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Microwave‐Induced Structural Engineering and Pt Trapping in 6R‐TaS2 for the Hydrogen Evolution Reaction

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F20%3A43920447" target="_blank" >RIV/60461373:22310/20:43920447 - isvavai.cz</a>

  • Result on the web

    <a href="https://onlinelibrary.wiley.com/doi/full/10.1002/smll.202003372" target="_blank" >https://onlinelibrary.wiley.com/doi/full/10.1002/smll.202003372</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.1002/smll.202003372" target="_blank" >10.1002/smll.202003372</a>

Alternative languages

  • Result language

    angličtina

  • Original language name

    Microwave‐Induced Structural Engineering and Pt Trapping in 6R‐TaS2 for the Hydrogen Evolution Reaction

  • Original language description

    The nanoengineering of the structure of transition metal dichalcogenides (TMDs) is widely pursued to develop viable catalysts for the hydrogen evolution reaction (HER) alternative to the precious metallic ones. Metallic group-5 TMDs have been demonstrated to be effective catalysts for the HER in acidic media, making affordable real proton exchange membrane water electrolysers. Their key-plus relies on the fact that both their basal planes and edges are catalytically active for the HER. In this work, the 6R phase of TaS2 is &quot;rediscovered&quot; and engineered. A liquid-phase microwave treatment is used to modify the structural properties of the 6R-TaS2 nanoflakes produced by liquid-phase exfoliation. The fragmentation of the nanoflakes and their evolution from monocrystalline to partly polycrystalline structures improve the HER-activity, lowering the overpotential at cathodic current of 10 mA cm(-2) from 0.377 to 0.119 V. Furthermore, 6R-TaS2 nanoflakes act as ideal support to firmly trap Pt species, which achieve a mass activity (MA) up 10 000 A g(Pt)(-1) at overpotential of 50 mV (20 000 A g(Pt)(-1) at overpotentials of 72 mV), representing a 20-fold increase of the MA of Pt measured for the Pt/C reference, and approaching the state-of-the-art of the Pt mass activity.

  • Czech name

  • Czech description

Classification

  • Type

    J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database

  • CEP classification

  • OECD FORD branch

    10402 - Inorganic and nuclear chemistry

Result continuities

  • Project

    <a href="/en/project/GC20-16124J" target="_blank" >GC20-16124J: Two-dimensional layered transition metal dichalcogenides/ nanostructured carbons composites for electrochemical energy storage and conversion</a><br>

  • Continuities

    P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Others

  • Publication year

    2020

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Name of the periodical

    Small

  • ISSN

    1613-6810

  • e-ISSN

  • Volume of the periodical

    16

  • Issue of the periodical within the volume

    50

  • Country of publishing house

    DE - GERMANY

  • Number of pages

    13

  • Pages from-to

  • UT code for WoS article

    000591337200001

  • EID of the result in the Scopus database

    2-s2.0-85097189583