Controlling the Number of Branches and Surface Facets of Pd-Core Ru-Branched Nanoparticles to Make Highly Active Oxygen Evolution Reaction Electrocatalysts

Myekhlai, M. and Benedetti, T.M. and Gloag, L. and Poerwoprajitno, A.R. and Cheong, S. and Schuhmann, W. and Gooding, J.J. and Tilley, R.D.

Volume: 26 Pages: 15501-15504
DOI: 10.1002/chem.202003561
Published: 2020

Producing stable but active materials is one of the enduring challenges in electrocatalysis and other types of catalysis. Producing branched nanoparticles is one potential solution. Controlling the number of branches and branch size of faceted branched nanoparticles is one of the major synthetic challenges to achieve highly active and stable nanocatalysts. Herein, we use a cubic-core hexagonal-branch mechanism to synthesize branched Ru nanoparticles with control over the size and number of branches. This structural control is the key to achieving high exposure of active {10–11} facets and optimum number of Ru branches that enables improved catalytic activity for oxygen evolution reaction while maintaining high stability. © 2020 Wiley-VCH GmbH

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