Citation: Nan Li, Xiaowen Guo, Xinru Tang, Yichen Xing, Huan Pang. Three-dimensional Co₂V₂O₇·nH₂O superstructures assembled by nanosheets for electrochemical energy storage[J]. Chinese Chemical Letters, ;2022, 33(1): 462-465. doi: 10.1016/j.cclet.2021.05.012 shu

Three-dimensional Co₂V₂O₇·nH₂O superstructures assembled by nanosheets for electrochemical energy storage

School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225009, China

panghuan@yzu.edu.cn

Received Date: 7 April 2021
Revised Date: 3 May 2021
Accepted Date: 10 May 2021
Available Online: 19 May 2021

Figures(5)

Hierarchical superstructures assembled by nanosheets can effectively prevent aggregation of nanosheets and improve performance in energy storage. Therefore, we proposed a facile hydrothermal method to obtain three-dimensional (3D) superstructure assembled by nanosheets. We found that the ratio of Co²⁺/HMTA affected the morphology of the samples, and the 3D hierarchical structures of are obtained while the ratio of Co²⁺/HMTA is 12:25. The hierarchical structures with sufficient interior space preserves the original sheet-like dimensional components and results in sufficient active sites and efficient mass diffusion. Hence, the 3D Co₂V₂O₇·nH₂O hierarchical structure exhibits good rate capability and high stability while as electrode materials. Meanwhile, when power density is 745.13 W/kg, the assembled CVO-2//AC shows an energy density of 47.7 Wh/kg. The work displays a facile method for fabrication of 3D superstructure assembled by 2D nanosheets that can be applied in energy storage.
- Superstructure,
- Hydrothermal method,
- High stability,
- Co₂V₂O₇·nH₂O,
- Energy storage
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沈阳化工大学材料科学与工程学院沈阳 110142

Three-dimensional Co2V2O7·nH2O superstructures assembled by nanosheets for electrochemical energy storage

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Three-dimensional Co₂V₂O₇·nH₂O superstructures assembled by nanosheets for electrochemical energy storage