Effect of Pt nanostructures on the electrochemical properties of Co3O4 electrodes for micro-electrochemical capacitors

Hyo Jin Ahn; Tae Yeon Seong

doi:10.1016/j.jallcom.2008.11.144

Effect of Pt nanostructures on the electrochemical properties of Co₃O₄ electrodes for micro-electrochemical capacitors

Hyo Jin Ahn, Tae Yeon Seong

Department of Materials Science and Engineering

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

17 Citations (Scopus)

Abstract

We report on the formation and electrochemical properties of Co₃O₄/Pt nanocomposite electrodes, which were fabricated by an RF magnetron co-sputtering system, for micro-electrochemical capacitors. High-resolution electron microscopy, X-ray diffraction, and X-ray photoelectron spectroscopy examinations are performed to characterize the structural and chemical properties of the Co₃O₄/Pt nanocomposite electrodes. It is shown that the Co₃O₄/Pt6020 nanocomposite electrodes where RF powers of 60 and 20 W were applied to Co₃O₄ and Pt targets, respectively, give capacitance of 391.6 F/cm³ at 100 mV/s along with superb high-rate performance, which is much higher that those of Co₃O₄ only and other nanocomposite electrodes. The improvement is explained in terms of the formation of Co₃O₄-Pt combined nanostructures and their good electrical conductivity.

Original language	English
Pages (from-to)	L8-L11
Journal	Journal of Alloys and Compounds
Volume	478
Issue number	1-2
DOIs	https://doi.org/10.1016/j.jallcom.2008.11.144
Publication status	Published - 2009 Jun 10

Keywords

Eelectrochemical reactions
Electrode materials
Nanostructured materials

ASJC Scopus subject areas

Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

Access to Document

10.1016/j.jallcom.2008.11.144

Cite this

@article{1a549782327c4fe2b84b2b53d9ad8d69,

title = "Effect of Pt nanostructures on the electrochemical properties of Co3O4 electrodes for micro-electrochemical capacitors",

abstract = "We report on the formation and electrochemical properties of Co3O4/Pt nanocomposite electrodes, which were fabricated by an RF magnetron co-sputtering system, for micro-electrochemical capacitors. High-resolution electron microscopy, X-ray diffraction, and X-ray photoelectron spectroscopy examinations are performed to characterize the structural and chemical properties of the Co3O4/Pt nanocomposite electrodes. It is shown that the Co3O4/Pt6020 nanocomposite electrodes where RF powers of 60 and 20 W were applied to Co3O4 and Pt targets, respectively, give capacitance of 391.6 F/cm3 at 100 mV/s along with superb high-rate performance, which is much higher that those of Co3O4 only and other nanocomposite electrodes. The improvement is explained in terms of the formation of Co3O4-Pt combined nanostructures and their good electrical conductivity.",

keywords = "Eelectrochemical reactions, Electrode materials, Nanostructured materials",

author = "Ahn, {Hyo Jin} and Seong, {Tae Yeon}",

note = "Funding Information: This work was supported by the Korea Science and Engineering Foundation (KOSEF) grant funded by the Korea government (MEST) through World Class University program.",

year = "2009",

month = jun,

day = "10",

doi = "10.1016/j.jallcom.2008.11.144",

language = "English",

volume = "478",

pages = "L8--L11",

journal = "Journal of Alloys and Compounds",

issn = "0925-8388",

publisher = "Elsevier BV",

number = "1-2",

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TY - JOUR

T1 - Effect of Pt nanostructures on the electrochemical properties of Co3O4 electrodes for micro-electrochemical capacitors

AU - Ahn, Hyo Jin

AU - Seong, Tae Yeon

N1 - Funding Information: This work was supported by the Korea Science and Engineering Foundation (KOSEF) grant funded by the Korea government (MEST) through World Class University program.

PY - 2009/6/10

Y1 - 2009/6/10

N2 - We report on the formation and electrochemical properties of Co3O4/Pt nanocomposite electrodes, which were fabricated by an RF magnetron co-sputtering system, for micro-electrochemical capacitors. High-resolution electron microscopy, X-ray diffraction, and X-ray photoelectron spectroscopy examinations are performed to characterize the structural and chemical properties of the Co3O4/Pt nanocomposite electrodes. It is shown that the Co3O4/Pt6020 nanocomposite electrodes where RF powers of 60 and 20 W were applied to Co3O4 and Pt targets, respectively, give capacitance of 391.6 F/cm3 at 100 mV/s along with superb high-rate performance, which is much higher that those of Co3O4 only and other nanocomposite electrodes. The improvement is explained in terms of the formation of Co3O4-Pt combined nanostructures and their good electrical conductivity.

AB - We report on the formation and electrochemical properties of Co3O4/Pt nanocomposite electrodes, which were fabricated by an RF magnetron co-sputtering system, for micro-electrochemical capacitors. High-resolution electron microscopy, X-ray diffraction, and X-ray photoelectron spectroscopy examinations are performed to characterize the structural and chemical properties of the Co3O4/Pt nanocomposite electrodes. It is shown that the Co3O4/Pt6020 nanocomposite electrodes where RF powers of 60 and 20 W were applied to Co3O4 and Pt targets, respectively, give capacitance of 391.6 F/cm3 at 100 mV/s along with superb high-rate performance, which is much higher that those of Co3O4 only and other nanocomposite electrodes. The improvement is explained in terms of the formation of Co3O4-Pt combined nanostructures and their good electrical conductivity.

KW - Eelectrochemical reactions

KW - Electrode materials

KW - Nanostructured materials

UR - http://www.scopus.com/inward/record.url?scp=67349115703&partnerID=8YFLogxK

U2 - 10.1016/j.jallcom.2008.11.144

DO - 10.1016/j.jallcom.2008.11.144

M3 - Letter

AN - SCOPUS:67349115703

VL - 478

SP - L8-L11

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

SN - 0925-8388

IS - 1-2

ER -