Multiwall carbon nanotube supported poly(3,4-ethylenedioxythiophene)/manganese oxide nano-composite electrode for super-capacitors
Abbreviated Journal Title
Electrochemical electrodes; CNT/MnO(2) nano-composites; Charge storage; Specific capacitance; CHARGE STORAGE MECHANISM; ELECTROCHEMICAL CAPACITORS; MANGANESE OXIDE; REDOX SUPERCAPACITOR; ANODIC DEPOSITION; RUTHENIUM OXIDE; FILM; ELECTRODES; MNO2; ELECTROCHROMISM; MICROSTRUCTURE; Electrochemistry
MWCNT-PSS/PEDOT/MnO(2) nano-composite electrodes were fabricated by generating pseudo-capacitive poly(3,4-ethylenedioxythiophene) (PEDOT)/MnO(2) nano-structures on poly(styrene sulfonate) (PSS) dispersed multiwalled carbon nanotubes (MWCNTs). PSS dispersed MWCNTs (MWCNT-PSS) facilitated the growth of PEDOT and MnO(2) into nano-rods with large active surface area and good electrical conductivity. The ternary MWCNT-PSS/PEDOT/MnO(2) nano-composite electrode was studied for the application in super-capacitors, and exhibited excellent capacitive behavior between -0.2V and 0.8V (vs. saturated Ag/AgCl electrode) with high reversibility. Specific capacitance of the nano-composite electrode was found as high as 375 Fg(-1). In contrast, specific capacitance of MWCNT-PSS/MnO(2) and MWCNT-PSS nano-composite electrodes is 175 Fg(-1) and 15 Fg(-1), respectively. Based on cyclic voltammetric studies and cycle-life tests, the MWCNT-PSS/PEDOT/MnO(2) nano-composite electrode gave a highly stable and reversible performance up to 2000 cycles. Our studies demonstrate that the synergistic combination of MWCNT-PSS, PEDOT and MnO(2) has advantages over the sum of the individual components. (C) 2009 Elsevier Ltd. All rights reserved.
"Multiwall carbon nanotube supported poly(3,4-ethylenedioxythiophene)/manganese oxide nano-composite electrode for super-capacitors" (2009). Faculty Bibliography 2000s. 2126.