RuO2/MnO2 core-shell nanorods for supercapacitors

Jen Chun Chou, Yu Liang Chen, Min Han Yang, Yu Ze Chen, Chih Chung Lai, Hsin-Tien Chiu, Chi Young Lee, Yu Lun Chueh, Jon Yiew Gan*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

32 Scopus citations


RuO2/MnO2 NRs as an electrode for supercapacitors show a high electrochemical performance with a specific capacitance of 793 F g-1 (based on MnO2) by cyclic voltammetry (CV) at a scan rate of 2 mV s-1 in 1 M Na2SO4 aqueous solution. A good rate capability with a specific capacitance of 556 F g -1 at a current density of 1 A g-1 and a good cycling stability (20% degradation after 1000 cycles) were also achieved. The enhancement of capacitive behavior can be attributed to the conductive RuO 2 template with a series resistance of 0.75 Ω and a charge transfer resistance of 0.75 Ω. The results show that an active material such as a MnO2 hybrid with highly conductive 1D nanowires may greatly improve the electrochemical performance for supercapacitors.

Original languageEnglish
Pages (from-to)8753-8758
Number of pages6
JournalJournal of Materials Chemistry A
Issue number31
StatePublished - 21 Aug 2013

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