Premium
Covalent Assembly of MoS 2 Nanosheets with SnS Nanodots as Linkages for Lithium/Sodium‐Ion Batteries
Author(s) -
Ru Jiajia,
He Ting,
Chen Binjie,
Feng Yutong,
Zu Lianhai,
Wang Zhijun,
Zhang Qiaobao,
Hao Tianzi,
Meng Ruijin,
Che Renchao,
Zhang Chi,
Yang Jinhu
Publication year - 2020
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.202005840
Subject(s) - nanodot , covalent bond , lithium (medication) , materials science , ion , van der waals force , nanotechnology , electron transfer , ionic bonding , anode , sodium , chemical engineering , chemical physics , molecule , chemistry , electrode , organic chemistry , medicine , endocrinology , engineering , metallurgy
Weak van der Waals interactions between interlayers of two‐dimensional layered materials result in disabled across‐interlayer electron transfer and poor layered structural stability, seriously deteriorating their performance in energy applications. Herein, we propose a novel covalent assembly strategy for MoS 2 nanosheets to realize unique MoS 2 /SnS hollow superassemblies (HSs) by using SnS nanodots as covalent linkages. The covalent assembly based on all‐inorganic and carbon‐free concept enables effective across‐interlayer electron transfer, facilitated ion diffusion kinetics, and outstanding mechanical stability, which are evidenced by experimental characterization, DFT calculations, and mechanical simulations. Consequently, the MoS 2 /SnS HSs exhibit superb rate performance and long cycling stability in lithium‐ion batteries, representing the best comprehensive performance in carbon‐free MoS 2 ‐based anodes to date. Moreover, the MoS 2 /SnS HSs also show excellent sodium storage performance in sodium‐ion batteries.