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Conducting polymer-templated and nonnoble metal doped MoSe2 hybrids as bifunctional electrocatalysts for overall water splitting

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    SYSNO ASEP0574976
    Document TypeJ - Journal Article
    R&D Document TypeJournal Article
    Subsidiary JČlánek ve WOS
    TitleConducting polymer-templated and nonnoble metal doped MoSe2 hybrids as bifunctional electrocatalysts for overall water splitting
    Author(s) Cogal, S. (SK)
    Cogal, G. C. (SK)
    Mičušík, M. (SK)
    Michalcová, A. (CZ)
    Šlouf, Miroslav (UMCH-V) RID, ORCID
    Omastová, M. (SK)
    Article number117728
    Source TitleJournal of Electroanalytical Chemistry. - : Elsevier - ISSN 1572-6657
    Roč. 946, 1 October (2023)
    Number of pages10 s.
    Languageeng - English
    CountryNL - Netherlands
    KeywordsMoSe2 ; water splitting ; electrocatalyst
    OECD categoryPolymer science
    Method of publishingLimited access
    Institutional supportUMCH-V - RVO:61389013
    UT WOS001066420800001
    EID SCOPUS85168557027
    DOI10.1016/j.jelechem.2023.117728
    AnnotationTransition metal dichalcogenides (TMDs) are potential candidates for electrocatalytic applications due to their unique structures and intrinsic properties. In this work, the systematic synthesis of conducting polymer-templated and nonnoble metal-doped MoSe2 hybrids was carried out using a facile hydrothermal method. Integrating conductive polyaniline, as a conductive polymer, with MoSe2 nanosheets (MoSe2@PANI) as well as transition metal (Co, Ni or Fe) doping provided more active sites for both H+ and OH– adsorption, resulting in enhanced hydrogen and oxygen evolution performance. The Co-doped MoSe2@PANI hybrid catalyst exhibited enhanced bifunctional electrocatalytic activity for the hydrogen evolution reaction (HER) and the oxygen evolution reaction (OER) in alkaline electrolytes, where Co-doping as well as polyaniline addition played key roles in boosting the HER/OER activity. As a result, the Co-doped MoSe2@PANI catalyst exhibited overpotentials of 196 mV and 385 mV at a current density of 10 mA cm−2 for the HER and OER, respectively. When Co-doped MoSe2@PANI was applied as a bifunctional electrocatalyst for overall water splitting, a potential of 1.82 V was needed to achieve a current density of 10 mA cm−2. Moreover, the Co-doped MoSe2@PANI catalyst displayed good stability for long-term cycling. This work provides new insight into the design of metal-doped TMD/conducting polymer-based materials for electrocatalytic applications, including water electrolysis.
    WorkplaceInstitute of Macromolecular Chemistry
    ContactEva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358
    Year of Publishing2024
    Electronic addresshttps://www.sciencedirect.com/science/article/pii/S157266572300588X?via%3Dihub
Number of the records: 1  

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