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Interconnected CoFe2O4-Polypyrrole Nanotubes as Anode Materials for High Performance Sodium Ion Batteries
He, Qiming1,2; Rui, Kun1; Chen, Chunhua3; Yang, Jianhua1,2; Wen, Zhaoyin1,2
2017
发表期刊ACS Applied Materials and Interfaces
ISSN19448244
卷号9期号:42页码:36927-36935
摘要CoFe2O4-coated polypyrrole (PPy) nanotubes (CFO-PPy-NTs) with three-dimensional (3-D) interconnected networks have been prepared through a simple hydrothermal method. The application has been also studied for sodium ion batteries (SIBs). The finely crystallized CoFe2O4nanoparticles (around 5 nm in size) are uniformly grown on the PPy nanotubes. When tested as anode materials for SIBs, the CFO-PPy-NT electrode maintains a discharge capacity of 400 mA h g-1and a stable Coulombic efficiency of 98% after 200 cycles at 100 mA g-1. Even at a higher current density of 1000 mA g-1, the composite can still retain a discharge capacity of 220 mA h g-1after 2000 cycles. The superior electrochemical performance could be mainly ascribed to the uniform distribution of CoFe2O4on the 3-D matrix of PPy interconnected nanotubes, which favors the diffusion of sodium ions and electronic transportation and also buffers the large volumetric expansion during charge/discharge. Thereby our study suggests that such CFO-PPy-NTs have great potential as an anode material for SIBs. © 2017 American Chemical Society.
DOI10.1021/acsami.7b12503
EI入藏号20174504381918
EI主题词Sodium-ion batteries
EI分类号531.1 Metallurgy - 701.1 Electricity: Basic Concepts and Phenomena - 714.1 Electron Tubes - 761 Nanotechnology - 815.1.1 Organic Polymers - 819.4 Fiber Products
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文献类型期刊论文
条目标识符http://ir.sic.ac.cn/handle/331005/25796
专题中国科学院上海硅酸盐研究所
作者单位1.CAS, Key Laboratory of Materials for Energy Conversion, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai; 200050, China;
2.University of Chinese Academy of Sciences, Beijing; 100049, China;
3.CAS, Key Laboratory of Materials for Energy Conversion, University of Science and Technology of China, Hefei, Anhui; 230026, China
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He, Qiming,Rui, Kun,Chen, Chunhua,et al. Interconnected CoFe2O4-Polypyrrole Nanotubes as Anode Materials for High Performance Sodium Ion Batteries[J]. ACS Applied Materials and Interfaces,2017,9(42):36927-36935.
APA He, Qiming,Rui, Kun,Chen, Chunhua,Yang, Jianhua,&Wen, Zhaoyin.(2017).Interconnected CoFe2O4-Polypyrrole Nanotubes as Anode Materials for High Performance Sodium Ion Batteries.ACS Applied Materials and Interfaces,9(42),36927-36935.
MLA He, Qiming,et al."Interconnected CoFe2O4-Polypyrrole Nanotubes as Anode Materials for High Performance Sodium Ion Batteries".ACS Applied Materials and Interfaces 9.42(2017):36927-36935.
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