Tuning selectivity of electrochemical reactions by atomically dispersed platinum catalyst

Choi CH, Kim M, Kwon HC, Cho SJ, Yun S, Kim HT, Mayrhofer K, Kim H, Choi M (2016)

Publication Status: Published

Publication Type: Journal article

Publication year: 2016

Journal

Nature Communications Nature Publishing Group: Nature Communications

Publisher: NATURE PUBLISHING GROUP

Book Volume: 7

Article Number: ARTN 10922

DOI: 10.1038/ncomms10922

Abstract

Maximum atom efficiency as well as distinct chemoselectivity is expected for electrocatalysis on atomically dispersed (or single site) metal centres, but its realization remains challenging so far, because carbon, as the most widely used electrocatalyst support, cannot effectively stabilize them. Here we report that a sulfur-doped zeolite-templated carbon, simultaneously exhibiting large sulfur content (17 wt% S), as well as a unique carbon structure (that is, highly curved three-dimensional networks of graphene nanoribbons), can stabilize a relatively high loading of platinum (5 wt%) in the form of highly dispersed species including site isolated atoms. In the oxygen reduction reaction, this catalyst does not follow a conventional four-electron pathway producing H2O, but selectively produces H2O2 even over extended times without significant degradation of the activity. Thus, this approach constitutes a potentially promising route for producing important fine chemical H2O2, and also offers opportunities for tuning the selectivity of other electrochemical reactions on various metal catalysts.

Authors with CRIS profile

Karl Mayrhofer Lehrstuhl für Elektrokatalyse (HIERN)

Involved external institutions

Korea Advanced Institute of Science and Technology (KAIST) KR Korea, Republic of (KR) Chonnam National University Hwasun Hospital KR Korea, Republic of (KR)

How to cite

APA:

Choi, C.H., Kim, M., Kwon, H.C., Cho, S.J., Yun, S., Kim, H.-T.,... Choi, M. (2016). Tuning selectivity of electrochemical reactions by atomically dispersed platinum catalyst. Nature Communications, 7. https://doi.org/10.1038/ncomms10922

MLA:

Choi, Chang Hyuck, et al. "Tuning selectivity of electrochemical reactions by atomically dispersed platinum catalyst." Nature Communications 7 (2016).

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