Supercapacitive properties of electrodeposited RuO2 electrode in acrylic gel polymer electrolytes

Title
Supercapacitive properties of electrodeposited RuO2 electrode in acrylic gel polymer electrolytes
Authors
Kwang Man KimJi Hyun NamYoung-Gi Lee조원일Jang Myon Ko
Keywords
RuO2; Ruthenium oxide; electrodepoition; Acrylic gel polymer electrolyte; acrylic gel polymer; Supercapacitor; redox peak; Cyclic voltammetry; supercapacitor
Issue Date
2013-10
Publisher
Current applied physics
Citation
VOL 13, NO 8, 1702-1706
Abstract
Hydrous ruthenium oxide (RuO2) is prepared by electrodeposition on a platinum substrate and its supercapacitive properties are characterized adopting acrylic gel polymer electrolytes, such as poly(acrylic acid) (PAA), potassium polyacrylate (PAAK), and poly(2-acrylamido-2-methyl-1-propanesulfonic acid) (PAMPS). The electrodeposited hydrous RuO2 exhibits an amorphous compact stratified morphology with a higher loading (0.15 mg cm−2) than that of a previous report, and shows broad redox peaks on both cathodic and anodic scans in the cyclic voltammetry. In particular, the RuO2 electrode for supercapacitor adopting the PAMPS electrolyte shows the highest specific capacitance of 642 F g−1 at 20 mV s−1. This is due to the efficient utilization of active RuO2 species and greater proton accommodation toward the negative oxygen sites of PAMPS's side chain. In addition, it is possible to improve sustainability against high-rate current with the RuO2 electrode with the PAMPS electrolyte, due to the crosslinks of the gel electrolyte, which support the mechanical strength.
URI
http://pubs.kist.re.kr/handle/201004/46737
ISSN
15671739
Appears in Collections:
KIST Publication > Article
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE