文献类型：期刊文献

英文题名：V3S4 nanoparticles anchored on three-dimensional porous graphene gel for superior lithium storage

作者：Liu, Qixing[1];Yao, Weiqi[1];Zhan, Liang[1,2];Wang, Yanli[1];Zhu, Yi-An[1]

机构：[1]East China Univ Sci & Technol, Shanghai Key Lab Multiphase Mat Chem Engn, State Key Lab Chem Engn,Minist Educ, Key Lab Specially Funct Polymers & Related Techno, Shanghai 200237, Peoples R China;[2]Chinese Acad Sci, Inst Coal Chem, CAS Key Lab Carbon Mat, Taiyuan 030001, Shanxi, Peoples R China

年份：2018

卷号：261

起止页码：35

外文期刊名：ELECTROCHIMICA ACTA

收录：;EI(收录号：20175204574906);WOS:【SCI-EXPANDED(收录号:WOS:000424635600005)】；

基金：This work was financially supported by National Science Foundation of China (51472086, 51002051) and CAS Key Laboratory of Carbon Materials (KLCMKFJJ1703).

语种：英文

外文关键词：V3S4; Graphene gel; Anode material; Lithium ion battery

摘要：V3S4 nanoparticles anchored on three-dimensional (3D) reduced graphene oxide gel (V3S4-rGO) is successfully fabricated as a novel anode material for lithium-ion batteries. The V3S4 nanoparticles with a size of 200-300 nm are homogeneously and tightly adhered to the surface of graphene nanosheets. The interactions between V3S4 nanoparticles and rGO are examined through density functional theory (DFT) calculations with van der Waals forces considered. The nanoscale V3S4 not only exhibits a high theoretical capacity and a high electric conductivity, but also provides a short pathway for electron transportation and Li+ diffusion. Meanwhile, the 3D porous rGO gel can provide a continuous electric conductive network and also act as buffers for volume expansion during the repeated lithiation/delithiation process. Compared with the previous reported V2O3-rGO hybrid, the resultant V3S4-rGO electrode exhibits a better electrochemical performance with a high reversible specific capacity (873 mAh g(-1) after 200 cycles at 0.2 C) and a high rate capability (502 mAh g(-1) at 5 C and 338.7 mAh g(-1) at 10 C) owing to the high content of active V3S4 and its unique nanostructures. (c) 2017 Elsevier Ltd. All rights reserved.