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Electrocatalytic Water Oxidation Promoted by 3 D Nanoarchitectured Turbostratic Δ-MnOx on Carbon Nanotubes
KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Chemistry.ORCID iD: 0000-0002-4093-1251
KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Fibre- and Polymer Technology.ORCID iD: 0000-0002-1591-5815
KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Chemistry.
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2017 (English)In: ChemSusChem, ISSN 1864-5631, E-ISSN 1864-564X, Vol. 10, no 22, p. 4472-4478Article in journal (Refereed) Published
Abstract [en]

The development of manganese-based water oxidation electrocatalysts is desirable for the production of solar fuels, as manganese is earth-abundant, inexpensive, non-toxic, and has been employed by the Photosystem II in nature for a billion years. Herein, we directly constructed a 3 D nanoarchitectured turbostratic δ-MnOx on carbon nanotube-modified nickel foam (MnOx/CNT/NF) by electrodeposition and a subsequent annealing process. The MnOx/CNT/NF electrode gives a benchmark catalytic current density (10 mA cm−2) at an overpotential (η) of 270 mV under alkaline conditions. A steady current density of 19 mA cm−2 is obtained during electrolysis at 1.53 V for 1.0 h. To the best of our knowledge, this work represents the most efficient manganese-oxide-based water oxidation electrode and demonstrates that manganese oxides, as a structural and functional model of oxygen-evolving complex (OEC) in Photosystem II, can also become comparable to those of most Ni- and Co-based catalysts.

Place, publisher, year, edition, pages
Wiley-VCH Verlag , 2017. Vol. 10, no 22, p. 4472-4478
Keyword [en]
artificial photosynthesis, electrochemistry, manganese, turbostratic manganese oxide, water oxidation, Carbon, Carbon nanotubes, Electrocatalysts, Electrodes, Foams, Nanotubes, Nickel, Oxidation, Oxides, Yarn, Alkaline conditions, Annealing process, Catalytic current, Co-based catalysts, Oxygen-evolving complexes, Turbostratic, Manganese oxide, carbon nanotube, manganese derivative, oxide, water, catalysis, chemistry, electrochemical analysis, electrode, molecular mimicry, oxidation reduction reaction, photosystem II, procedures, solar energy, Electrochemical Techniques, Manganese Compounds, Nanotubes, Carbon, Oxidation-Reduction, Photosystem II Protein Complex
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URN: urn:nbn:se:kth:diva-227139DOI: 10.1002/cssc.201700824Scopus ID: 2-s2.0-85035013364OAI: oai:DiVA.org:kth-227139DiVA, id: diva2:1203483
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QC 20180503

Available from: 2018-05-03 Created: 2018-05-03 Last updated: 2018-05-03Bibliographically approved

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Zhang, BiaobiaoLi, YuanyuanFan, LizhouZhang, PeiliSun, Licheng

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Zhang, BiaobiaoLi, YuanyuanFan, LizhouDaniel, QuentinZhang, PeiliWang, LinqinSun, Licheng
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