Journal Article

PUBDB-2019-04017

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png General π-Electron-Assisted Strategy for Ir, Pt, Ru, Pd, Fe, Ni Single-Atom Electrocatalysts with Bifunctional Active Sites for Highly Efficient Water Splitting

Lai, W.-H. ; Zhang, L.-F. ; Hua, W.-B.Extern* ; Indris, S.Extern* ; Yan, Z.-C. ; Hu, Z. ; Zhang, B. ; Liu, Y. ; Wang, L. ; Liu, M. ; Liu, R. ; Wang, Y.-X. ; Wang, J.-Z. (Corresponding author) ; Hu, Z. ; Liu, H.-K. ; Chou, S.-L. (Corresponding author) ; Dou, S.-X.

2019
Wiley-VCH Weinheim

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Please use a persistent id in citations: doi:10.1002/anie.201904614

Abstract: Both the hydrogen evolution reaction (HER) and the oxygen evolution reaction (OER) are crucial to water splitting, but require alternative active sites. Now, a general π‐electron‐assisted strategy to anchor single‐atom sites (M=Ir, Pt, Ru, Pd, Fe, Ni) on a heterogeneous support is reported. The M atoms can simultaneously anchor on two distinct domains of the hybrid support, four‐fold N/C atoms (M@NC), and centers of Co octahedra (M@Co), which are expected to serve as bifunctional electrocatalysts towards the HER and the OER. The Ir catalyst exhibits the best water‐splitting performance, showing a low applied potential of 1.603 V to achieve 10 mA cm−2 in 1.0 m KOH solution with cycling over 5 h. DFT calculations indicate that the Ir@Co (Ir) sites can accelerate the OER, while the Ir@NC3 sites are responsible for the enhanced HER, clarifying the unprecedented performance of this bifunctional catalyst towards full water splitting.

Note: (c) Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim ;Post referee fulltext in progress; Embargo 12 months from publication

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Contributing Institute(s):

1. DOOR-User (DOOR ; HAS-User)

Research Program(s):

1. 6G3 - PETRA III (POF3-622) (POF3-622)

Experiment(s):

1. PETRA Beamline P65 (PETRA III)

Appears in the scientific report 2019

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Database coverage:
; Clarivate Analytics Master Journal List ; Current Contents - Life Sciences ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; IF >= 10 ; JCR ; NCBI Molecular Biology Database ; Nationallizenz ; No Authors Fulltext ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Web of Science Core Collection

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