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- W4323871128 abstract "The introduction of protective layers and defects in electrodes is an effective strategy to improve the reversible capacity and cyclic stability of batteries. In the present work, using a cuprous oxide template, copper vanadate oxide with a diverse morphology is synthesized by an in-situ etching process followed by calcination. Moreover, oxygen vacancies and an amorphous copper vanadium oxide shell are successfully introduced into moniliform Cu3V2O8 (denote as m-Cu3V2O8@aCVO) by changing the template morphology from Cu2O polyhedrons to polypyrrole-coated Cu2O nanowires. The electrochemical performances of the samples are evaluated using a lithium half-cell as the anode. The m-Cu3V2O8@aCVO manifests superior rate performance (428 mAh g−1 at 5 A g−1) and cyclic stability (938 mAh g−1 is obtained after 200 cycles), the microstructure is well-maintained after cycles. The Li-storage mechanism of the electrode changed from diffusion-controlled to pseudo-capacitance-controlled due to the introduction of oxygen vacancies. The excellent electrochemical performance could be attributed to the introduction of oxygen vacancies and the protective layer, which improves the pseudo-capacitance and structural durability of the electrode during the cyclic process. This work provides new insight into the design of high-performance anodes for energy storage applications." @default.
- W4323871128 created "2023-03-11" @default.
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- W4323871128 date "2023-05-01" @default.
- W4323871128 modified "2023-10-18" @default.
- W4323871128 title "Introduction of oxygen vacancies and amorphous layers into copper vanadium oxide for better lithium ion battery performance" @default.
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- W4323871128 doi "https://doi.org/10.1016/j.jpowsour.2023.232918" @default.
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