Electrodeposition of PPy/HNO3 Film and its Capacitive Behaviour

5th Annual International Conference on Material Engineering and Application

工业技术（总论）;材料科学

Chen, Yong^1 ; Zhang, Xia^1 ; Juan Li, Juan^1 ; Xu, Hui^1

College of Perochemical Engineering, Lanzhou University of Technology, Lanzhou

730050, China^1

关键词: Electrochemical impedance spectra;    Electrochemical performance;    Galvanostatic charge discharges;    Scan rates;    Special structure;    Specific capacitance;    Stainless steel mesh;    Supercapacitor application;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/484/1/012045/pdf
DOI  :  10.1088/1757-899X/484/1/012045

来源: IOP

【 摘 要 】

Through cyclic voltammetry polypyrrole/nitric acid (PPy/HNO3) film was electrodeposited on stainless steel mesh. Its special structure like corals was demonstrated by scanning electron microscopy (SEM). Various approaches such as cyclic voltammetry (CV), galvanostatic charge-discharge (GCD) and electrochemical impedance spectrum (EIS) were imployed to investigate the electrochemical performance of PPy/HNO3 film. The results showed that the specific capacitance of PPy/0.5M HNO3 can reach to 596 F•g-1 at a current density of 5 mA•cm-2; even 1000 cycles the specific capacitance still maintained 96% at a scan rate of 50mV•s-1. All data illustrate that PPy/HNO3 film may become a proming candidate for supercapacitor applications.