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

Research output: Contribution to journalArticlepeer-review

31 Citations (Scopus)

Abstract

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
Volume1
Issue number31
DOIs
Publication statusPublished - 2013 Aug 21

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Renewable Energy, Sustainability and the Environment
  • Materials Science(all)

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