Competitive Redox Chemistries in Vanadium Niobium Oxide for Ultrafast and Durable Lithium Storage

Nano-Micro Letters

Article

Xunhui Xiong¹  Huiying Huang¹  Bote Zhao¹  Xiaobo Ding¹  Jianhao Lin¹ 

[1] School of Environment and Energy, Guangdong Provincial Key Laboratory of Advanced Energy Storage Materials, South China University of Technology, 510640, Guangzhou, People’s Republic of China;

关键词: Niobium pentoxide;    Capacity decay;    Over-reduction;    Vanadium niobium oxide;    Lithium-ion capacitor;   

DOI  :  10.1007/s40820-023-01172-9

 received in 2023-05-08, accepted in 2023-07-15,  发布年份 2023

来源: Springer

【 摘 要 】

tsThe over-reduction from Nb5+ to Nb3+ in the lithiation process have been demonstrated to be the critical reason for the capacity decay of Nb2O5 for the first time.A novel competitive redox strategy has been proposed to suppress the over-reduction of Nb5+ to Nb3+, which can be achieved by the incorporation of vanadium to form a new rutile VNbO4 anode.The performance of VNbO4 anode designed in this study stands among the best in cycle stability.

【 授权许可】

CC BY   
© Shanghai Jiao Tong University 2023

【 图 表 】

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