文献类型：期刊文献

英文题名：2D MoS2/polyaniline heterostructures with enlarged interlayer spacing for superior lithium and sodium storage

作者：Wang, Haiyan[1];Jiang, Hao[1];Hu, Yanjie[1];Li, Neng[2];Zhao, Xiujian[2];Li, Chunzhong[1]

机构：[1]East China Univ Sci & Technol, Sch Mat Sci & Engn, AKey Lab Ultrafine Mat, Minist Educ, Shanghai 200237, Peoples R China;[2]Wuhan Univ Technol, State Key Lab Silicate Mat Architectures, Wuhan 430070, Peoples R China

年份：2017

卷号：5

期号：11

起止页码：5383

外文期刊名：JOURNAL OF MATERIALS CHEMISTRY A

收录：;EI(收录号：20171203475329);WOS:【SCI-EXPANDED(收录号:WOS:000397605300017)】；

基金：This work was supported by the National Natural Science Foundation of China (21522602, 51672082, 91534202, 51461135004), the International Science and Technology Cooperation Program of China (2015DFA51220), the Shanghai Rising-Star Program (15QA1401200), the Research Project of Chinese Ministry of Education (113026A), the Program for New Century Excellent Talents in University (NCET-13-0796), and the Fundamental Research Funds for the Central Universities.

语种：英文

外文关键词：Metal ions - Nanosheets - Sodium-ion batteries - Layered semiconductors - Molecular dynamics - Anodes - Lithium-ion batteries

摘要：The exploitation of high-capacity and long-life MoS2-based materials is highly important for developing lithium ion batteries (LIBs) and sodium ion batteries (SIBs). Herein, we demonstrate the confined synthesis of 2D MoS2/ polyaniline (MoS2/PANI) nanosheet heterostructures with well-defined interfaces, in which the interlayer distance of MoS2 is greatly enlarged from 0.62 nm to 1.08 nm. The introduction of such a big interlayer distance for efficient Li+/Na+ storage has never been demonstrated before. The unique MoS2/PANI nanosheets can address well the key challenges of traditional MoS2 anode materials related to low conductivity particularly in the vertical direction, easy restacking/aggregation, large volumetric change and sluggish Li+/Na+ diffusion kinetics in the interlamination. Consequently, they deliver a high reversible capacity, superior rate capability and long cycle life for both LIBs and SIBs. A state-of-the-art ab initio molecular dynamics (AIMD) simulation also reveals that MoS2/PANI nanosheets with enlarged interlayer spacing possess a remarkably improved Li+/Na+ diffusion mobility compared to pristine MoS2 nanosheets. The present material design concept opens new directions for finding efficient LIBs/SIBs anodes with high capacity, rate capability and stability.