the interface electrochemistry of silicon nanowire (SiNW) electrode. The morphology and Young's modulus of the individual SiNW anode surface during the SEI growth were quantitatively tracked. Three distinct stages of the SEI formation on the SiNW anode were observed. On the basis of the potential-dependent morphology and Young's modulus evolution of SEI, a mixture-packing structural model was proposed for the SEI film on SiNW anode.
