Enabling direct H2O2 production through rational electrocatalyst design

Enabling direct H2O2 production through rational electrocatalyst design

Future generations require more efficient and localized processes for energy conversion and chemical synthesis. The continuous on-site production of hydrogen peroxide would provide an attractive alternative to the present state-of-the-art, which is based on the complex anthraquinone process. The ele...

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Bibliographic Details
Published in:Nature materials 2013-12, Vol.12 (12), p.1137-1143
Main Authors: Siahrostami, Samira, Verdaguer-Casadevall, Arnau, Karamad, Mohammadreza, Deiana, Davide, Malacrida, Paolo, Wickman, Björn, Escudero-Escribano, María, Paoli, Elisa A, Frydendal, Rasmus, Hansen, Thomas W, Chorkendorff, Ib, Stephens, Ifan E L S, Stephens, Ifan E, Rossmeisl, Jan
Format: Article
Language:eng
Subjects:
Alloys
carbon
Catalysts
Chemical engineering
Chemical synthesis
disk
electrode
electroreduction
fuel-cell
Hydrogen peroxide
Materials science
metal-surfaces
oxidation
oxygen reduction reaction
platinum
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Summary:Future generations require more efficient and localized processes for energy conversion and chemical synthesis. The continuous on-site production of hydrogen peroxide would provide an attractive alternative to the present state-of-the-art, which is based on the complex anthraquinone process. The electrochemical reduction of oxygen to hydrogen peroxide is a particularly promising means of achieving this aim. However, it would require active, selective and stable materials to catalyse the reaction. Although progress has been made in this respect, further improvements through the development of new electrocatalysts are needed. Using density functional theory calculations, we identify Pt-Hg as a promising candidate. Electrochemical measurements on Pt-Hg nanoparticles show more than an order of magnitude improvement in mass activity, that is, A g(-1) precious metal, for H2O2 production, over the best performing catalysts in the literature.
ISSN:1476-1122
1476-4660
1476-4660