Supported core at shell electrocatalysts for fuel cells

Close encounter with reality

Seung Jun Hwang, Sung Jong Yoo, Jungho Shin, Yong Hun Cho, Jong Hyun Jang, Eunae Cho, Yung Eun Sung, SukWoo Nam, Tae Hoon Lim, Seung Cheol Lee, Soo Kil Kim

Research output: Contribution to journalArticle

46 Citations (Scopus)

Abstract

Core at shell electrocatalysts for fuel cells have the advantages of a high utilization of Pt and the modification of its electronic structures toward enhancement of the activities. In this study, we suggest both a theoretical background for the design of highly active and stable core@shell/C and a novel facile synthetic strategy for their preparation. Using density functional theory calculations guided by the oxygen adsorption energy and vacancy formation energy, Pd3Cu1@Pt/C was selected as the most suitable candidate for the oxygen reduction reaction in terms of its activity and stability. These predictions were experimentally verified by the surfactant-free synthesis of Pd3Cu1/C cores and the selective Pt shell formation using a Hantzsch ester as a reducing agent. In a similar fashion, Pd@Pd 4Ir6/C catalyst was also designed and synthesized for the hydrogen oxidation reaction. The developed catalysts exhibited high activity, high selectivity, and 4,000 h of long-term durability at the single-cell level.

Original languageEnglish
Article number1309
JournalScientific Reports
Volume3
DOIs
Publication statusPublished - 2013 Mar 1
Externally publishedYes

Fingerprint

Oxygen
Reducing Agents
Surface-Active Agents
Adsorption
Hydrogen
Esters

ASJC Scopus subject areas

  • General

Cite this

Hwang, S. J., Yoo, S. J., Shin, J., Cho, Y. H., Jang, J. H., Cho, E., ... Kim, S. K. (2013). Supported core at shell electrocatalysts for fuel cells: Close encounter with reality. Scientific Reports, 3, [1309]. https://doi.org/10.1038/srep01309

Supported core at shell electrocatalysts for fuel cells : Close encounter with reality. / Hwang, Seung Jun; Yoo, Sung Jong; Shin, Jungho; Cho, Yong Hun; Jang, Jong Hyun; Cho, Eunae; Sung, Yung Eun; Nam, SukWoo; Lim, Tae Hoon; Lee, Seung Cheol; Kim, Soo Kil.

In: Scientific Reports, Vol. 3, 1309, 01.03.2013.

Research output: Contribution to journalArticle

Hwang, SJ, Yoo, SJ, Shin, J, Cho, YH, Jang, JH, Cho, E, Sung, YE, Nam, S, Lim, TH, Lee, SC & Kim, SK 2013, 'Supported core at shell electrocatalysts for fuel cells: Close encounter with reality', Scientific Reports, vol. 3, 1309. https://doi.org/10.1038/srep01309
Hwang, Seung Jun ; Yoo, Sung Jong ; Shin, Jungho ; Cho, Yong Hun ; Jang, Jong Hyun ; Cho, Eunae ; Sung, Yung Eun ; Nam, SukWoo ; Lim, Tae Hoon ; Lee, Seung Cheol ; Kim, Soo Kil. / Supported core at shell electrocatalysts for fuel cells : Close encounter with reality. In: Scientific Reports. 2013 ; Vol. 3.
@article{861ed7285e1345ed87f057e373b8642e,
title = "Supported core at shell electrocatalysts for fuel cells: Close encounter with reality",
abstract = "Core at shell electrocatalysts for fuel cells have the advantages of a high utilization of Pt and the modification of its electronic structures toward enhancement of the activities. In this study, we suggest both a theoretical background for the design of highly active and stable core@shell/C and a novel facile synthetic strategy for their preparation. Using density functional theory calculations guided by the oxygen adsorption energy and vacancy formation energy, Pd3Cu1@Pt/C was selected as the most suitable candidate for the oxygen reduction reaction in terms of its activity and stability. These predictions were experimentally verified by the surfactant-free synthesis of Pd3Cu1/C cores and the selective Pt shell formation using a Hantzsch ester as a reducing agent. In a similar fashion, Pd@Pd 4Ir6/C catalyst was also designed and synthesized for the hydrogen oxidation reaction. The developed catalysts exhibited high activity, high selectivity, and 4,000 h of long-term durability at the single-cell level.",
author = "Hwang, {Seung Jun} and Yoo, {Sung Jong} and Jungho Shin and Cho, {Yong Hun} and Jang, {Jong Hyun} and Eunae Cho and Sung, {Yung Eun} and SukWoo Nam and Lim, {Tae Hoon} and Lee, {Seung Cheol} and Kim, {Soo Kil}",
year = "2013",
month = "3",
day = "1",
doi = "10.1038/srep01309",
language = "English",
volume = "3",
journal = "Scientific Reports",
issn = "2045-2322",
publisher = "Nature Publishing Group",

}

TY - JOUR

T1 - Supported core at shell electrocatalysts for fuel cells

T2 - Close encounter with reality

AU - Hwang, Seung Jun

AU - Yoo, Sung Jong

AU - Shin, Jungho

AU - Cho, Yong Hun

AU - Jang, Jong Hyun

AU - Cho, Eunae

AU - Sung, Yung Eun

AU - Nam, SukWoo

AU - Lim, Tae Hoon

AU - Lee, Seung Cheol

AU - Kim, Soo Kil

PY - 2013/3/1

Y1 - 2013/3/1

N2 - Core at shell electrocatalysts for fuel cells have the advantages of a high utilization of Pt and the modification of its electronic structures toward enhancement of the activities. In this study, we suggest both a theoretical background for the design of highly active and stable core@shell/C and a novel facile synthetic strategy for their preparation. Using density functional theory calculations guided by the oxygen adsorption energy and vacancy formation energy, Pd3Cu1@Pt/C was selected as the most suitable candidate for the oxygen reduction reaction in terms of its activity and stability. These predictions were experimentally verified by the surfactant-free synthesis of Pd3Cu1/C cores and the selective Pt shell formation using a Hantzsch ester as a reducing agent. In a similar fashion, Pd@Pd 4Ir6/C catalyst was also designed and synthesized for the hydrogen oxidation reaction. The developed catalysts exhibited high activity, high selectivity, and 4,000 h of long-term durability at the single-cell level.

AB - Core at shell electrocatalysts for fuel cells have the advantages of a high utilization of Pt and the modification of its electronic structures toward enhancement of the activities. In this study, we suggest both a theoretical background for the design of highly active and stable core@shell/C and a novel facile synthetic strategy for their preparation. Using density functional theory calculations guided by the oxygen adsorption energy and vacancy formation energy, Pd3Cu1@Pt/C was selected as the most suitable candidate for the oxygen reduction reaction in terms of its activity and stability. These predictions were experimentally verified by the surfactant-free synthesis of Pd3Cu1/C cores and the selective Pt shell formation using a Hantzsch ester as a reducing agent. In a similar fashion, Pd@Pd 4Ir6/C catalyst was also designed and synthesized for the hydrogen oxidation reaction. The developed catalysts exhibited high activity, high selectivity, and 4,000 h of long-term durability at the single-cell level.

UR - http://www.scopus.com/inward/record.url?scp=84874340446&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84874340446&partnerID=8YFLogxK

U2 - 10.1038/srep01309

DO - 10.1038/srep01309

M3 - Article

VL - 3

JO - Scientific Reports

JF - Scientific Reports

SN - 2045-2322

M1 - 1309

ER -