Abstract
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.
Original language | English |
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Pages (from-to) | 30992-30998 |
Number of pages | 7 |
Journal | ACS Applied Materials and Interfaces |
Volume | 11 |
Issue number | 34 |
DOIs | |
State | Published - 28 Aug 2019 |
Keywords
- cobalt nitride
- Dendrite-free
- lithiophilic structure
- lithium anode
- nanobrush