Heterostructural SnO/SnO2@C composite fabricated from tin-based coordination polymer as high-performance anode materials for lithium ion batteries

Heterostructural SnO/SnO2@C composite fabricated from tin-based coordination polymer as high-performance anode materials for lithium ion batteries
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锡基配位聚合物异质结构SnO/SnO2@C复合材料作为高性能锂离子电池负极材料

DOI:
10.1016/j.matlet.2019.05.051
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发表时间:
2019-09
期刊:
影响因子:
3
通讯作者:
Liu Jian-Jun
Liu Jian-Jun
中科院分区:
材料科学3区
文献类型:
--
作者:
Xia Shu-Biao;Li Fu-Shao;Shen Xiang;Li Xue;Cai Xiao-Lan;Liu Jian-Jun

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我们报道了一种简单的碳化策略,在500 °C下从锡基配位聚合物前驱体碳化获得了包覆在碳基体中的复合结构的SnO/SnO 2颗粒。SnO/SnO2@C电极在100 mA g− 1下50次循环后的容量为601.7 mAh g− 1,400次循环后的高容量保持率为84.6%,远远上级前体Sn-1电极。SnO/SnO2@C优异的电化学性能主要归因于其丰富的碳含量和良好的分散性,提高了电子电导率,为电子和离子的迁移提供了通道。
We report a simple carbonization strategy to obtain a composite structured SnO/SnO2particles encapsulated into carbon matrix from a tin-based coordination polymer precursor at 500 °C carbonization. SnO/SnO2@C electrode delivers a capacity of 601.7 mAh g−1at 100 mA g−1after 50 cycles and a high capacity retention of 84.6% after 400 cycles, which is far superior to the precursor Sn-1 electrode. The excellent electrochemical performance of SnO/SnO2@C could be mainly attributed to the abundant carbon and well-dispersed SnO/SnO2particles which can improve the electronic conductivity and provide a path for the migration of electrons and ions.
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