多收费
阳极
石墨
荷电状态
电池(电)
电极
中子衍射
锂(药物)
离子
锂离子电池
材料科学
相(物质)
化学
分析化学(期刊)
复合材料
热力学
结晶学
物理
晶体结构
物理化学
功率(物理)
有机化学
医学
内分泌学
作者
Neeraj Sharma,Vanessa K. Peterson
标识
DOI:10.1016/j.jpowsour.2012.12.019
摘要
In situ neutron powder diffraction measurements of a commercial lithium-ion battery reveal perturbations to the phase evolution of the LixC6 electrode caused by overcharge. Above ∼4.5 V the anode is entirely composed of LiC6. During discharge from the post-overcharged state LiC6 persists to the 90% discharge state, compared with its persistence to the 27% discharge state during conventional cycling. At the completely discharged state the post-overcharged anode is a mixture of LiC12, LiC18, and graphite, while the conventionally cycled anode is composed of graphite alone. The phase evolution of a post-overcharged battery during charge also differs relative to conventional cycling, most noticeably until the 9% state of charge.
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