文献类型：期刊文献

英文题名：Rational design and synthesis of sandwich-like reduced graphene oxide/Fe2O3/N-doped carbon nanosheets as high-performance anode materials for lithium-ion batteries

作者：Wang, Jitong[1,3];Yang, Xiaojuan[1];Wang, Yongbang[1];Jin, Shuangling[2];Cai, Wendi[1];Liu, Baishan[1];Ma, Cheng[1];Liu, Xiaojun[1];Qiao, Wenming[1];Ling, Licheng[1,3]

机构：[1]East China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China;[2]Shanghai Inst Technol, Sch Mat Sci & Engn, Shanghai 201418, Peoples R China;[3]East China Univ Sci & Technol, Key Lab Specially Funct Polymer Mat & Related Tec, Shanghai 200237, Peoples R China

年份：2021

卷号：231

外文期刊名：CHEMICAL ENGINEERING SCIENCE

收录：;EI(收录号：20204809540108);WOS:【SCI-EXPANDED(收录号:WOS:000609489600003)】；

基金：This work is partly supported by the National Natural Science Foundation of China (No. 21978097, U1710252), CAS Key Laboratory of Carbon Materials (No: KLCMKFJJ2001), the Fundamental Research Funds for the Central Universities (222201817001, 50321041918013, 50321042017001).

语种：英文

外文关键词：Iron oxide; Reduced graphene oxide; Nitrogen doping carbon; Sandwich-like structure; Lithium ion batteries

摘要：To cope the challenges of poor conductivity and volume change for iron oxide, sandwich-like reduced graphene oxide/Fe2O3/N-doped carbon nanosheets are well designed and constructed via a two-step process through the combination of graphene-oriented hydrothermal method and the sol-gel coating technology. Nanometer Fe2O3 with a size of 10 nm is anchored within the sandwich structure composed of graphene nanosheet and a thin nitrogen doping carbon layer. Such unique structure can not only reduce the length of pathway for lithium ion diffusion and electron transport but also greatly alleviate the volume expansion as well as offer more surface active sites for electrochemical process, leading to a superior cycle stability and a high rate capability. The obtained nanosheet delivers an outstanding lithium storage capacity of 1116.7 mA h g(-1) after 100 cycles at current density of 500 mA g(-1) and an excellent rate capability of 547.4 mA h g(-1) at high current density of 4 A g(-1). Furthermore, full cell is fabricated using the nanosheet as anode and commercial LiFePO4 as cathode, which exhibits stable cycling performance, indicating good applicability of the anode. This work proposes a novel strategy to synthesize composites which could be further applied to the development of transition metal oxides and carbon composites as anode for lithium ion batteries. (C) 2020 Elsevier Ltd. All rights reserved.