Electrochemical and catalytic properties of V2O5/Al2O3 in rechargeable Li–O2 batteries

Sung Hoon Lim; Do Hyung Kim; Ji Young Byun; Bok Ki Kim; Woo Young Yoon

doi:10.1016/j.electacta.2013.06.045

Electrochemical and catalytic properties of V₂O₅/Al₂O₃ in rechargeable Li–O₂ batteries

Sung Hoon Lim, Do Hyung Kim, Ji Young Byun, Bok Ki Kim, Woo Young Yoon

Department of Materials Science and Engineering

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

19 Citations (Scopus)

Abstract

An Al₂O₃-supported V₂O₅ composite (V₂O₅/Al₂O₃) was synthesized and its role in controlling oxygen reduction/evolution reaction during Li–O₂ battery operation was studied. The prepared V₂O₅/Al₂O₃ composite catalyst was systematically characterized using X-ray diffraction, scanning electron microscopy, and particle size analysis. Energy-dispersive X-ray spectroscopic measurements confirmed the uniform distribution of V₂O₅ in the Al₂O₃ support catalyst. Li–O₂ cells using the V₂O₅/Al₂O₃ composite as the cathode catalyst showed lower overpotentials than V₂O₅–carbon composites and pure carbon cathodes. The cyclic behavior confirmed that the catalytic effect of the prepared composite not only reduced the overpotentials, but also improved the specific capacities.

Original language	English
Pages (from-to)	681-685
Number of pages	5
Journal	Electrochimica Acta
Volume	107
DOIs	https://doi.org/10.1016/j.electacta.2013.06.045
Publication status	Published - 2013 Sept 1

Keywords

Catalyst support
Lithium–air battery
Lithium–oxygen battery
Vanadium pentoxide

ASJC Scopus subject areas

Chemical Engineering(all)
Electrochemistry

Access to Document

10.1016/j.electacta.2013.06.045

Cite this

@article{4f70b31efc66496eb55b7ac57c8ae6f2,

title = "Electrochemical and catalytic properties of V2O5/Al2O3 in rechargeable Li–O2 batteries",

abstract = "An Al2O3-supported V2O5 composite (V2O5/Al2O3) was synthesized and its role in controlling oxygen reduction/evolution reaction during Li–O2 battery operation was studied. The prepared V2O5/Al2O3 composite catalyst was systematically characterized using X-ray diffraction, scanning electron microscopy, and particle size analysis. Energy-dispersive X-ray spectroscopic measurements confirmed the uniform distribution of V2O5 in the Al2O3 support catalyst. Li–O2 cells using the V2O5/Al2O3 composite as the cathode catalyst showed lower overpotentials than V2O5–carbon composites and pure carbon cathodes. The cyclic behavior confirmed that the catalytic effect of the prepared composite not only reduced the overpotentials, but also improved the specific capacities.",

keywords = "Catalyst support, Lithium–air battery, Lithium–oxygen battery, Vanadium pentoxide",

author = "Lim, {Sung Hoon} and Kim, {Do Hyung} and Byun, {Ji Young} and Kim, {Bok Ki} and Yoon, {Woo Young}",

note = "Funding Information: This work was also supported by the National Research Foundation of Korea (NRF) funded by the Korea Government (MEST) ( 2012-0008793 ). The microstructures of the samples were observed using the scanning electron microscopic facility located in the Korea Basic Science Institute, Seoul Center, Republic of Korea. The FeCrAl foam was obtained from Alantum Corporation. Publisher Copyright: {\textcopyright} 2013 Elsevier Ltd",

year = "2013",

month = sep,

day = "1",

doi = "10.1016/j.electacta.2013.06.045",

language = "English",

volume = "107",

pages = "681--685",

journal = "Electrochimica Acta",

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publisher = "Elsevier Limited",

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T1 - Electrochemical and catalytic properties of V2O5/Al2O3 in rechargeable Li–O2 batteries

AU - Lim, Sung Hoon

AU - Kim, Do Hyung

AU - Byun, Ji Young

AU - Kim, Bok Ki

AU - Yoon, Woo Young

N1 - Funding Information: This work was also supported by the National Research Foundation of Korea (NRF) funded by the Korea Government (MEST) ( 2012-0008793 ). The microstructures of the samples were observed using the scanning electron microscopic facility located in the Korea Basic Science Institute, Seoul Center, Republic of Korea. The FeCrAl foam was obtained from Alantum Corporation. Publisher Copyright: © 2013 Elsevier Ltd

PY - 2013/9/1

Y1 - 2013/9/1

N2 - An Al2O3-supported V2O5 composite (V2O5/Al2O3) was synthesized and its role in controlling oxygen reduction/evolution reaction during Li–O2 battery operation was studied. The prepared V2O5/Al2O3 composite catalyst was systematically characterized using X-ray diffraction, scanning electron microscopy, and particle size analysis. Energy-dispersive X-ray spectroscopic measurements confirmed the uniform distribution of V2O5 in the Al2O3 support catalyst. Li–O2 cells using the V2O5/Al2O3 composite as the cathode catalyst showed lower overpotentials than V2O5–carbon composites and pure carbon cathodes. The cyclic behavior confirmed that the catalytic effect of the prepared composite not only reduced the overpotentials, but also improved the specific capacities.

AB - An Al2O3-supported V2O5 composite (V2O5/Al2O3) was synthesized and its role in controlling oxygen reduction/evolution reaction during Li–O2 battery operation was studied. The prepared V2O5/Al2O3 composite catalyst was systematically characterized using X-ray diffraction, scanning electron microscopy, and particle size analysis. Energy-dispersive X-ray spectroscopic measurements confirmed the uniform distribution of V2O5 in the Al2O3 support catalyst. Li–O2 cells using the V2O5/Al2O3 composite as the cathode catalyst showed lower overpotentials than V2O5–carbon composites and pure carbon cathodes. The cyclic behavior confirmed that the catalytic effect of the prepared composite not only reduced the overpotentials, but also improved the specific capacities.

KW - Catalyst support

KW - Lithium–air battery

KW - Lithium–oxygen battery

KW - Vanadium pentoxide

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JO - Electrochimica Acta

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