期刊
ACS APPLIED MATERIALS & INTERFACES
卷 11, 期 34, 页码 30992-30998出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.9b09975
关键词
cobalt nitride; nanobrush; lithiophilic structure; lithium anode; dendrite-free
资金
- National Natural Science Foundation of China [51772249, 51821091]
- Fundamental Research Funds for the Central Universities [G2017KY0308, 3102019JC005]
- National Natural Science Foundation, Innovation Program for Talent, and Post-doctoral Program of Shaanxi Province [2018JM5092, 2019KJXX-066, 2018BSHTDZZ16]
- Hongkong Scholar Program [XJ2017012]
- Key R&D Program of Shaanxi [2017ZDCXL-GY-08-03]
Lithium metal is considered to be a holy grail of the battery anode chemistry due to its large specific capacity. Nevertheless, the uncontrollable formation of lithium dendrites resulting from uneven lithium nucleation/growth and the associated safety risk and short cyclability severely impede the practical use of lithium metal anodes. Herein, we demonstrate a highly lithiophilic cobalt nitride nanobrush on a Ni foam (Co3N/NF) current collector as a stable three-dimensional (3D) framework to inhibit the dendrite formation of lithium. The 3D Co3N/NF nanobrush electrode could enable a low nucleation overpotential for homogeneous deposition of dendrite-free lithium. Compared to the CoO/NF counterpart and the bare Cu foil/Ni foam, the Co3N/NF nanobrush host is of great benefit for enhanced Coulombic efficiencies and longer lifespan at various current densities. The present work will offer a new insight for the exploration of the highly lithiophilic scaffold based on metal nitrides toward high-performance lithium metal anodes.
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