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.