A novel Mo8.7Nb6.1Ox@NCs egg-nest composite structure as superior anode material for lithium-ion storage
Anode materials of lithium-ion batteries (LIBs) endowed with high-rate performance and fast charging capability are crucial for future energy storage systems. Here, Mo 8.7 Nb 6.1 O x @NCs (nitrogen-doped carbon nanotubes, NCs) egg-nest structure synthesized by an in-situ solvothermal method is repor...
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Veröffentlicht in: | Rare metals 2022-08, Vol.41 (8), p.2645-2654 |
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Hauptverfasser: | , , , , , , |
Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | Anode materials of lithium-ion batteries (LIBs) endowed with high-rate performance and fast charging capability are crucial for future energy storage systems. Here, Mo
8.7
Nb
6.1
O
x
@NCs (nitrogen-doped carbon nanotubes, NCs) egg-nest structure synthesized by an in-situ solvothermal method is reported. The Mo
8.7
Nb
6.1
O
x
@NCs egg-nest exhibits high embedding potential, high pseudo-capacitance contribution rate (87.5%), and low charge transfer resistance. The electrochemical results show that Mo
8.7
Nb
6.1
O
x
@NCs demonstrates excellent rate performance (reversible capacity of 196.8 mAh·Ag
−1
at 10 A·Ag
−1
, and full charging only takes 1.1 min) and excellent cycle stability (reversible capacity of 513 mAh.Ag
−1
at 0.5 A.Ag
−1
combined with a capacity loss of only 5.4% after 100 cycles), outperforming the state-of-the-art literature. The full cell is assembled with Mo
8.7
Nb
6.1
O
x
@NCs as the anode and LiFePO
4
as the cathode, which can provide a remarkably high energy density of 731.9 Wh·kg
−1
, indicating its excellent prospect for practical applications.
Graphical abstract |
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ISSN: | 1001-0521 1867-7185 |
DOI: | 10.1007/s12598-021-01952-5 |