Ultrafine MoS2 Nanosheets Vertically Patterned on Graphene for High-Efficient Li-Ion and Na-Ion Storage

• Published in: Frontiers in chemistry Vol. 9; p. 802788
• Main Authors: Wei, Chunguang, Hou, Zhidong, Sun, Huanhuan, Wang, Jian-Gan
• Format: Journal Article
• Language: English
• Published: Frontiers Media S.A 03.12.2021
• Subjects: Chemistry; graphene; heterostructure; Li-ion batteries; MoS2; Na-ion batteries
• ISSN: 2296-2646; 2296-2646
• DOI: 10.3389/fchem.2021.802788

Hierarchically two-dimensional (2D) heteroarchitecture with ultrafine MoS 2 nanosheets vertically patterned on graphene is developed by using a facile solvothermal method. It is revealed that the strong interfacial interaction between acidic Mo precursors and graphene oxides allows for uniform and tight alignment of edge-oriented MoS 2 nanosheets on planar graphene. The unique sheet-on-sheet architecture is of grand advantage in synergistically utilizing the highly conductive graphene and the electroactive MoS 2 , thus rendering boosted reaction kinetics and robust structural integrity for energy storage. Consequently, the heterostructured MoS 2 @graphene exhibits impressive Li/Na-ion storage properties, including high-capacity delivery and superior rate/cycling capability. The present study will provide a positive impetus on rational design of 2D metal sulfide/graphene composites as advanced electrode materials for high-efficient alkali–metal ion storage.