Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

Palladium-platinum core-shell electrocatalysts for oxygen reduction reaction prepared with the assistance of citric acid

Journal Article · · ACS Catalysis
 [1];  [2];  [1];  [1];  [1];  [3];  [1]
  1. The Hong Kong Univ. of Science and Technology, Kowloon (Hong Kong)
  2. Brookhaven National Lab. (BNL), Upton, NY (United States)
  3. National Supercomputing Center in Shenzhen, Guangdong (People's Republic of China)
Core–shell structure is a promising alternative to solid platinum (Pt) nanoparticles as electrocatalyst for oxygen reduction reaction (ORR) in proton exchange membrane fuel cells (PEMFCs). A simple method of preparing palladium (Pd)–platinum (Pt) core–shell catalysts (Pd@Pt/C) in a gram-batch was developed with the assistance of citric acid. The Pt shell deposition involves three different pathways: galvanic displacement reaction between Pd atoms and Pt cations, chemical reduction by citric acid, and reduction by negative charges on Pd surfaces. The uniform ultrathin (~0.4 nm) Pt shell was characterized by in situ X-ray diffraction (XRD) and high-angle annular dark-field scanning transmission electron microscopy (HAADF-STEM) images combined with electron energy loss spectroscopy (EELS). Compared with state-of-the-art Pt/C, the Pd@Pt/C core–shell catalyst showed 4 times higher Pt mass activity and much better durability upon potential cycling. As a result, both the mass activity and durability were comparable to that of Pd@Pt/C synthesized by a Cu-mediated-Pt-displacement method, which is more complicated and difficult for mass production.
Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States). Center for Functional Nanomaterials
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI ID:
1257947
Alternate ID(s):
OSTI ID: 1354475
Report Number(s):
BNL--112220-2016-JA; KC0403020
Journal Information:
ACS Catalysis, Journal Name: ACS Catalysis Journal Issue: 6 Vol. 6; ISSN 2155-5435
Country of Publication:
United States
Language:
English

References (50)

Synthesis of Palladium Icosahedra with Twinned Structure by Blocking Oxidative Etching with Citric Acid or Citrate Ions journal January 2007
Controlling the Catalytic Activity of Platinum-Monolayer Electrocatalysts for Oxygen Reduction with Different Substrates journal March 2005
Core-Protected Platinum Monolayer Shell High-Stability Electrocatalysts for Fuel-Cell Cathodes journal October 2010
Activity, Stability, and Degradation Mechanisms of Dealloyed PtCu3 and PtCo3 Nanoparticle Fuel Cell Catalysts journal September 2011
Designed Synthesis of Well-Defined Pd@Pt Core-Shell Nanoparticles with Controlled Shell Thickness as Efficient Oxygen Reduction Electrocatalysts journal April 2013
Platinum Monolayer Fuel Cell Electrocatalysts journal November 2007
Size Effects in Monolayer Catalysis—Model Study: Pt Submonolayers on Au(111) journal February 2012
Synthesis and Characterization of Palladium–Platinum Core–Shell Electrocatalysts for Oxygen Reduction journal July 2012
Platinum Monolayer Electrocatalysts: Tunable Activity, Stability, and Self-Healing Properties journal September 2012
Spontaneous deposition of Pt on the Ru(0001) surface journal April 2001
Activity benchmarks and requirements for Pt, Pt-alloy, and non-Pt oxygen reduction catalysts for PEMFCs journal March 2005
Core–shell Pt modified Pd/C as an active and durable electrocatalyst for the oxygen reduction reaction in PEMFCs journal March 2013
Reaction kinetics of metal deposition via surface limited red-ox replacement of underpotentially deposited metal monolayers journal June 2011
Electrocatalytic Activity for Oxygen Reduction Reaction of Au Core/Pt Shell Nanoparticle-Loaded Carbon Black Catalyst with Different Core Sizes journal October 2015
Dealloyed binary PtM3 (M=Cu, Co, Ni) and ternary PtNi3M (M=Cu, Co, Fe, Cr) electrocatalysts for the oxygen reduction reaction: Performance in polymer electrolyte membrane fuel cells journal January 2011
Activity of dealloyed PtCo3 and PtCu3 nanoparticle electrocatalyst for oxygen reduction reaction in polymer electrolyte membrane fuel cell journal June 2011
Recent Advances in Electrocatalysts for Oxygen Reduction Reaction journal February 2016
Oxygen Reduction Electrocatalyst of Pt on Au Nanoparticles through Spontaneous Deposition journal December 2014
Carbon-Supported Pt-Based Alloy Electrocatalysts for the Oxygen Reduction Reaction in Polymer Electrolyte Membrane Fuel Cells: Particle Size, Shape, and Composition Manipulation and Their Impact to Activity journal April 2015
High Performance Pt Monolayer Catalysts Produced via Core-Catalyzed Coating in Ethanol journal January 2014
Pt Monolayer on Porous Pd−Cu Alloys as Oxygen Reduction Electrocatalysts journal July 2010
Pt-Decorated PdCo@Pd/C Core−Shell Nanoparticles with Enhanced Stability and Electrocatalytic Activity for the Oxygen Reduction Reaction journal December 2010
Enhanced Oxygen Reduction Reaction Activity and Characterization of Pt–Pd/C Bimetallic Fuel Cell Catalysts with Pt-Enriched Surfaces in Acid Media journal October 2012
Enhanced Oxygen Reduction Activity of Platinum Monolayer on Gold Nanoparticles journal December 2010
Atomic-Layer Electroless Deposition: A Scalable Approach to Surface-Modified Metal Powders journal April 2014
Silver Nanodisk Growth by Surface Plasmon Enhanced Photoreduction of Adsorbed [Ag + ] journal November 2003
Electrocatalysis on Platinum Nanoparticles: Particle Size Effect on Oxygen Reduction Reaction Activity journal September 2011
Octahedral PtNi Nanoparticle Catalysts Exceptional Oxygen Reduction Activity by Tuning the Alloy Particle Surface Composition journal October 2012
Synthesis and Characterization of 9 nm Pt–Ni Octahedra with a Record High Activity of 3.3 A/mg Pt for the Oxygen Reduction Reaction journal June 2013
Atomic Layer-by-Layer Deposition of Pt on Pd Nanocubes for Catalysts with Enhanced Activity and Durability toward Oxygen Reduction journal May 2014
Synthesis and Characterization of Pd@Pt–Ni Core–Shell Octahedra with High Activity toward Oxygen Reduction journal September 2014
Electrocatalyst approaches and challenges for automotive fuel cells journal June 2012
Lattice-strain control of the activity in dealloyed core–shell fuel cell catalysts journal April 2010
Iron-based cathode catalyst with enhanced power density in polymer electrolyte membrane fuel cells journal August 2011
Highly stable Pt monolayer on PdAu nanoparticle electrocatalysts for the oxygen reduction reaction journal January 2012
Gold-promoted structurally ordered intermetallic palladium cobalt nanoparticles for the oxygen reduction reaction journal November 2014
Mesostructured thin films as electrocatalysts with tunable composition and surface morphology journal November 2012
Structurally ordered intermetallic platinum–cobalt core–shell nanoparticles with enhanced activity and stability as oxygen reduction electrocatalysts journal October 2012
Recent advances in non-precious metal catalysis for oxygen-reduction reaction in polymer electrolyte fuelcells journal January 2011
Record activity and stability of dealloyed bimetallic catalysts for proton exchange membrane fuel cells journal January 2015
Carbon monoxide mediated chemical deposition of Pt or Pd quasi-monolayer on Au surfaces with superior electrocatalysis for ethanol oxidation in alkaline media journal January 2016
Voltammetric surface dealloying of Pt bimetallic nanoparticles: an experimental and DFT computational analysis journal January 2008
Core–shell catalysts consisting of nanoporous cores for oxygen reduction reaction journal January 2013
Improved Oxygen Reduction Activity on Pt3Ni(111) via Increased Surface Site Availability journal January 2007
Just a Dream—or Future Reality? journal April 2009
High-Performance Electrocatalysts for Oxygen Reduction Derived from Polyaniline, Iron, and Cobalt journal April 2011
Highly Crystalline Multimetallic Nanoframes with Three-Dimensional Electrocatalytic Surfaces journal February 2014
High-performance transition metal-doped Pt3Ni octahedra for oxygen reduction reaction journal June 2015
Nucleation of Pt Monolayers Deposited via Surface Limited Redox Replacement Reaction journal January 2014
Electrochemical Atomic Layer Deposition (E-ALD) of Pt Nanofilms Using SLRR Cycles journal January 2012

