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Interface Engineering of MoS2/Ni3S2 Heterostructures for Highly Enhanced Electrochemical Overall Water Splitting Activity: Interface Engineering of MoS2/Ni3S2 Heterostructures for...

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Personen und Körperschaften: Zhang, Jian, Wang, Tao, Pohl, Darius, Rellinghaus, Bernd, Dong, Renhao, Liu, Shaohua, Zhuang, Xiaodong, Feng, Xinliang
Titel: Interface Engineering of MoS2/Ni3S2 Heterostructures for Highly Enhanced Electrochemical Overall Water Splitting Activity: Interface Engineering of MoS2/Ni3S2 Heterostructures for Highly Enhanced Electrochemical Overall Water Splitting Activity
Format: E-Artikel
Sprache: Englisch
veröffentlicht:
Weinheim Wiley-VCH Verlag
Online-Ausg.. 2018
Gesamtaufnahme: , Angewandte Chemie: a journal of the Gesellschaft Deutscher Chemiker International Edition (2016), 55(23). S. 6702-6707. ISSN: 1521-3773. DOI: 10.1002/anie.201602237
Schlagwörter:
Grenzflächentechnik
Wasserspaltung
Elektrokatalysatoren
Nickelsulfid
Molybdändisulfid
Interface Engineering
Water Splitting
Electrocatalysts
Nickel Sulfide
Molybdenum Disulfide
Quelle: Qucosa
Details
Zusammenfassung: To achieve sustainable production of H2 fuel through water splitting, low-cost electrocatalysts for hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) are required to replace Pt and IrO2 catalysts. Here, for the first time, we present the interface engineering of novel MoS2/Ni3S2 heterostructures, in which abundant interfaces are formed. For OER, such MoS2/Ni3S2 heterostructures show an extremely low overpotential of ~218 mV at 10 mA cm-2, which is superior to that of the state-of-the-art OER electrocatalysts. Using MoS2/Ni3S2 heterostructures as bifunctional electrocatalysts, an alkali electrolyser delivers a current density of 10 mA cm-2 at a very low cell voltage of ~1.56 V. In combination with density function theory (DFT) calculations, this study demonstrates that the constructed interfaces synergistically favor the chemisorption of hydrogen and oxygencontaining intermediates, thus accelerating the overall electrochemical water splitting.