Covalent Assembly of MoS2 Nanosheets with SnS Nanodots as Linkages for Lithium/Sodium-Ion Batteries

Jiajia Ru; Ting He; Binjie Chen; Yutong Feng; Lianhai Zu; Zhijun Wang; Qiaobao Zhang; Tianzi Hao; Ruijin Meng; Renchao Che; Chi Zhang; Jinhu Yang

doi:10.1002/anie.202005840

Covalent Assembly of MoS₂ Nanosheets with SnS Nanodots as Linkages for Lithium/Sodium-Ion Batteries

Angew Chem Int Ed Engl. 2020 Aug 17;59(34):14621-14627. doi: 10.1002/anie.202005840. Epub 2020 Jul 2.

Authors

Jiajia Ru^{1

2}, Ting He^{2

3}, Binjie Chen¹, Yutong Feng¹, Lianhai Zu¹, Zhijun Wang⁴, Qiaobao Zhang⁵, Tianzi Hao¹, Ruijin Meng¹, Renchao Che⁶, Chi Zhang^{1

2}, Jinhu Yang^{1

2}

Affiliations

¹ School of Chemical Science and Engineering, Tongji University, Shanghai, 200092, P. R. China.
² Research Center for Translational Medicine & Key Laboratory of Arrhythmias of the Ministry of Education of China, East Hospital, Tongji University School of Medicine, No. 150 Jimo Road, Shanghai, 200120, P. R. China.
³ Department of Energy and Power Engineering, Tsinghua University, Beijing, 100084, P. R. China.
⁴ School of Chemistry and Chemical Engineering, Jinggangshan University, Ji'an, Jiangxi, 343009, P. R. China.
⁵ Department of Materials Science and Engineering, College of Materials, Xiamen University, Xiamen, 361005, Fujian, P. R. China.
⁶ Laboratory of Advanced Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Fudan University, Shanghai, 200438, P. R. China.

PMID: 32452595
DOI: 10.1002/anie.202005840

Abstract

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 MoS₂ nanosheets to realize unique MoS₂ /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 MoS₂ /SnS HSs exhibit superb rate performance and long cycling stability in lithium-ion batteries, representing the best comprehensive performance in carbon-free MoS₂ -based anodes to date. Moreover, the MoS₂ /SnS HSs also show excellent sodium storage performance in sodium-ion batteries.

Keywords: MoS2 nanosheets; SnS nanodots; covalent assembly; lithium-ion batteries; sodium-ion batteries.

Abstract

Grants and funding