SnS2 nanoparticle-integrated graphene nanosheets as high-performance and cycle-stable anodes for lithium and sodium storage

• Published in: Journal of alloys and compounds Vol. 822; p. 153686
• Main Authors: Wu, Ya-Qian, Yang, Yu, Pu, Hao, Gao, Rui-Ze, Meng, Wen-Jie, Yang, Hui-Xian, Zhao, Dong-Lin
• Format: Journal Article
• Language: English
• Published: Lausanne Elsevier B.V 05.05.2020; Elsevier BV
• Subjects: Anodes; Clean energy; Covalent bonds; Decay rate; Electrode materials; Energy storage; Energy storage materials; Graphene; Graphene nanosheets; Lithium; Lithium-ion batteries; Lithium-ion battery; Nanoparticles; Nanosheets; Rechargeable batteries; SnS2 nanoparticle; Sodium-ion batteries; Storage batteries; Tin disulfide; Lithium-ion battery; Graphene nanosheets; SnS2 nanoparticle; Electrode materials; Energy storage materials; Sodium-ion batteries
• ISSN: 0925-8388; 1873-4669
• DOI: 10.1016/j.jallcom.2020.153686

With the intensification of environmental pollution problems, the requirement for clean energy is increasing as time goes by. Currently, lithium-ion batteries (LIBs) composed of graphite anode cannot meet the commercial demand of human beings. Furthermore, considering the viewpoint that sodium-ion batteries (SIBs) were promising in large-scale energy storage, we synthesize a hybrid of SnS2 nanoparticle-integrated graphene nanosheets (SnS2@GNS) by a facile and simple method. The unique structure that SnS2 and GNS bonded by covalent bonds makes it displays excellent performance for lithium/sodium storage. Especially in LIBs, when tested at 0.1 A g−1, it delivers 1250.8 mA h g−1 after cycling 150 times which is much higher than previously reported Sn-based anode materials. In addition, it sustains 798.6 mA h g−1 without obvious capacity decay when the rate changed to 0.5 A g−1. Moreover, when employed in SIBs, it also delivers superior cycle performance (510.2 mA h g−1 after 100 cycles), which makes it possible to apply in LIBs and SIBs at the same time. [Display omitted] •SnS2 nanoparticle-integrated graphene nanosheets were synthesized by a facile and simple method.•The addition of defective graphene can alleviate the volume change and provide more active sites for ion storage.•The SnS2@GNS electrode exhibits high reversible capacities for both lithium-ion batteries and sodium-ion batteries.