材料科学
纳米颗粒
阳极
电解质
锂(药物)
电化学
化学工程
电池(电)
碳纤维
锂离子电池
复合数
离子
壳体(结构)
纳米技术
电极
复合材料
有机化学
医学
功率(物理)
化学
物理
物理化学
量子力学
内分泌学
工程类
作者
Guangyu Zhao,Li Zhang,Yu‐Feng Meng,Naiqing Zhang,Kening Sun
标识
DOI:10.1016/j.matlet.2013.01.073
摘要
Core–shell [email protected] nanoparticles have been obtained by heat treating the organic precursor decorated Si crystalline nanoparticles successfully. The method of decorating organic precursor by the chemical reaction is so controllable that the coated carbon shell on the Si nanoparticles is uniformly ultrathin. This ultrathin carbon shell realizes effective relief to the capacity fading of Si nanoparticles with low carbon content in the composite. Electrochemical measurements demonstrate that the core–shell [email protected] nanoparticles behave a so stable cycle performance as anode material of lithium ion batteries with a vinylene carbonate containing electrolyte, that the capacity still remains 1700 mA h g−1 after 50 cycle charge/discharge.
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