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- Title
Sandwich architecture of graphene/MoS<sub>2</sub> composite as anodes for enhanced reversible lithium and sodium storage.
- Authors
Yang, Zunxian; Zhang, Yufei; Huang, Jianhua; Ye, Bingqing; Lin, Shimin; Liu, Jiahui; Ye, Yuliang; Zheng, Kang; Lu, Ganzhen; Guo, Tailiang; Yu, Xuebin; Chen, Gengxu
- Abstract
Summary: Transition metal disulfides have been widely used in lithium/sodium ion batteries as cathode materials. However, the huge structural changes in electrochemical processes remain a challenge. Here, 3DG‐MoS2 hybrid nanomaterials with particular sandwich architecture were synthesized successfully by a simple evaporation and hydrothermal reaction method. This process enlarged the spacing between the graphene layers, increased the surface area, promoted electron and lithium/sodium ions diffusion, and alleviated structural deformations during ion insertion, which altogether improved the performance of lithium/sodium storage. Therefore, 3DG‐MoS2 composite nanomaterials exhibited excellent cyclic stability electrochemical performance (955 mAhg−1 at 1 Ag−1 after 500 cycle for LIBs; 479 mA hg−1 at 1 Ag−1 after 300 cycle for SIBs). When the current density gradually reduced to 100 mAg−1, it still delivered excellent lithium/sodium storage capacity ability (1130 mAhg−1 for lithium storage; 663 mAhg−1 for sodium storage) even at 10 cycles of 2 Ag−1 deep charge and discharge.
- Subjects
STORAGE batteries; TRANSITION metals; SODIUM ions; TRANSITION metal oxides; STORAGE; LITHIUM sulfur batteries; SANDWICH construction (Materials)
- Publication
International Journal of Energy Research, 2020, Vol 44, Issue 11, p8314
- ISSN
0363-907X
- Publication type
Article
- DOI
10.1002/er.5357