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. (C) 2021 Elsevier B.V. All rights reserved.
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