Active and stable Ir@Pt core–shell catalysts for electrochemical oxygen reduction

Strickler, Alaina L.; Jackson, Ariel; Jaramillo, Thomas F.

doi:10.1021/acsenergylett.6b00585

Title: Active and stable Ir@Pt core–shell catalysts for electrochemical oxygen reduction

Abstract

Electrochemical oxygen reduction is an important reaction for many sustainable energy technologies, such as fuel cells and metal–air batteries. Kinetic limitations of this reaction, expensive electrocatalysts, and catalyst instability, however, limit the commercial viability of such devices. Herein, we report an active Ir@Pt core–shell catalyst that combines platinum overlayers with nanostructure effects to tune the oxygen binding to the Pt surface, thereby achieving enhanced activity and stability for the oxygen reduction reaction. Ir@Pt nanoparticles with several shell thicknesses were synthesized in a scalable, inexpensive, one-pot polyol method. Electrochemical analysis demonstrates the activity and stability of the Ir@Pt catalyst, with specific and mass activities increasing to 2.6 and 1.8 times that of commercial Pt/C (TKK), respectively, after 10 000 stability cycles. Furthermore, activity enhancement of the Ir@Pt catalyst is attributed to weakening of the oxygen binding to the Pt surface induced by the Ir core.

Authors:

Strickler, Alaina L. ^[1]; Jackson, Ariel ^[1];

^[2]

Stanford Univ., Stanford, CA (United States)
Stanford Univ., Stanford, CA (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States)

Publication Date:: 2016-12-28

Research Org.:: SLAC National Accelerator Lab., Menlo Park, CA (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

OSTI Identifier:: 1349289

Grant/Contract Number:: AC02-76SF00515

Resource Type:: Accepted Manuscript

Journal Name:: ACS Energy Letters

Additional Journal Information:: Journal Volume: 2; Journal Issue: 1; Journal ID: ISSN 2380-8195

Publisher:: American Chemical Society (ACS)

Country of Publication:: United States

Language:: English

Subject:: 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; 32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION

Citation Formats


                    Strickler, Alaina L., Jackson, Ariel, and Jaramillo, Thomas F. Active and stable Ir@Pt core–shell catalysts for electrochemical oxygen reduction.  United States: N. p., 2016. 
Web.  doi:10.1021/acsenergylett.6b00585.

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                    Strickler, Alaina L., Jackson, Ariel, & Jaramillo, Thomas F. Active and stable Ir@Pt core–shell catalysts for electrochemical oxygen reduction.  United States.  https://doi.org/10.1021/acsenergylett.6b00585

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                    Strickler, Alaina L., Jackson, Ariel, and Jaramillo, Thomas F. Wed .  
"Active and stable Ir@Pt core–shell catalysts for electrochemical oxygen reduction".  United States.  https://doi.org/10.1021/acsenergylett.6b00585.  https://www.osti.gov/servlets/purl/1349289.

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@article{osti_1349289,

  title        = {Active and stable Ir@Pt core–shell catalysts for electrochemical oxygen reduction},

  author       = {Strickler, Alaina L. and Jackson, Ariel and Jaramillo, Thomas F.},

  abstractNote = {Electrochemical oxygen reduction is an important reaction for many sustainable energy technologies, such as fuel cells and metal–air batteries. Kinetic limitations of this reaction, expensive electrocatalysts, and catalyst instability, however, limit the commercial viability of such devices. Herein, we report an active Ir@Pt core–shell catalyst that combines platinum overlayers with nanostructure effects to tune the oxygen binding to the Pt surface, thereby achieving enhanced activity and stability for the oxygen reduction reaction. Ir@Pt nanoparticles with several shell thicknesses were synthesized in a scalable, inexpensive, one-pot polyol method. Electrochemical analysis demonstrates the activity and stability of the Ir@Pt catalyst, with specific and mass activities increasing to 2.6 and 1.8 times that of commercial Pt/C (TKK), respectively, after 10 000 stability cycles. Furthermore, activity enhancement of the Ir@Pt catalyst is attributed to weakening of the oxygen binding to the Pt surface induced by the Ir core.},

  doi          = {10.1021/acsenergylett.6b00585},

  journal      = {ACS Energy Letters},

  number       = 1,

  volume       = 2,

  place        = {United States},

  year         = {2016},

  month        = {12}

}

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Title: Active and stable Ir@Pt core–shell catalysts for electrochemical oxygen reduction

Abstract

Citation Formats

Activity benchmarks and requirements for Pt, Pt-alloy, and non-Pt oxygen reduction catalysts for PEMFCs journal, March 2005

Benchmarking Pt-based electrocatalysts for low temperature fuel cell reactions with the rotating disk electrode: oxygen reduction and hydrogen oxidation in the presence of CO (review article) journal, October 2015

Tuning Nanoparticle Catalysis for the Oxygen Reduction Reaction journal, June 2013

Electrocatalyst approaches and challenges for automotive fuel cells journal, June 2012

Electrocatalysis for Polymer Electrolyte Fuel Cells: Recent Achievements and Future Challenges journal, April 2012

