In-situ growth engineering of nano-sheets SnS2 on S-doped reduced graphene oxide for high lithium/sodium storage capacity

• Published in: Journal of electroanalytical chemistry (Lausanne, Switzerland) Vol. 904; p. 115947
• Main Authors: Yang, Xiao-Xiao, He, Cun-Jian, Hou, Yun-Lei, Wang, Yu-Qian, Ren, Meng-Xin, Lei, Bu-Yue, Meng, Wen-Jie, Zhao, Dong-Lin
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 01.01.2022; Elsevier Science Ltd
• Subjects: Anodes; Electrochemical analysis; Electrode materials; Graphene; In-situ growth; Lithium; Lithium-ion batteries; Lithium/sodium storage; Nanostructure; Rechargeable batteries; S-doped reduced graphene oxide; Sheets; SnS2 nanosheets; Sodium; Sodium-ion batteries; Storage capacity; Structural design; Tin disulfide; S-doped reduced graphene oxide; In-situ growth; SnS2 nanosheets; Lithium/sodium storage
• ISSN: 1572-6657; 1873-2569
• DOI: 10.1016/j.jelechem.2021.115947

[Display omitted] •SnS2 nanosheets are grown in situ on S-doped reduced graphene oxide by a covalent bond of CS.•S-rGO framework not only hinders aggregation of SnS2 nanosheets but also provides more active sites for ion storage.•The strong CS bond between SnS2 and S-rGO endows wonderful structural stability.•SnS2/S-rGO composites exhibit outstanding cycle stability and rate performance for Li+/Na+ storage. The two-dimensional layered tin disulfide (SnS2) has aroused extensive attention in both lithium-ion batteries (LIBs) and sodium-ion batteries (SIBs) since its satisfactory theoretical capacity. Herein, the anode material comprised of SnS2 nanosheets grown in-situ on S-doped reduced graphene oxide sheets (SnS2/S-rGO) was successfully prepared via a one-step hydrothermal method. SnS2 nanosheets are covalently linked to rGO by a CS bond, this special structure endows outstanding electrochemical performance for SnS2/S-rGO electrode. At 0.1 A g−1, it delivers a specific capacity of 1641.9 mAh g−1 and 610.5 mAh g−1 for lithium and sodium storage, respectively. Furthermore, the electrode can also maintain 1776.4 mAh g−1 even after 200 cycles exhibiting a splendid long cycle performance at 1 A g−1 for LIBs. Obviously, the structural design of the SnS2/S-rGO composite show advantages in lithium/sodium storage performance.