Premium
A Polyoxovanadate as an Advanced Electrode Material for Supercapacitors
Author(s) -
Chen HanYi,
Wee Grace,
AlOweini Rami,
Friedl Jochen,
Tan Kim Soon,
Wang Yuxi,
Wong Chui Ling,
Kortz Ulrich,
Stimming Ulrich,
Srinivasan Madhavi
Publication year - 2014
Publication title -
chemphyschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.016
H-Index - 140
eISSN - 1439-7641
pISSN - 1439-4235
DOI - 10.1002/cphc.201400091
Subject(s) - supercapacitor , propylene carbonate , electrode , electrolyte , cyclic voltammetry , electrochemistry , materials science , absolute electrode potential , reference electrode , palladium hydrogen electrode , power density , inorganic chemistry , analytical chemistry (journal) , chemistry , organic chemistry , power (physics) , physics , quantum mechanics
Polyoxovanadate Na 6 V 10 O 28 is investigated for the first time as electrode material for supercapacitors (SCs). The electrochemical properties of Na 6 V 10 O 28 electrodes are studied in Li + ‐containing organic electrolyte (1 M LiClO 4 in propylene carbonate) by galvanostatic charge/discharge and cyclic voltammetry in a three‐electrode configuration. Na 6 V 10 O 28 electrodes exhibit high specific capacitances of up to 354 F g −1 . An asymmetric SC with activated carbon as positive electrode and Na 6 V 10 O 28 as negative electrode is fabricated and exhibits a high energy density of 73 Wh kg −1 with a power density of 312 W kg −1 , which successfully demonstrates that Na 6 V 10 O 28 is a promising electrode material for high‐energy SC applications.