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Ammonia borane assisted mechanochemical boost of electrochemical performance of basal planes of MoS2-type materials

Biliškov, Nikola; Milanović, Igor; Milović, Miloš; Takáts, Viktor; Erdélyi, Zoltán (2023) Ammonia borane assisted mechanochemical boost of electrochemical performance of basal planes of MoS2-type materials. Journal of Alloys and Compounds, 945 . ISSN 1873-4669

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The maximization of the number of exposed edges of layered MoS2-type transition metal dichalcogenides of general formula MX2 (M = Mo, W; X = S, Se) is difficult yet meaningful way to improve their electrochemical and electrocatalytic performance. In this work, an all-solid ball milling method for simultaneous introduction of defects and their hybridization through binding of ammonia borane (NH3BH3) to defect sites of MX2 is demonstrated. The milling conditions leads to partial separation and nanosizing of MX2 layers, simultaneously extensively introducing defects (cracks, vacancies, strains, voids etc.), while the detailed analysis revealed the functionalization of the material by binding of NH3BH3 to defect sites, which results in highly improved electrocatalytic performance of thus obtained composites with respect to MX2 for hydrogen evolution reaction. The mechanochemical approach thus enables preparation of MoS2-type materials with improved, highly tunable activity, potentially relevant for energy conversion and storage.

Item Type: Article
Uncontrolled Keywords: Ammonia borane; Electrochemistry; HER; Infrared spectroscopy; MoS2-tape transition metal dichalcogenides; PXRD
Subjects: NATURAL SCIENCES > Chemistry > Physical Chemistry
NATURAL SCIENCES > Chemistry > Inorganic Chemistry
Divisions: Division of Materials Chemistry
Project titleProject leaderProject codeProject type
Tekućinama potpomognuto mljevenje - od temelja do primjeneBiliškov, NikolaH2020-MSCA-IF-894705UNSPECIFIED
Depositing User: Nikola Biliškov
Date Deposited: 28 Jul 2023 09:32
DOI: 10.1016/j.jallcom.2023.169293

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