Pt-Based Core–Shell Catalyst Architectures for Oxygen Fuel Cell Electrodes journal, September 2013

Modification of the surface electronic and chemical properties of Pt(111) by subsurface 3d transition metals journal, June 2004

Origin of the Overpotential for Oxygen Reduction at a Fuel-Cell Cathode journal, November 2004

Role of Strain and Ligand Effects in the Modification of the Electronic and Chemical Properties of Bimetallic Surfaces journal, October 2004

Lattice-strain control of the activity in dealloyed core–shell fuel cell catalysts journal, April 2010

Tuning Nanoparticle Structure and Surface Strain for Catalysis Optimization journal, May 2014

Understanding the electrocatalysis of oxygen reduction on platinum and its alloys journal, January 2012

Theoretical surface science and catalysis—calculations and concepts book, January 2000

Tuning the activity of Pt alloy electrocatalysts by means of the lanthanide contraction journal, March 2016

Platinum monolayer electrocatalysts for oxygen reduction journal, January 2007

High-performance transition metal-doped Pt3Ni octahedra for oxygen reduction reaction journal, June 2015

Improved Oxygen Reduction Activity on Pt3Ni(111) via Increased Surface Site Availability journal, January 2007

Platinum Monolayer Fuel Cell Electrocatalysts journal, November 2007

Alloys of platinum and early transition metals as oxygen reduction electrocatalysts journal, September 2009

Climbing the Activity Volcano: Core-Shell Ru@Pt Electrocatalysts for Oxygen Reduction journal, November 2013

Universality in Oxygen Reduction Electrocatalysis on Metal Surfaces journal, July 2012

Combinatorial Density Functional Theory-Based Screening of Surface Alloys for the Oxygen Reduction Reaction journal, March 2009

Activity, Stability, and Degradation Mechanisms of Dealloyed PtCu3 and PtCo3 Nanoparticle Fuel Cell Catalysts journal, September 2011

Platinum-Alloy Cathode Catalyst Degradation in Proton Exchange Membrane Fuel Cells: Nanometer-Scale Compositional and Morphological Changes journal, January 2010

Activity, Structure and Degradation of Dealloyed PtNi 3 Nanoparticle Electrocatalyst for the Oxygen Reduction Reaction in PEMFC journal, January 2011

Density Functional Theory Study of Pt 3 M Alloy Surface Segregation with Adsorbed O/OH and Pt 3 Os as Catalysts for Oxygen Reduction Reaction journal, November 2014

Surface segregation and stability of core–shell alloy catalysts for oxygen reduction in acid medium journal, January 2010

Predicted Trends of Core−Shell Preferences for 132 Late Transition-Metal Binary-Alloy Nanoparticles journal, October 2009

Catalytic Activity of Platinum Monolayer on Iridium and Rhenium Alloy Nanoparticles for the Oxygen Reduction Reaction journal, April 2012

Bimetallic IrNi core platinum monolayer shell electrocatalysts for the oxygen reduction reaction journal, January 2012

Platinum Monolayer on IrFe Core–Shell Nanoparticle Electrocatalysts for the Oxygen Reduction Reaction journal, April 2011

High performance of core–shell structured Ir@Pt/C catalyst prepared by a facile pulse electrochemical deposition journal, September 2014

Tuning electrocatalytic activity of Pt monolayer shell by bimetallic Ir-M (M=Fe, Co, Ni or Cu) cores for the oxygen reduction reaction journal, November 2016

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Electrochemical Hydrogen Adsorption and Absorption. Part 1: Under-potential Deposition of Hydrogen journal, August 2010

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Activity benchmarks and requirements for Pt, Pt-alloy, and non-Pt oxygen reduction catalysts for PEMFCs
journal, March 2005

Benchmarking Pt-based electrocatalysts for low temperature fuel cell reactions with the rotating disk electrode: oxygen reduction and hydrogen oxidation in the presence of CO (review article)
journal, October 2015

Tuning Nanoparticle Catalysis for the Oxygen Reduction Reaction
journal, June 2013

Electrocatalyst approaches and challenges for automotive fuel cells
journal, June 2012

Electrocatalysis for Polymer Electrolyte Fuel Cells: Recent Achievements and Future Challenges
journal, April 2012

Pt-Based Core–Shell Catalyst Architectures for Oxygen Fuel Cell Electrodes
journal, September 2013

Modification of the surface electronic and chemical properties of Pt(111) by subsurface 3d transition metals
journal, June 2004

Origin of the Overpotential for Oxygen Reduction at a Fuel-Cell Cathode
journal, November 2004

Role of Strain and Ligand Effects in the Modification of the Electronic and Chemical Properties of Bimetallic Surfaces
journal, October 2004

Lattice-strain control of the activity in dealloyed core–shell fuel cell catalysts
journal, April 2010

Tuning Nanoparticle Structure and Surface Strain for Catalysis Optimization
journal, May 2014

Understanding the electrocatalysis of oxygen reduction on platinum and its alloys
journal, January 2012

Theoretical surface science and catalysis—calculations and concepts
book, January 2000

Tuning the activity of Pt alloy electrocatalysts by means of the lanthanide contraction
journal, March 2016

