Effect of cobalt doping on electrochemical properties of sprayed nickel oxide thin films

被引：0

作者：

Kate R.S. ^{[1
]}

Deokate R.J. ^{[1
]}

机构：

[1] Vidya Pratishthan's Arts, Science and Commerce College, 13, Baramati-413, MS

来源：

Deokate, R.J. (rjdeokate@gmail.com) | 1600年 / KeAi Communications Co.卷 / 03期

关键词：

Cobalt doping; Cyclic voltammetry; Electrochemical supercapacitors; NiO; Spray pyrolysis;

D O I：

10.1016/j.mset.2020.06.008

中图分类号：

学科分类号：

摘要：

The nickel oxide (NiO) thin films are prepared with different level of cobalt (Co) doping (2–10 wt%) on conducting (FTO) by using spray pyrolysis technique. The effect of Co doping on the microstructure and electrochemical performance of NiO thin film electrodes are thoroughly investigated. The X-ray diffraction results exhibited the polycrystalline cubic NiO structure with (1 1 1) as preferential orientation. The XPS analysis revealed existence of Co in NiO thin films. The field emission scanning electron microscopy (FE-SEM) of 4% Co:NiO thin films presented porous surface morphology. The maximum specific capacitance 835F. g−1 is attained at scan rate of 5 mV s−1 from cyclic voltammetry in 2 M KOH electrolyte for 4% Co doped NiO thin film. Further, exhibited the maximum specific capacitance of 246.80F.g−1 at current density of 0.2 mA/cm2 with 96% capacity retention after 1000 cycle. © 2020

引用

页码：830 / 839

页数：9

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