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
JournalElectrochemical and Solid-State Letters
Volume11
Issue number7
DOIs
Publication statusPublished - 2008 May 26

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Nanoclusters
electrode materials
nanoclusters
Crystalline materials
Thin films
Electrodes
thin films
electrodes
Capacitance
capacitance
High resolution electron microscopy
Electrochemical properties
Structural properties
electron microscopy
radio frequencies
x rays
X ray photoelectron spectroscopy
photoelectron spectroscopy
X ray diffraction
electrical resistivity

ASJC Scopus subject areas

  • Electrochemistry
  • Materials Science(all)

Cite this

Crystalline Ag nanocluster-incorporated RuO2 as an electrode material for thin-film micropseudocapacitors. / Ahn, Hyo Jin; Sung, Yung Eun; Kim, Won Bae; Seong, Tae Yeon.

In: Electrochemical and Solid-State Letters, Vol. 11, No. 7, 26.05.2008.

Research output: Contribution to journalArticle

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