Crystalline Ag nanocluster-incorporated RuO2 as an electrode material for thin-film micropseudocapacitors

Hyo Jin Ahn, Yung Eun Sung, Won Bae Kim, Tae Yeon Seong

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

We prepared crystalline Ag nanocluster-incorporated RuO2 electrodes using a radio frequency magnetron cosputtering system for use in thin-film micropseudocapacitors and investigated their structural and electrochemical properties. High-resolution electron microscopy, X-ray diffraction, and X-ray photoelectron spectroscopy results show that crystalline Ag nanoclusters are well dispersed within an amorphous RuO2. The Ag nanocluster-incorporated RuO2 electrodes show much higher capacitance of ∼1306.0 F/ cm3 at 200 mV /s with superb high-rate performance compared to RuO2 -only electrodes. The improved capacitance is explained in terms of the presence of dispersed Ag nanoclusters embedded within the amorphous RuO2 matrix having good electrical conductivity.

Original languageEnglish
Pages (from-to)A112-A115
JournalElectrochemical and Solid-State Letters
Volume11
Issue number7
DOIs
Publication statusPublished - 2008

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Materials Science(all)
  • Physical and Theoretical Chemistry
  • Electrochemistry
  • Electrical and Electronic Engineering

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