Unveiling the Mechanisms Ruling the Efficient Hydrogen Evolution Reaction with Mitrofanovite Pt3Te4 | Zendy

Danil W. Boukhvalov | Zendy; Jia Cheng | Zendy; Gianluca D’Olimpio | Zendy; François Bocquet | Zendy; Chia-Nung Kuo | Zendy; Anan Bari Sarkar | Zendy; Barun Ghosh | Zendy; I. Vobornik | Zendy; Jun Fujii | Zendy; Kuan H. Hsu | Zendy; Li-Min Wang | Zendy; Ori Azulay | Zendy; Gopi Nath Daptary | Zendy; Doron Naveh | Zendy; C. S. Lue | Zendy; Mykhailo Vorokhta | Zendy; Amit Agarwal | Zendy; Lixue Zhang | Zendy; Antonio Politano | Zendy

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Unveiling the Mechanisms Ruling the Efficient Hydrogen Evolution Reaction with Mitrofanovite Pt₃Te₄

Author(s) -

Danil W. Boukhvalov,

Jia Cheng,

Gianluca D’Olimpio,

François Bocquet,

Chia-Nung Kuo,

Anan Bari Sarkar,

Barun Ghosh,

I. Vobornik,

Jun Fujii,

Kuan H. Hsu,

Li-Min Wang,

Ori Azulay,

Gopi Nath Daptary,

Doron Naveh,

C. S. Lue,

Mykhailo Vorokhta,

Amit Agarwal,

Lixue Zhang,

Antonio Politano

Publication year - 2021

Publication title -

the journal of physical chemistry letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.563

H-Index - 203

ISSN - 1948-7185

DOI - 10.1021/acs.jpclett.1c01261

Subject(s) - overpotential , tafel equation , electrocatalyst , catalysis , hydrogen , electrode , materials science , density functional theory , conductivity , chemistry , chemical engineering , chemical physics , computational chemistry , electrochemistry , organic chemistry , engineering

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 (Pt 3 Te 4 ) 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 Pt 3 Te 4 is a weak topological metal with the Z 2 invariant, exhibiting electrical conductivity (∼4 × 10 6 S/m) comparable with pure Pt. In hydrogen evolution reaction (HER), the electrode based on bulk Pt 3 Te 4 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 Pt 3 Te 4 also provides durability of the electrode and long-term stability of its efficient catalytic performances.

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