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다차원 탄소재료 연구단
다차원 탄소재료 연구단
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Charting the Outer Helmholtz Plane and the Role of Nitrogen Doping in the Oxygen Reduction Reaction Conducted in Alkaline Media Using Nonprecious Metal Catalysts

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Title
Charting the Outer Helmholtz Plane and the Role of Nitrogen Doping in the Oxygen Reduction Reaction Conducted in Alkaline Media Using Nonprecious Metal Catalysts
Author(s)
Stanfield Youngwon Lee; Dong Young Chung; Myeong Jae Lee; Yun Sik Kang; Heejong Shin; Mi-Ju Kim; Christopher W. Bielawski; Yung-Eun Sung
Publication Date
2016-11
Journal
JOURNAL OF PHYSICAL CHEMISTRY C, v.120, no.43, pp.24511 - 24520
Publisher
AMER CHEMICAL SOC
Abstract
This study was focused on elucidating the origin of the catalytic activity displayed by non-precious-metal-based oxygen reduction reaction (ORR) catalysts before and after heat treatment. Electrochemical measurements were recorded using a series of metal phthalocyanines calculated to exhibit varying oxygen adsorption energies before and after heat treatment at a temperature sufficiently high to facilitate degradation. Collectively, the results indicate that while the oxygen adsorption is germane to the catalytic activity before heat treatment, the ORR appears to proceed through a different pathway that is not dependent on adsorption energy after heat treatment. These conclusions help to explain the high catalytic activities exhibited by carbon- or nitrogen-based materials containing metal ions after heat treatment and may lead to the realization of substitutes for ORR catalysts that utilize precious transition metals. (Chemical Equation Presented). © 2016 American Chemical Society
URI
https://pr.ibs.re.kr/handle/8788114/3245
ISSN
1932-7447
Appears in Collections:
Center for Multidimensional Carbon Materials(다차원 탄소재료 연구단) > Journal Papers (저널논문)
Center for Nanoparticle Research(나노입자 연구단) > Journal Papers (저널논문)
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