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Lithium metal is a promising anode material for high-energy-density batteries due to its exceptionally high theoretical capacity. However, challenges such as non-uniform deposition of lithium during charge/discharge cycling, which leads to the growth of lithium dendrites, impede the commercialization of lithium-metal anodes. Herein, we developed a lithophilic NiCo2O4 (NCO) nanoneedle-modified carbonized cotton napkin (CCN) to serve as a low-cost and lightweight interlayer for lithium metal anodes. The three-dimensional carbon network provides superior electronic and ionic conductivity, while the high lithiophilicity of NCO effectively reduces the nucleation overpotential of lithium and suppresses dendrite formation. Consequently, the NCO@CCN-Li symmetric cell demonstrates a stable cycling performance of 700 h at 20 mA cm- 2/10 mAh cm- 2 and maintains a stable cycle for 350 h even when the current density is increased to 40 mA cm- 2. Furthermore, the full cell paired with the LiFePO4 cathode (10.5 mg cm- 2) retains a discharge specific capacity of 134.5 mAh g- 1 after 200 cycles, with a capacity retention rate of 99.6 % and a coulombic efficiency of 99.7 %. This work provides valuable insights for the development of high-energy-density lithium-metal batteries.
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JOURNAL OF POWER SOURCES
ISSN: 0378-7753
Year: 2025
Volume: 645
8 . 1 0 0
JCR@2023
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ESI Highly Cited Papers on the List: 0 Unfold All
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30 Days PV: 0