A High‐Rate V2O5 Hollow Microclew Cathode for an All‐Vanadium‐Based Lithium‐Ion Full Cell |
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| Authors: | Pengfei Zhang Luzi Zhao Qinyou An Qiulong Wei Liang Zhou Xiujuan Wei Jinzhi Sheng Liqiang Mai |
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| Affiliation: | State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Hubei, Wuhan, P. R. China |
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| Abstract: | V2O5 hollow microclews (V2O5‐HMs) have been fabricated through a facile solvothermal method with subsequent calcination. The synthesized V2O5‐HMs exhibit a 3D hierarchical structure constructed by intertangled nanowires, which could realize superior ion transport, good structural stability, and significantly improved tap density. When used as the cathodes for lithium‐ion batteries (LIBs), the V2O5‐HMs deliver a high capacity (145.3 mAh g‐1) and a superior rate capability (94.8 mAh g‐1 at 65 C). When coupled with a lithiated Li3VO4 anode, the all‐vanadium‐based lithium‐ion full cell exhibits remarkable cycling stability with a capacity retention of 71.7% over 1500 cycles at 6.7 C. The excellent electrochemical performance demonstrates that the V2O5‐HM is a promising candidate for LIBs. The insight obtained from this work also provides a novel strategy for assembling 1D materials into hierarchical microarchitectures with anti‐pulverization ability, excellent electrochemical kinetics, and enhanced tap density. |
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| Keywords: | all‐vanadium lithium‐ion full cells high rates hollow microclews nanowires V2O5 |
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