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- Title
Hierarchical three-dimensional flower-like CoO architectures with a mesocrystal structure as high capacity anode materials for long-lived lithium-ion batteries.
- Authors
Cao, Wenqiang; Wang, Wenzhong; Shi, Honglong; Wang, Jun; Cao, Maosheng; Liang, Yujie; Zhu, Min
- Abstract
In this work, we rationally design a high-capacity electrode based on three-dimensional (3D) hierarchical CoO flower-like architectures with a mesocrystal nanostructure. The specific combination of the micro-sized 3D hierarchical architecture and the mesocrystal structure with a high porosity and single crystal-like nature can address the capacity fading and cycling stability as presented in many conversion electrodes for lithium-ion batteries. The hierarchical 3D flower-like CoO architecture accommodates the volume change and mitigates mechanical stress during the lithiation-delithiation processes, and the mesocrystal structure provides extra lithium-ion storage and electron/ion transport paths. The achieved hierarchical 3D CoO flower-like architectures with a mesocrystal nanostructure exhibit a high reversible capacity of 920 mA·h·g after 800 cycles at 1.12 C (1 C = 890 mA·h·g), improved rate performance, and cycling stability. The finding in this work offers a new perspective for designing advanced and long-lived lithium-ion batteries.
- Publication
Nano Research, 2018, Vol 11, Issue 3, p1437
- ISSN
1998-0124
- Publication type
Article
- DOI
10.1007/s12274-017-1759-0