Investigation of electrochemical properties of RuO2 thin films modified by e-beam irradiation

Kyung Hwa Kim; Gil Pyo Kim; In Kyu Song; Ki Ho Yang; Byung Cheol Lee; Sung Hyeon Baeck

doi:10.1016/j.tsf.2010.12.142

Investigation of electrochemical properties of RuO₂ thin films modified by e-beam irradiation

Kyung Hwa Kim, Gil Pyo Kim, In Kyu Song, Ki Ho Yang, Byung Cheol Lee, Sung Hyeon Baeck

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

Abstract

The influence of electron beam irradiation on the electrochemical properties of electrodeposited RuO₂ thin films was investigated using a 1 MeV electron beam. Crystallinity change before and after electron beam irradiation was investigated by X-ray diffraction, and the oxidation state of ruthenium was determined by X-ray photoelectron spectroscopy. Scanning electron microscopy was utilized to examine the morphology of the films. The results show that electron beam irradiation altered the oxidation state of ruthenium and increased crystallinity. Cyclic voltammetry was employed to evaluate the electrochemical properties of the synthesized RuO₂ films in terms of their application as electrodes of electrochemical capacitors. RuO₂ irradiated with 40 kGy showed 2.7 times higher capacitance (520 Fg^-1) than the as-electrodeposited sample (190 Fg^-1).

Original language	English
Pages (from-to)	3086-3089
Number of pages	4
Journal	Thin Solid Films
Volume	519
Issue number	10
DOIs	https://doi.org/10.1016/j.tsf.2010.12.142
State	Published - 1 Mar 2011

Bibliographical note

Funding Information:
This work was supported by a Korea Science and Engineering Foundation (KOSEF) grant funded by the Korean government ( 2010-0018632 ).

Keywords

Electrodeposition
Electron beam irradiation
Energy storage
Ruthenium oxide (RuO)

Access to Document

10.1016/j.tsf.2010.12.142

Cite this

@article{a7f90538324f4fa781a424cb87083103,

title = "Investigation of electrochemical properties of RuO2 thin films modified by e-beam irradiation",

abstract = "The influence of electron beam irradiation on the electrochemical properties of electrodeposited RuO2 thin films was investigated using a 1 MeV electron beam. Crystallinity change before and after electron beam irradiation was investigated by X-ray diffraction, and the oxidation state of ruthenium was determined by X-ray photoelectron spectroscopy. Scanning electron microscopy was utilized to examine the morphology of the films. The results show that electron beam irradiation altered the oxidation state of ruthenium and increased crystallinity. Cyclic voltammetry was employed to evaluate the electrochemical properties of the synthesized RuO2 films in terms of their application as electrodes of electrochemical capacitors. RuO2 irradiated with 40 kGy showed 2.7 times higher capacitance (520 Fg-1) than the as-electrodeposited sample (190 Fg-1).",

keywords = "Electrodeposition, Electron beam irradiation, Energy storage, Ruthenium oxide (RuO)",

author = "Kim, {Kyung Hwa} and Kim, {Gil Pyo} and Song, {In Kyu} and Yang, {Ki Ho} and Lee, {Byung Cheol} and Baeck, {Sung Hyeon}",

note = "Funding Information: This work was supported by a Korea Science and Engineering Foundation (KOSEF) grant funded by the Korean government ( 2010-0018632 ).",

year = "2011",

month = mar,

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doi = "10.1016/j.tsf.2010.12.142",

language = "English",

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T1 - Investigation of electrochemical properties of RuO2 thin films modified by e-beam irradiation

AU - Kim, Kyung Hwa

AU - Kim, Gil Pyo

AU - Song, In Kyu

AU - Yang, Ki Ho

AU - Lee, Byung Cheol

AU - Baeck, Sung Hyeon

N1 - Funding Information: This work was supported by a Korea Science and Engineering Foundation (KOSEF) grant funded by the Korean government ( 2010-0018632 ).

PY - 2011/3/1

Y1 - 2011/3/1

N2 - The influence of electron beam irradiation on the electrochemical properties of electrodeposited RuO2 thin films was investigated using a 1 MeV electron beam. Crystallinity change before and after electron beam irradiation was investigated by X-ray diffraction, and the oxidation state of ruthenium was determined by X-ray photoelectron spectroscopy. Scanning electron microscopy was utilized to examine the morphology of the films. The results show that electron beam irradiation altered the oxidation state of ruthenium and increased crystallinity. Cyclic voltammetry was employed to evaluate the electrochemical properties of the synthesized RuO2 films in terms of their application as electrodes of electrochemical capacitors. RuO2 irradiated with 40 kGy showed 2.7 times higher capacitance (520 Fg-1) than the as-electrodeposited sample (190 Fg-1).

AB - The influence of electron beam irradiation on the electrochemical properties of electrodeposited RuO2 thin films was investigated using a 1 MeV electron beam. Crystallinity change before and after electron beam irradiation was investigated by X-ray diffraction, and the oxidation state of ruthenium was determined by X-ray photoelectron spectroscopy. Scanning electron microscopy was utilized to examine the morphology of the films. The results show that electron beam irradiation altered the oxidation state of ruthenium and increased crystallinity. Cyclic voltammetry was employed to evaluate the electrochemical properties of the synthesized RuO2 films in terms of their application as electrodes of electrochemical capacitors. RuO2 irradiated with 40 kGy showed 2.7 times higher capacitance (520 Fg-1) than the as-electrodeposited sample (190 Fg-1).

KW - Electrodeposition

KW - Electron beam irradiation

KW - Energy storage

KW - Ruthenium oxide (RuO)

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