Expanded graphite@SnO2@ polyaniline Composite with Enhanced Performance as Anode Materials for Lithium Ion Batteries
Expanded graphite@SnO2@ polyaniline Composite with Enhanced Performance as Anode Materials for Lithium Ion Batteries
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性能增强的膨胀石墨@SnO2@聚苯胺复合材料作为锂离子电池负极材料
DOI:
10.1016/j.electacta.2017.04.012
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发表时间:
2017-06
影响因子:
6.6
通讯作者:
Xianyou Wang
中科院分区:
文献类型:
--
作者:
Lingguang Yi;Li Liu;Guoxiong Guo;Xiaoying Chen;Yue Zhang;Shuyang Yu;Xianyou Wang
The drastic volume change is the major drawback limiting stannic oxide as an anode material for lithium ion batteries. In this work, three-dimensional (3D) EG@SnO2@PANI composite is synthesized via solvothermal method followed by in-situ oxidative polymerization. Compare with the bare SnO2and EG@SnO2samples, the rate performance and cycling stability of the EG@SnO2@PANI sample have been enhanced, which can be attributed to the dual conductive networks of polyaniline (PANI) with expanded graphite (EG). As a result, the 3D EG@SnO2@PANI composite not only delivers a higher initial columbic efficiency of 77.8%, an excellent initial reversible capacity of 1021 mAh g−1at a current density of 0.1 A g−1but also still maintains at 408 mAh g−1after 100 cycles. And it exhibits enhanced rate performance, which remains at 270 mAh g−1with 2 A g−1. Consequently, preparing EG@SnO2@PANI is a suitable strategy to develop SnO2anode materials for lithium batteries.
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