石墨烯
电解质
材料科学
锂(药物)
阳极
复合数
化学工程
介电谱
电化学
电池(电)
重量分析
锂电池
锂离子电池
碳酸丙烯酯
无机化学
离子
化学
复合材料
纳米技术
电极
有机化学
离子键合
医学
物理化学
内分泌学
工程类
功率(物理)
物理
量子力学
作者
Agnese Birrozzi,Fabio Maroni,Rinaldo Raccichini,Roberto Tossici,Roberto Marassi,Francesco Nobili
标识
DOI:10.1016/j.jpowsour.2015.06.065
摘要
A graphene-based composite containing Sn and Sb is synthesized and characterized. Structural and morphological characterizations demonstrate the achievement of multilayer graphene with anchored SnSb nanoparticles. The composite is tested as active material for lithium-ion battery anodes and, as a result of the use of poly acrylic acid binder and vinylene carbonate electrolyte additive, remarkable electrochemical performance are achieved in terms of stable cycling stability and specific gravimetric capacity (468 mAh g−1 after 75 cycles with a capacity retention of about 80%). Moreover, impedance spectroscopy analysis further demonstrates the enhanced stability obtained by using, together with vinylene carbonate electrolyte additive, poly acrylic acid binder instead of poly vinylidene difluoride.
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