Review
Tuning Nanoparticle Catalysis for the Oxygen Reduction Reaction
Dr. Shaojun Guo,
Sen Zhang,
Prof. Shouheng Sun,
Dr. Shaojun Guo
Department of Chemistry, Brown University, Providence, RI 02912 (USA)
These authors contributed equally to this work.
Search for more papers by this authorSen Zhang
Department of Chemistry, Brown University, Providence, RI 02912 (USA)
These authors contributed equally to this work.
Search for more papers by this authorCorresponding Author
Prof. Shouheng Sun
Department of Chemistry, Brown University, Providence, RI 02912 (USA)
Department of Chemistry, Brown University, Providence, RI 02912 (USA)Search for more papers by this authorDr. Shaojun Guo,
Sen Zhang,
Prof. Shouheng Sun,
Dr. Shaojun Guo
Department of Chemistry, Brown University, Providence, RI 02912 (USA)
These authors contributed equally to this work.
Search for more papers by this authorSen Zhang
Department of Chemistry, Brown University, Providence, RI 02912 (USA)
These authors contributed equally to this work.
Search for more papers by this authorCorresponding Author
Prof. Shouheng Sun
Department of Chemistry, Brown University, Providence, RI 02912 (USA)
Department of Chemistry, Brown University, Providence, RI 02912 (USA)Search for more papers by this authorGraphical Abstract
Efforts in searching for efficient nanoparticle catalysts for the oxygen reduction reaction (ORR) in fuel cells have led to various nanoparticle (NP) systems with precise control of size, shape, composition, and structure. Whereas the traditional Pt-based catalysts are still under heavy investigation, recent studies have led to the emergence of non-Pt systems. This Review highlights the recent efforts in developing Pt- and non-Pt-based NPs into advanced nanocatalysts for the ORR.
Abstract
Advances in chemical syntheses have led to the formation of various kinds of nanoparticles (NPs) with more rational control of size, shape, composition, structure and catalysis. This review highlights recent efforts in the development of Pt and non-Pt based NPs into advanced nanocatalysts for efficient oxygen reduction reaction (ORR) under fuel-cell reaction conditions. It first outlines the shape controlled synthesis of Pt NPs and their shape-dependent ORR. Then it summarizes the studies of alloy and core–shell NPs with controlled electronic (alloying) and strain (geometric) effects for tuning ORR catalysis. It further provides a brief overview of ORR catalytic enhancement with Pt-based NPs supported on graphene and coated with an ionic liquid. The review finally introduces some non-Pt NPs as a new generation of catalysts for ORR. The reported new syntheses with NP parameter-tuning capability should pave the way for future development of highly efficient catalysts for applications in fuel cells, metal-air batteries, and even in other important chemical reactions.
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