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, Suk Woo Nam, Tae Hoon Lim, Seung Cheol Lee, Soo Kil Kim

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65 Citations (Scopus)


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
Publication statusPublished - 2013

Bibliographical note

Funding Information:
This research was supported by the Korean Ministry of Knowledge Economy through the Korea Institute of Energy Technology Evaluation and Planning under contract number 2008-N-FC08-P-01 (S. J. H, S. J. Y, S.–K. K, S. W. N, and T.–H. L,), by the KIST Institutional Program under contract number 2E22873-12-020 (S.–K. K. and E. C.) and by the Joint Research Project funded by the Korea Research Council of Fundamental Science and Technology (KRCF), as a part of the ‘‘development and mechanism study of high performance and durable components for high-temperature PEMFCs.’’ (J. H. J). It was also partially supported by Korean Ministry of Education, Science and Technology through the National Research Foundation of Korea under contract number 2009-0082471. (J. S. and S.-C. L.).

ASJC Scopus subject areas

  • General


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