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Core–Shell and Nanoporous Particle Architectures and Their Effect on the Activity and Stability of Pt ORR Electrocatalysts

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Abstract

We review our recent progress in the development of Pt–Ni bimetallic electrocatalysts with both high sustained activity and sustained stability for oxygen reduction reaction (ORR). This was achieved by an atomic understanding and rational control of the core–shell compositional patterns and size-related nanoporosity within the bimetallic nanoparticles formed during chemical and electrochemical pretreatment and electrocatalysis. In particular, we reveal how the size of the nanoparticle directly influences the nanoporosity formation and thereby the near surface composition, catalytic activity and stability. Our atomic insights provide a clearer picture on how bimetallic nanoparticles should be tailored for optimal ORR performance.

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Authors and Affiliations

  1. The Electrochemical Catalysis, Energy and Materials Science Laboratory, Chemical Engineering Division, Department of Chemistry, Technical University Berlin, 10623, Berlin, Germany

    Lin Gan, Chunhua Cui, Stefan Rudi & Peter Strasser

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  1. Lin Gan
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  2. Chunhua Cui
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  3. Stefan Rudi
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  4. Peter Strasser
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Correspondence to Peter Strasser.

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Dedicated to the 60th birthday of Prof. Jens Nørskov.

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Gan, L., Cui, C., Rudi, S. et al. Core–Shell and Nanoporous Particle Architectures and Their Effect on the Activity and Stability of Pt ORR Electrocatalysts. Top Catal 57, 236–244 (2014). https://doi.org/10.1007/s11244-013-0178-z

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