标题:Spinel Mn_(1.5)Co_(1.5)O4 core-shell microspheres as Li-ion battery anode materials with a long cycle life and high capacity
作者:Jingfa Li;Shenglin Xiong;Xiaowei Li
作者机构:[Li, J] Key Laboratory of the Colloid and Interface Chemistry (Shandong University), Ministry of Education, Shandong University, Jinan, 250100, China; 更多
通讯作者:Xiong, S
通讯作者地址:[Xiong, SL]Shandong Univ, Key Lab Colloid & Interface Chem, Minist Educ, Sch Chem & Chem Engn, Jinan 250100, Peoples R China.
来源:Journal of Materials Chemistry: An Interdisciplinary Journal dealing with Synthesis, Structures, Properties and Applications of Materials, Particulary Those Associated with Advanced Technology
出版年:2012
卷:22
期:43
页码:23254-23259
DOI:10.1039/c2jm35607d
摘要:Transition metal oxides are important functional materials that have gained enormous research interest in recent years. In this work, porous cubic manganese cobalt spinel Mn_(1.5)Co_(1.5)O4 core-shell microspheres were first prepared via a urea-assisted solvothermal route followed by pyrolysis of the carbonate precursor. The microsphere is composed of the shell of 400 nm thickness and the core with a 2.5 μm diameter. Nitrogen sorption isotherms show that this structure possesses a high surface area of 27.0 m~2 g~(-1) with an average pore diameter of 30 nm. Compared with a simple spherical nanopowder, such a core-shell like porous structure is expected to improve the electrochemical performance, due to its higher resistance against separation or isolation during the electrochemical reaction. The as-prepared Mn_(1.5)Co_(1.5)O4 core-shell microspheres show an excellent cyclic performance at high current density with more than 90% capacity retention in a testing range of 300 cycles when used as an anode material for lithium ion batteries (LIBs), which can be attributed to the appropriate pore size and unique core-shell structures. Therefore, the Mn_(1.5)Co_(1.5)O4 core-shell microspheres prepared by the present synthetic route could be identified as a potential anode candidate for the near future development of LIBs.
收录类别:EI;SCOPUS;SCIE
WOS核心被引频次:101
Scopus被引频次:103
资源类型:期刊论文
原文链接:https://www.scopus.com/inward/record.uri?eid=2-s2.0-84867537720&doi=10.1039%2fc2jm35607d&partnerID=40&md5=f5d4b56bd481821570ccfb08fec8e357
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