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  Surface Boron Modulation on Cobalt Oxide Nanocrystals for Electrochemical Oxygen Evolution Reaction

Yu, M., Weidenthaler, C., Wang, Y., Budiyanto, E., Onur Şahin, E., Chen, M., et al. (2022). Surface Boron Modulation on Cobalt Oxide Nanocrystals for Electrochemical Oxygen Evolution Reaction. Angewandte Chemie International Edition, 61(42): e202211543. doi:10.1002/anie.202211543.

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 Creators:
Yu, Mingquan1, Author           
Weidenthaler, Claudia2, Author           
Wang, Yue1, Author           
Budiyanto, Eko1, Author           
Onur Şahin, Ezgi2, Author           
Chen, Minmin3, Author
DeBeer, Serena3, Author
Rüdiger, Olaf3, Author
Tüysüz, Harun1, Author           
Affiliations:
1Research Group Tüysüz, Max-Planck-Institut für Kohlenforschung, Max Planck Society, ou_1950290              
2Research Group Weidenthaler, Max-Planck-Institut für Kohlenforschung, Max Planck Society, ou_1950291              
3Max Planck Institute for Chemical Energy Conversion, Stiftstrasse 34–36, D-45470 Mülheim an der Ruhr, Germany, ou_persistent22              

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Free keywords: Co3O4; Oxygen Evolution Reaction; Surface Boron Oxide; Water Electrolysis
 Abstract: Herein, we show that coupling boron with cobalt oxide tunes its structure and significantly boost its electrocatalytic performance for the oxygen evolution reaction (OER). Through a simple precipitation and thermal treatment process, a series of Co−B oxides with tunable morphologies and textural parameters were prepared. Detailed structural analysis supported first the formation of an disordered and partially amorphous material with nanosized Co3BO5 and/or Co2B2O6 being present on the local atomic scale. The boron modulation resulted in a superior OER reactivity by delivering a large current and an overpotential of 338 mV to reach a current density of 10 mA cm−2 in 1 M KOH electrolyte. Identical location transmission electron microscopy and in situ electrochemical Raman spectroscopy studies revealed alteration and surface re-construction of materials, and formation of CoO2 and (oxy)hydroxide intermediate, which were found to be highly dependent on crystallinity of the samples.

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Language(s): eng - English
 Dates: 2022-08-052022-09-122022-10-17
 Publication Status: Published in print
 Pages: 12
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1002/anie.202211543
 Degree: -

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Title: Angewandte Chemie International Edition
  Abbreviation : Angew. Chem., Int. Ed.
Source Genre: Journal
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Publ. Info: Weinheim : Wiley-VCH
Pages: - Volume / Issue: 61 (42) Sequence Number: e202211543 Start / End Page: - Identifier: ISSN: 1433-7851
CoNE: https://pure.mpg.de/cone/journals/resource/1433-7851