Scalable synthesis of Li3VO4/nitrogen doped carbon fibers toward self-adaptive Li-ion storage

• Published in: Journal of alloys and compounds Vol. 893; p. 162178
• Main Authors: Xu, Zhen, Lu, Junlin, Li, Daobo, Zhang, Dongmei, Yang, Dizi, Ni, Shibing
• Format: Journal Article
• Language: English
• Published: Lausanne Elsevier B.V 10.02.2022; Elsevier BV
• Subjects: Anode; Biomass; Carbon fibers; Fibers; Ion storage; Li-ion storage; Li3VO4; Lithium ions; Low cost; Reaction kinetics; Li-ion storage; Biomass; Anode; Li3VO4; Fibers
• ISSN: 0925-8388; 1873-4669
• DOI: 10.1016/j.jallcom.2021.162178

•Tuning the reaction kinetics of Li3VO4-based electrode via a facile strategy.•Design Li3VO4/N doped C fibers via a biomass derived approach.•Achieving ultra-high capacity and superior rate performance in the Li3VO4/NC Fs. [Display omitted] Li3VO4/nitrogen doped carbon fibers (LVO/NCFs) were prepared via a low cost and scalable biomass-derived approach. High and gradually increasing capacitive lithium storage for the LVO/NCFs during cycling is induced by self-adaptive reaction kinetics, leading to outstanding cycle stability and superb rate performance. The LVO/NCFs exhibit discharge specific capacity of 774 mAh g−1 at the current of 0.2 A g−1 after 500 cycles, and 419 mAh g−1 at 2.0 A g−1 after 1000 cycles. Even after period rate testing from 0.2 to 3.0 A g−1 over 250 cycles, the LVO/NCFs still revert to high capacity of 616 mAh g−1 when the current is decreasing to 0.2 A g−1. The low cost and scalable biomass-derived synthesis and the outstanding comprehensive lithium storage performance of the LVO/NCFs endow it with great promising for practical application.