Electrochemical activation induced multi-valence variation of (NH4)2V4O9 as a high-performance cathode material for zinc-ion batteries

Electrochemical activation induced multi-valence variation of (NH4)2V4O9 as a high-performance cathode material for zinc-ion batteries

In this paper, we found that (NH4)2V4O9 undergoes an electrochemical activation process in the first charging process at ∼1.4 V (vs. Zn2+/Zn), leading to a significant improvement of capacity and cycling stability. The activated vanadium oxides delivered a high specific capacity of 477 mA h g−1 at 5...

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Veröffentlicht in:Chemical communications (Cambridge, England) England), 2021-04, Vol.57 (29), p.3615-3618
Hauptverfasser: Gan, Zhiwei, Chen, Lineng, Xiong, Fangyu, Cai, Xinyin, Cui, Wenjun, Xiahan Sang, An, Qinyou, Wu, Liming
Format: Artikel
Sprache:eng
Schlagworte:
Cycles
Electrochemical activation
Electrode materials
Rechargeable batteries
Stability
Vanadium oxides
Zinc
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Zusammenfassung:In this paper, we found that (NH4)2V4O9 undergoes an electrochemical activation process in the first charging process at ∼1.4 V (vs. Zn2+/Zn), leading to a significant improvement of capacity and cycling stability. The activated vanadium oxides delivered a high specific capacity of 477 mA h g−1 at 50 mA g−1 and outstanding cycling stability with 97.7% capacity retention after 5000 cycles at 15 A g−1.
ISSN:1359-7345
1364-548X
DOI:10.1039/d1cc00360g