文献类型：期刊文献

英文题名：Self-assembled 3D Fe-2(MoO4)(3) microspheres with amorphous shell as anode of lithium-ion batteries with superior electrochemical performance

作者：Su, Yun[1,2];Chen, Shuangqiang[1];Yang, Qinsi[1];Wang, Yong[1]

第一作者：Su, Yun;苏芸

通讯作者：Chen, SQ[1];Wang, Y[1]

机构：[1]Shanghai Univ, Sch Environm & Chem Engn, Dept Chem Engn, Shangda Rd 99, Shanghai 200444, Peoples R China;[2]Xinxiang Univ, Phys & Elect Engn Dept, Jinsui Rd 181, Xinxiang 453003, Henan, Peoples R China

第一机构：Shanghai Univ, Sch Environm & Chem Engn, Dept Chem Engn, Shangda Rd 99, Shanghai 200444, Peoples R China

通讯机构：[1]corresponding author), Shanghai Univ, Sch Environm & Chem Engn, Dept Chem Engn, Shangda Rd 99, Shanghai 200444, Peoples R China.

年份：2020

卷号：217

外文期刊名：CHEMICAL ENGINEERING SCIENCE

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000527336600022)】；

基金：The authors gratefully acknowledge the National Natural Science Foundation of China (51603119, 21406136, 21975154), Shanghai Science and Technology Committee (15520720600, 17010500300), Innovative Research Team (IRT13078), and Innovative research team of high-level local universities in Shanghai for financial support. Research is also supported by The Program for Professor of Special Appointment (Eastern Scholar) at Shanghai Institutions of Higher Learning and Shanghai Key Laboratory of Materials Protection and Advanced Materials in Electric Power. The authors thank Laboratory for Microstructures, Instrumental Analysis, and Research Center of Shanghai University for offering access to materials characterization.

语种：英文

外文关键词：Fe-2(MoO4)(3); Hierarchical 3D structure; Amorphous shell; Reduced grain boundaries; Lithium ion batteries

摘要：Metal molybdates are regarding as promising electrode materials for next-generation lithium-ion batteries (LIBs). However, the poor electronic conductivity and sluggish ion diffusion are the two main obstacles that limit their electrochemical performances. In this work, self-assembled hierarchical Fe-2(MoO4)(3) microspheres with a thin amorphous shell (FMO-A) were prepared via a morphology-tunable and template-free hydrothermal method as an example of metal molybdates for LIBs. The morphologies were easily tunable by changing experimental parameters, such as the pH value, and reaction time. When applied as anode of LIBs, FMO-A delivered a high reversible capacity of 1138.2 mAh g(-1) after 250 cycles at 100 mA g(-1) and displayed remarkable rate performances. This is mainly ascribed to the unique hierarchical structure and high surface area of Fe-2(MoO4)(3) and the thin amorphous shell on providing low Gibbs free energy on redox reactions, reduced grain boundaries, isotropic nature, and buffering volume variations during cycles. (C) 2020 Published by Elsevier Ltd.