Composite supercapacitor electrodes made of activated carbon/PEDOT:PSS and activated carbon/doped PEDOT

Bulletin of materials science

R Nandhini¹  Kalluri Sujith¹  P A Mini¹  T S Sonia¹  S V Nair¹  Balakrishnan Avinash¹  K R V Subramanian¹ 

[1] Amrita Centre for Nanosciences and Molecular Medicine, Ponekkara P. O., Kochi 682 041, Kerala, India$$Amrita Centre for Nanosciences and Molecular Medicine, Ponekkara P. O., Kochi 682 041, Kerala, IndiaAmrita Centre for Nanosciences and Molecular Medicine, Ponekkara P. O., Kochi 682 041, Kerala, India$$

关键词: Carbon materials;    composite materials;    electrodeposition;    energy storage and conversion;    thin films;    conducting polymers.;   

DOI  :  

学科分类：材料工程

来源: Indian Academy of Sciences

【 摘 要 】

In this paper, we report on the high electrical storage capacity of composite electrodes made from nanoscale activated carbon combined with either poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) or PEDOT doped with multiple dopants such as ammonium persulfate (APS) and dimethyl sulfoxide (DMSO). The composites were fabricated by electropolymerization of the conducting polymers (PEDOT:PSS, doped PEDOT) onto the nanoscale activated carbon backbone, wherein the nanoscale activated carbon was produced by ball-milling followed by chemical and thermal treatments. Activated carbon/PEDOT:PSS yielded capacitance values of 640 F g^-1 and 26mF cm^-2, while activated carbon/doped PEDOT yielded capacitances of 1183 F g^-1 and 42 mF cm^-2 at 10 mV s^-1. This is more than five times the storage capacity previously reported for activated carbon�?�PEDOT composites. Further, use of multiple dopants in PEDOT improved the storage performance of the composite electrode well over that of PEDOT:PSS. The composite electrodes were characterized for their electrochemical behaviour, structural and morphological details and electronic conductivity and showed promise as high-performance energy storage systems.

【 授权许可】

Unknown