Journal Article

FZJ-2021-03382

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Unveiling the Mechanisms Ruling the Efficient Hydrogen Evolution Reaction with Mitrofanovite Pt 3 Te 4

Boukhvalov, D. W. ; Cheng, J. ; D’Olimpio, G. ; Bocquet, F. C.FZJ* ; Kuo, C.-N. ; Sarkar, A. B. ; Ghosh, B. ; Vobornik, I. ; Fujii, J. ; Hsu, K. ; Wang, L.-M. ; Azulay, O. ; Daptary, G. N. ; Naveh, D. ; Lue, C. S. ; Vorokhta, M. ; Agarwal, A. ; Zhang, L. (Corresponding author) ; Politano, A. (Corresponding author)

2021
ACS Washington, DC

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Please use a persistent id in citations: http://hdl.handle.net/2128/28623  doi:10.1021/acs.jpclett.1c01261

Abstract: By means of electrocatalytic tests, surface-science techniques and density functional theory, we unveil the physicochemical mechanisms ruling the electrocatalytic activity of recently discovered mitrofanovite (Pt3Te4) mineral. Mitrofanovite represents a very promising electrocatalyst candidate for energy-related applications, with a reduction of costs by 47% compared to pure Pt and superior robustness to CO poisoning. We show that Pt3Te4 is a weak topological metal with the Z2 invariant, exhibiting electrical conductivity (∼4 × 106 S/m) comparable with pure Pt. In hydrogen evolution reaction (HER), the electrode based on bulk Pt3Te4 shows a very small overpotential of 46 mV at 10 mA cm–2 and a Tafel slope of 36–49 mV dec–1 associated with the Volmer–Heyrovsky mechanism. The outstanding ambient stability of Pt3Te4 also provides durability of the electrode and long-term stability of its efficient catalytic performances.

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Contributing Institute(s):

1. Quantum Nanoscience (PGI-3)

Research Program(s):

1. 5213 - Quantum Nanoscience (POF4-521) (POF4-521)
2. DFG project 396769409 - Grundlagen der Photoemissionstomographie (396769409)

Appears in the scientific report 2021

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Database coverage:
; ; ; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; Essential Science Indicators ; IF >= 5 ; JCR ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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