文献类型：期刊文献

英文题名：Metal-organic frameworks derived (Cu0.30Co0.7)Co2O4/CuO composite rectangular pyramid grass as high performance anode materials for lithium ion battery

作者：Wang, Bin[1];Wang, Xiaoyan[2];Yu, Xinzhi[2]

第一作者：王斌

通讯作者：Yu, XZ[1]

机构：[1]Xinxiang Univ, Phys & Elect Engn Dept, Xinxiang 453003, Peoples R China;[2]Hunan Univ, Sch Phys & Elect, Changsha 410082, Hunan, Peoples R China

第一机构：新乡学院物理与电子工程学院

通讯机构：[1]corresponding author), Hunan Univ, Sch Phys & Elect, Changsha 410082, Hunan, Peoples R China.

年份：2017

卷号：250

起止页码：35-41

外文期刊名：ELECTROCHIMICA ACTA

收录：;EI(收录号：20173404061232);Scopus(收录号：2-s2.0-85027504433);WOS:【SCI-EXPANDED(收录号:WOS:000410679300005)】；

基金：This work was financially supported by National Natural Science Foundation of China (Nos. 21473052 and 51672078), Foundation of Henan Educational committee (Grant No. 15A140032), Xinxiang University Science and Technology Innovation Fund (Grant No. 15ZP01) and Xinxiang University Doctor Initial Research Program (Grant No. 1366020018).

语种：英文

外文关键词：metal-organic frameworks; (Cu0.30Co0.7)Co2O4/CuO; rectangular pyramid grass; anode materials; lithium ion battery

摘要：With a simple hydrothermal and subsequent annealing method, the rectangular pyramid grass structure of (Cu0.30Co0.7)Co2O4/CuO was obtained. During the synthesis process, CuO can effectively restrain the aggregation of (Cu0.30Co0.7)Co2O4, which is beneficial to morphology reconstruction. After morphology reconstruction, the rectangular pyramid grass structure transformed to net porous structure, which is helpful for electrolyte penetration and Li ions transportation, and results in an increased capacity and enhanced cycling stability. The electrochemical measurements of (Cu0.30Co0.7)Co2O4/CuO electrodes exhibited excellent specific capacitance (717 mA h g(-1)) and cycle stability (1000 cycles) at a large current density of 1000 mA g(-1). The first-principles calculation shows that Cu-O bond is weaker than that of Co-O. Furthermore, with the insertion of Li ion, Cu-O bond broke first, which is conducive to the de/insertion of Li ion. In all, the porous (Cu0.30Co0.7)Co2O4/CuO composites were synthesized by a simple method and the excellent electrochemical properties can be obtained for LIBs. (C) 2017 Published by Elsevier Ltd.