G@SnO2@PPy复合材料的合成、表征及其储锂性能研究

G@SnO₂@PPy复合材料的合成、表征及其储锂性能研究

钱翔英，刘美梅

（中国科学院福建物质结构研究所，福建 福州 350002 ）

摘 要  本文成功合成出新颖的G@SnO₂@PPy夹层型复合材料。通过XRD、SEM和TEM等手段详细表征了该复合材料的成分与形貌，并测试了其作为锂离子电池负极材料的电化学性能。结果表明，复合材料中SnO₂纳米颗粒均匀分布在石墨烯和导电聚吡咯夹层中，作为锂离子电池负极材料表现出优异的循环性能和良好的倍率性能。

关键词  SnO₂；锂电池负极材料；石墨烯；PPy

中图分类号：TB33；TM911；TG115.21⁺5.3；TG115.23  文献标识码：A     doi:10.3969/j.issn.1000-6281.2016.02.002

Synthesis, characterizations and lithium storage performance of G@SnO₂@PPy composite

QIAN Xiang-ying，LIU Mei-mei

(Fujian Institute of Research on the Structure of Matter，Chinese Academy of Sciences，Fuzhou Fujian 350002, China)

Abstract  A new G@SnO₂@PPy composite with sandwich structure has been proposed in this paper. XRD, SEM, and TEM were used to characterize the composition, morphology and structure of this composite and the result shows that SnO₂ nanoparticles are uniformly distributed between the layers of graphene and PPy. Meanwhile, the G@SnO₂@PPy composite as anode material for lithium-ion battery delivers outstanding electrochemical performance with good rate performance and excellent cycling stability.

Keywords  SnO₂; anode material; graphene; PPy

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