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Updated: Apr 30, 2026

Evaluating the Electrochemical Properties of Supercapacitors using the Three-Electrode System
Published on: January 7, 2022
A polyoxovanadate as an advanced electrode material for supercapacitors
Han-Yi Chen1, Grace Wee, Rami Al-Oweini
1TUM CREATE, 1 CREATE Way, #10-02 CREATE Tower, 138602 Singapore (Singapore); School of Materials Science and Engineering, Nanyang Technological University, 639798 Singapore (Singapore).
Abstract:
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.
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