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Superior Sodium Storage Performance of Additive-Free V2O5 Thin Film Electrode.
作者:[3] Yanwei Li, Canzheng Liu, Zhiping Xie, Jinhuan Yao* and Guozhong Cao*
關鍵字:V2O5
論文來源:期刊
具體來源:Journal of Materials Chemistry A, 2017, 5, 16590-16594.
發表時間:2018年

A binder- and conductive-agent-free V2O5 thin film electrode was

fabricated by a facile and cost-efficient cathodic deposition method

directly on stainless steel substrates followed by annealing at 300 C in

air for 1 h. The V2O5 film is approximately 1 mm in thickness and

consists of layer-by-layer stacked nanosheets. When used as

a cathode for sodium ion batteries, the V2O5 thin film electrode

exhibits a high reversible discharge capacity (174 mA h g1 at 200 mA

g1), excellent cycling stability (almost 100% capacity retention over

200 cycles at 1 A g1), and outstanding rate capability (retaining

a capacity of 124 mA h g1 at 5 A g1). Cyclic voltammetric analyses

reveal that pseudocapacity-dominated charge storage of sodium ions

accounts for the superior performance.

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