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- Title
High‐Lithiophilicity Host with Micro/Nanostructured Active Sites based on Wenzel Wetting Model for Dendrite‐Free Lithium Metal Anodes.
- Authors
Mei, Yang; Zhou, Jiahui; Hao, Yutong; Hu, Xin; Lin, Jiao; Huang, Yongxin; Li, Li; Feng, Changgen; Wu, Feng; Chen, Renjie
- Abstract
Superior lithophilicity for the 3D host is essential to enable both uniform molten lithium (Li) infusion during synthesis and a low Li nucleation barrier during cycling. The wetting behavior between the host surface and molten Li can be reasonably predicted by the typical Wenzel model. Herein, inspired by the model, a lotus‐leaf‐like carbon nanotube (CNT)/NiO spheres hybrid structure is employed to improve the wettability and regulate Li plating/stripping. First, the CNTs interweave to form a highly conductive and robust sponge with accelerated Li+ transport and reinforced stability. Second, the embedded NiO microspheres possess the Li‐active nature. More importantly, the surface roughness caused by nano‐sized protuberances over its surface further stronger the lithiophilicity. By the in situ optical microscope and calculations, this multistage structure is proven to homogenize the Li deposition and inhibit dendrite growth. As a result, the composite anode enables excellent cycling performance at both symmetric and full cells. This design of micro/nanostructured host provides a new perspective on the development of an excellent wettable host for Li‐metal anode.
- Subjects
LITHIUM cell electrodes; METALS; OPTICAL microscopes; WETTING; SURFACE roughness; ANODES
- Publication
Advanced Functional Materials, 2021, Vol 31, Issue 50, p1
- ISSN
1616-301X
- Publication type
Article
- DOI
10.1002/adfm.202106676