Alloy Nanocatalysts for the Electrochemical Oxygen Reduction (ORR) and the Direct Electrochemical Carbon Dioxide Reduction Reaction (CO2RR)
- 20 December 2018
- journal article
- review article
- Published by Wiley in Advanced Materials
- Vol. 31 (31), e1805617
- https://doi.org/10.1002/adma.201805617
Abstract
In the face of the global energy challenge and progressing global climate change, renewable energy systems and components, such as fuel cells and electrolyzers, which close the energetic oxygen and carbon cycles, have become a technology development priority. The electrochemical oxygen reduction reaction (ORR) and the direct electrochemical carbon dioxide reduction reaction (CO2RR) are important electrocatalytic processes that proceed at gas diffusion electrodes of hydrogen fuel cells and CO2electrolyzers, respectively. However, their low catalytic activity (voltage efficiency), limited longâterm stability, and moderate product selectivity (related to their Faradaic efficiency) have remained challenges. To address these, suitable catalysts are required. This review addresses the current state of research on Ptâbased and Cuâbased nanoalloy electrocatalysts for ORR and CO2RR, respectively, and critically compares and contrasts key performance parameters such as activity, selectivity, and durability. In particular, Pt nanoparticles alloyed with transition metals, postâtransition metals and lanthanides, are discussed, as well as the material characterization and their performance for the ORR. Then, bimetallic Cu nanoalloy catalysts are reviewed and organized according to their main reaction product generated by the second metal. This review concludes with a perspective on nanoalloy catalysts for the ORR and the CO2RR, and proposes future research directions.Keywords
Funding Information
- Bundesministerium fĂŒr Bildung und Forschung (03SF0523A, 033RC004E, 03SF0527A)
This publication has 239 references indexed in Scilit:
- Metal Nanoparticle Catalysts Beginning to Shape-upAccounts of Chemical Research, 2012
- CoreâShell Compositional Fine Structures of Dealloyed PtxNi1âx Nanoparticles and Their Impact on Oxygen Reduction CatalysisNano Letters, 2012
- Design and Synthesis of Bimetallic Electrocatalyst with Multilayered Pt-Skin SurfacesJournal of the American Chemical Society, 2011
- In Situ Observation of Bimetallic Alloy Nanoparticle Formation and Growth Using High-Temperature XRDChemistry of Materials, 2011
- Preparation of cost-effective PtâCo electrodes by pulse electrodeposition for PEMFC electrocatalystsElectrochimica Acta, 2011
- Activity of dealloyed PtCo3 and PtCu3 nanoparticle electrocatalyst for oxygen reduction reaction in polymer electrolyte membrane fuel cellJournal of Power Sources, 2010
- Durability of Pt3Co/C nanoparticles in a proton-exchange membrane fuel cell: Direct evidence of bulk Co segregation to the surfaceElectrochemistry Communications, 2010
- Monodisperse Pt3Co nanoparticles as electrocatalyst: the effects of particle size and pretreatment on electrocatalytic reduction of oxygenPhysical Chemistry Chemical Physics, 2010
- Trends in electrocatalysis on extended and nanoscale Pt-bimetallic alloy surfacesNature Materials, 2007
- Improved Oxygen Reduction Activity on Pt 3 Ni(111) via Increased Surface Site AvailabilityScience, 2007