Journal
SUSMAT
Volume 2, Issue 1, Pages 104-112Publisher
WILEY
DOI: 10.1002/sus2.43
Keywords
Artificial modification layer; Li metal anode; LiAlO2-PVDF; Spin-coating
Categories
Funding
- NationalKeyResearch and Development ProgramofChina [2017YFA0701001]
- FundamentalResearch Founds for the CentralUniversities [ZYGX2019J024]
- NationalNatural Science Foundation of China [52002052]
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This study demonstrates the fabrication of a LiAlO2-PVDF composite modification layer on the surface of Li metal, which enhances the stability and electrochemical performance of Li metal batteries. The LiAlO2-PVDF@Li electrode shows an ultra-long lifespan and a high capacity retention rate in the LiAlO2-PVDF@Li | LiFePO4 full cell.
Li has garnered enormous attention for next-generation Li metal batteries owing to its remarkable theoretical capacity. Unfortunately, as an anode, Li suffers from serious safety issues and fast capacity fading due to the formation of Li dendrites, which hinders the practical application of Li anode. Herein, a LiAlO2-PVDF composite modification layer is fabricated on the surface of Li metal to enhance its stability and electrochemical performance. Benefitting from the synergetic effects of high Li+ conductivity, high Li+ transference number, excellent mechanical properties, superior chemical durability, and compactness of the modification layer, the LiAlO2-PVDF@Li electrode delivers an ultra-long lifespan and a high capacity retention rate in the LiAlO2-PVDF@Li | LiFePO4 full cell. The proposed strategy provides a new alternative anode for Li metal batteries with high performance and scalable production.
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