Jump to main content
Jump to site search


Capacitive performance of ruthenium-coordinated polypyrrole

Abstract

The ruthenium coordinated polypyrrole electrodeposited on carbon paper substrate is developed as active electrode material of supercapacitors. The PPy-Ru(12) was formed by electrochemical polymerization of ruthenium chloride coordinated pyrrole monomer with saturation coordination time of 12 h. The capacitance of PPy declined from 249 at 1.0 A g-1 to 102 F g-1 at 20.0 A g-1 with capacitance retention of 40.9%. The capacitance of PPy-Ru(12) declined from 618 at 1.0 A g-1 to 301 F g-1 at 20.0 A g-1 with capacitance retention of 48.7%, presenting higher rate capability. The coordination process could induce bipolarons to improve the electrochemical conductivity and rate capability. The capacity retention ratio was highly increased from 79.4% for PPy to 91.4% for PPy-Ru(12) after 2000 cycles at 20.0 A g-1, presenting superior cycling stability of PPy-Ru(12). The coordination reaction between pyrrole monomer and RuCl3 led to forming tetrahedron structure that restrained volume swelling or shrinking of PPy during the charge-discharge process, accordingly causing the improved electrochemical cycling stability. In addition, all-solid-state PPy-Ru(12) supercapacitor showed capacitance of 122 F g-1 at 2.0 A g-1 and capacity retention ratio of 82.8% after 500 cycles. This PPy-Ru(12) with good capacitance performance and electrochemical stability presents the promising application as supercapacitor electrode material.

Back to tab navigation

Publication details

The article was received on 07 Apr 2017, accepted on 03 Aug 2017 and first published on 03 Aug 2017


Article type: Paper
DOI: 10.1039/C7NJ01151B
Citation: New J. Chem., 2017, Accepted Manuscript
  •   Request permissions

    Capacitive performance of ruthenium-coordinated polypyrrole

    Y. Zhou and Y. Xie, New J. Chem., 2017, Accepted Manuscript , DOI: 10.1039/C7NJ01151B

Search articles by author

Spotlight

Advertisements