Sandwich-like SnS2/graphene multilayers for efficient lithium/sodium storage. Issue 41 (4th October 2021)

• Record Type: Journal Article
• Authors: Liu, Jiande; Chang, Yingfan; Chen, Chen; Guo, Pengqian; Sun, Kai; Cao, Dianliang; Ma, Yaodong; Liu, Dequan; Liu, Qiming; Liu, Jie; He, Deyan
• Is Part Of: Dalton transactions. Volume 50:Issue 41(2021)
• Page Start: 14884
• Page End: 14890
• Publication Date: 2021-10-04
• Subjects: Chemistry, Inorganic -- Periodicals; Chemistry, Physical and theoretical -- Periodicals; Chemistry, Inorganic -- Periodicals; 546.05
• DOI: 10.1039/d1dt00781e
• Languages: English
• ISSNs: 1477-9226

Abstract

Abstract : SnS2 /graphene multilayers with enhanced interlayer spacing exhibited excellent cycling stability and superior rate performance as an anode material for LIBs/SIBs. Abstract : 2D materials have attracted extensive attention in energy storage and conversion due to their excellent electrochemical performances. Herein, we report utilization of monolayer SnS2 sheets within SnS2 /graphene multilayers for efficient lithium and sodium storage. SnS2 /graphene multilayers are synthesized through a solution-phase direct assembly method by electrostatic interaction between monolayer SnS2 and PDDA (polydimethyl diallyl ammonium chloride)-graphene nanosheets. It has been shown that the SnS2 /graphene multilayer electrode has a large pseudocapacity contribution for enhanced lithium and sodium storage. Typical batteries deliver a stable reversible capacity of ∼160 mA h g −1 at 2 A g −1 after 2000 cycles for lithium and a stable reversible capacity of ∼142 mA h g −1 at 1 A g −1 after 1000 cycles for sodium. The excellent electrochemical performances of SnS2 /graphene multilayers are attributed to the synergistic effect between the monolayer SnS2 sheets and the PDDA-graphene nanosheets. The multilayer structure assembled by different monolayer nanosheets is promising for the further development of 2D materials for energy storage and conversion.