Vertically-aligned Co(OH)2 Nanosheet Films for Flexible All-solid-state Electrochemical Supercapacitor

2017 3rd International Conference on Energy, Environment and Materials Science

能源学;生态环境科学;材料科学

Tian, Yazhou^1 ; Gong, Jiangfeng^1 ; Zhu, Weihua^1

College of Science, Hohai University, Nanjing

210098, China^1

关键词: All-solid state;    All-solid-state supercapacitors;    Aqueous electrolyte;    Cycle stability;    Electrochemical supercapacitor;    Electrode material;    Nanosheet films;    Vertically aligned;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/94/1/012131/pdf
DOI  :  10.1088/1755-1315/94/1/012131

来源: IOP

【 摘 要 】

Vertically-aligned Co(OH)2nanosheets were cathodically electrodeposited on a piece of gold coated polyethylene terephthalate (Au-PET) as an electrode material for supercapacitor. The Co(OH)2electrode showed a high capacitance of 2695 F g-1at 8 A g-1in 1 M KOH aqueous electrolyte. Besides, the films were employed to assemble symmetric all-solid-state supercapacitors with PVA/LiCl gel served as solid electrolyte. The device exhibits an areal capacitance of 50.5 μF cm-2at the current density of 2 μA cm-2accompanied by excellent cycle stability.