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Effect of Precursor Status on the Transition from Complex to Carbon Shell in a Platinum Core-Carbon Shell Catalyst

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Title
Effect of Precursor Status on the Transition from Complex to Carbon Shell in a Platinum Core-Carbon Shell Catalyst
Author(s)
Song, Jihyeok; Kim, Youngkwang; Bae, Hyo Eun; Sun Young Kang; Jongmin Lee; Karuppannan, Mohanraju; Yung-Eun Sung; Cho, Yong-Hun; Kwon, Oh Joong
Publication Date
2022-05
Journal
ACS Omega, v.7, no.18, pp.15615 - 15624
Publisher
American Chemical Society
Abstract
© 2022 The Authors. Published by American Chemical Society.Encapsulating platinum nanoparticles with a carbon shell can increase the stability of core platinum nanoparticles by preventing their dissolution and agglomeration. In this study, the synthesis mechanism of a platinum core-carbon shell catalyst via thermal reduction of a platinum-aniline complex was investigated to determine how the carbon shell forms and identify the key factor determining the properties of the Pt core-carbon shell catalyst. Three catalysts originating from the complexes with different platinum to carbon precursor ratios were synthesized through pyrolysis. Their structural characteristics were examined using various analysis techniques, and their electrochemical activity and stability were evaluated through half-cell and unit-cell tests. The relationship between the nitrogen to platinum ratio and structural characteristics was revealed, and the effects on the electrochemical activity and stability were discussed. The ratio of the carbon precursor to platinum was the decisive factor determining the properties of the platinum core-carbon shell catalyst.
URI
https://pr.ibs.re.kr/handle/8788114/11948
DOI
10.1021/acsomega.2c00418
ISSN
2470-1343
Appears in Collections:
Center for Nanoparticle Research(나노입자 연구단) > 1. Journal Papers (저널논문)
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