Title :
Study of electrochemical supercapacitors utilizing carbon nanotubes electrodes and PVA-hybrid polyacid electrolytes
Author :
Zhang, Yanping ; Zhang, Zhejuan ; Li, Haibo ; Pan, Likun ; Gao, Yang ; Pang, Feryan ; Sun, Chuo ; Sun, Xiaowei ; Kang Tay, Beng
Author_Institution :
Dept. of Phys., East China Normal Univ., Shanghai
Abstract :
Carbon nanotubes (CNTs) synthesized on copper and nickel alloy foil by low pressure chemical vapor deposition were employed as the electrodes of the electrochemical supercapacitors (ESs). A mixture of poly(vinyl alcohol), phosphomolybdic acid (PMA) and phosphotungstic acid (PTA) were used as the electrolyte. The surface morphology and structure of as-grown CNTs were observed by scanning electron microscope and Raman spectroscopy. The electrochemical properties of the ESs were investigated by cyclic voltammetry and galvanic charge-discharge measurements. The results showed that with the increase of PMA to 40%, the specific capacitance of the as-made ESs reaches the highest 10.7F/g.
Keywords :
carbon nanotubes; chemical vapour deposition; supercapacitors; surface morphology; C; Raman spectroscopy; carbon nanotubes electrodes; cyclic voltammetry; electrochemical supercapacitors; galvanic charge-discharge measurements; low pressure chemical vapor deposition; nickel alloy foil; phosphomolybdic acid; phosphotungstic acid; scanning electron microscope; surface morphology; Carbon nanotubes; Chemical vapor deposition; Copper; Electrodes; Electronic switching systems; Nickel alloys; Raman scattering; Scanning electron microscopy; Supercapacitors; Surface morphology;
Conference_Titel :
Nanoelectronics Conference, 2008. INEC 2008. 2nd IEEE International
Conference_Location :
Shanghai
Print_ISBN :
978-1-4244-1572-4
Electronic_ISBN :
978-1-4244-1573-1
DOI :
10.1109/INEC.2008.4585480
