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

doi:10.1149/1.2916442

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

Department of Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

22 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 language	English
Pages (from-to)	A112-A115
Journal	Electrochemical and Solid-State Letters
Volume	11
Issue number	7
DOIs	https://doi.org/10.1149/1.2916442
Publication status	Published - 2008

ASJC Scopus subject areas

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

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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.",

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AU - Ahn, Hyo Jin

AU - Sung, Yung Eun

AU - Kim, Won Bae

AU - Seong, Tae Yeon

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AB - 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.

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

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