New Class of Electrocatalysts Based on 2D Transition Metal Dichalcogenides in Ionic Liquid

New Class of Electrocatalysts Based on 2D Transition Metal Dichalcogenides in Ionic Liquid

© 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Détails bibliographiques
Publié dans:Advanced materials (Deerfield Beach, Fla.). - 1998. - 31(2019), 4 vom: 15. Jan., Seite e1804453
Auteur principal: Majidi, Leily (Auteur)
Autres auteurs: Yasaei, Poya, Warburton, Robert E, Fuladi, Shadi, Cavin, John, Hu, Xuan, Hemmat, Zahra, Cho, Sung Beom, Abbasi, Pedram, Vörös, Márton, Cheng, Lei, Sayahpour, Baharak, Bolotin, Igor L, Zapol, Peter, Greeley, Jeffrey, Klie, Robert F, Mishra, Rohan, Khalili-Araghi, Fatemeh, Curtiss, Larry A, Salehi-Khojin, Amin
Format: Article en ligne
Langue:English
Publié: 2019
Accès à la collection:Advanced materials (Deerfield Beach, Fla.)
Sujets:Journal Article electrocatalysis ionic liquids oxygen evolution reaction oxygen reduction reaction transition metal dichalcogenides
Description
Résumé:© 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
The optimization of traditional electrocatalysts has reached a point where progress is impeded by fundamental physical factors including inherent scaling relations among thermokinetic characteristics of different elementary reaction steps, non-Nernstian behavior, and electronic structure of the catalyst. This indicates that the currently utilized classes of electrocatalysts may not be adequate for future needs. This study reports on synthesis and characterization of a new class of materials based on 2D transition metal dichalcogenides including sulfides, selenides, and tellurides of group V and VI transition metals that exhibit excellent catalytic performance for both oxygen reduction and evolution reactions in an aprotic medium with Li salts. The reaction rates are much higher for these materials than previously reported catalysts for these reactions. The reasons for the high activity are found to be the metal edges with adiabatic electron transfer capability and a cocatalyst effect involving an ionic-liquid electrolyte. These new materials are expected to have high activity for other core electrocatalytic reactions and open the way for advances in energy storage and catalysis
Description:Date Completed 30.01.2019
Date Revised 01.10.2020
published: Print-Electronic
Citation Status PubMed-not-MEDLINE
ISSN:1521-4095
DOI:10.1002/adma.201804453