Platinum monolayer electrocatalysts for oxygen reduction
journal, January 2007

High-performance transition metal-doped Pt3Ni octahedra for oxygen reduction reaction
journal, June 2015

Improved Oxygen Reduction Activity on Pt₃Ni(111) via Increased Surface Site Availability
journal, January 2007

Platinum Monolayer Fuel Cell Electrocatalysts
journal, November 2007

Alloys of platinum and early transition metals as oxygen reduction electrocatalysts
journal, September 2009

Climbing the Activity Volcano: Core-Shell Ru@Pt Electrocatalysts for Oxygen Reduction
journal, November 2013

Universality in Oxygen Reduction Electrocatalysis on Metal Surfaces
journal, July 2012

Combinatorial Density Functional Theory-Based Screening of Surface Alloys for the Oxygen Reduction Reaction
journal, March 2009

Activity, Stability, and Degradation Mechanisms of Dealloyed PtCu3 and PtCo3 Nanoparticle Fuel Cell Catalysts
journal, September 2011

Platinum-Alloy Cathode Catalyst Degradation in Proton Exchange Membrane Fuel Cells: Nanometer-Scale Compositional and Morphological Changes
journal, January 2010

Activity, Structure and Degradation of Dealloyed PtNi ₃ Nanoparticle Electrocatalyst for the Oxygen Reduction Reaction in PEMFC
journal, January 2011

Density Functional Theory Study of Pt ₃ M Alloy Surface Segregation with Adsorbed O/OH and Pt ₃ Os as Catalysts for Oxygen Reduction Reaction
journal, November 2014

Surface segregation and stability of core–shell alloy catalysts for oxygen reduction in acid medium
journal, January 2010

Predicted Trends of Core−Shell Preferences for 132 Late Transition-Metal Binary-Alloy Nanoparticles
journal, October 2009

Catalytic Activity of Platinum Monolayer on Iridium and Rhenium Alloy Nanoparticles for the Oxygen Reduction Reaction
journal, April 2012

Bimetallic IrNi core platinum monolayer shell electrocatalysts for the oxygen reduction reaction
journal, January 2012

Platinum Monolayer on IrFe Core–Shell Nanoparticle Electrocatalysts for the Oxygen Reduction Reaction
journal, April 2011

High performance of core–shell structured Ir@Pt/C catalyst prepared by a facile pulse electrochemical deposition
journal, September 2014

Tuning electrocatalytic activity of Pt monolayer shell by bimetallic Ir-M (M=Fe, Co, Ni or Cu) cores for the oxygen reduction reaction
journal, November 2016

Ru–Pt core–shell nanoparticles for preferential oxidation of carbon monoxide in hydrogen
journal, March 2008

Synthesis of monodisperse Au, Pt, Pd, Ru and Ir nanoparticles in ethylene glycol
journal, November 1999

Facile Synthesis of Iridium Nanocrystals with Well-Controlled Facets Using Seed-Mediated Growth
journal, July 2014

Effects of a New Electrochemical Cleaning Protocol on Ru@Pt Core-Shell ORR Catalysts
journal, August 2013

Electrochemical Hydrogen Adsorption and Absorption. Part 1: Under-potential Deposition of Hydrogen
journal, August 2010

Tuning the Activity of Pt(111) for Oxygen Electroreduction by Subsurface Alloying
journal, April 2011

Electrochemical Stability of Elemental Metal Nanoparticles
journal, August 2010

Electrocatalysis on Platinum Nanoparticles: Particle Size Effect on Oxygen Reduction Reaction Activity
journal, September 2011

Controlling the Catalytic Activity of Platinum-Monolayer Electrocatalysts for Oxygen Reduction with Different Substrates
journal, March 2005

Highly Enhanced Oxygen Reduction Reaction Activity and Electrochemical Stability of Pt/Ir(111) Bimetallic Surfaces
journal, December 2016

Noble metal supported hexagonal boron nitride for the oxygen reduction reaction: a DFT study
journal, January 2019

Fabrication of Superior Single‐Atom Catalysts toward Diverse Electrochemical Reactions
journal, February 2019

A review of Pt-based electrocatalysts for oxygen reduction reaction
journal, May 2017

Single Metal Atoms Anchored in Two-Dimensional Materials: Bifunctional Catalysts for Fuel Cell Applications
journal, May 2018

A Comprehensive Review on Controlling Surface Composition of Pt-Based Bimetallic Electrocatalysts
journal, April 2018

Pt-loaded Au@CeO ₂ core–shell nanocatalysts for improving methanol oxidation reaction activity
journal, January 2019

Engineering Ru@Pt Core-Shell Catalysts for Enhanced Electrochemical Oxygen Reduction Mass Activity and Stability
journal, January 2018

Ordered platinum–bismuth intermetallic clusters with Pt-skin for a highly efficient electrochemical ethanol oxidation reaction
journal, January 2019

Facile synthesis of Pt-decorated Ir black as a bifunctional oxygen catalyst for oxygen reduction and evolution reactions
journal, January 2019

Engineering stable electrocatalysts by synergistic stabilization between carbide cores and Pt shells
journal, December 2019