Cited By (10)

Platinum-Palladium Core-Shell Nanoflower Catalyst with Improved Activity and Excellent Durability for the Oxygen Reduction Reaction journal January 2018
Room‐Temperature Sustainable Synthesis of Selected Platinum Group Metal (PGM = Ir, Rh, and Ru) Nanocatalysts Well‐Dispersed on Porous Carbon for Efficient Hydrogen Evolution and Oxidation journal October 2019
Core–Shell-Structured Low-Platinum Electrocatalysts for Fuel Cell Applications journal July 2018
Reactive template-induced core–shell FeCo@C microspheres as multifunctional electrocatalysts for rechargeable zinc–air batteries journal January 2018
Hollow copper–ceria microspheres with single and multiple shells for preferential CO oxidation journal January 2019
Rapid synthesis of hollow PtPdCu trimetallic octahedrons at room temperature for oxygen reduction reactions in acid media journal January 2020
Electrochemical Properties and Single Cell Performance of Pd Core-Pt Shell Structured Catalyst Synthesized by a Simple Direct Displacement Reaction journal January 2020
Tailoring Carbon Materials Substrate to Modify the Electronic Structure of Platinum for Boosting Its Electrocatalytic Activity journal January 2018
Fabrication of Electro-Active Pt/IMo 6 O 24 /Graphene Oxide Nanohybrid Modified Electrode for the Simultaneous Determination of Ascorbic Acid, Dopamine and Uric Acid journal January 2019
Improvement of Catalytic Activity of Platinum Nanoparticles Decorated Carbon Graphene Composite on Oxygen Electroreduction for Fuel Cells journal September 2019

Similar Records

Platinum Monolayer on IrFe Core-Shell Nanoparticle Electrocatalysts for the Oxygen Reduction Reaction
Journal Article · Fri Dec 30 23:00:00 EST 2011 · Electrocatalysis · OSTI ID:1042335

Platinum Monolayer on IrFe Core–Shell Nanoparticle Electrocatalysts for the Oxygen Reduction Reaction
Journal Article · Thu Apr 19 00:00:00 EDT 2012 · Electrocatalysis · OSTI ID:1044764

The Role of Citric Acid in Perfecting Platinum Monolayer on Palladium Nanoparticles during the Surface Limited Redox Replacement Reaction
Journal Article · Wed Jul 27 20:00:00 EDT 2016 · Journal of the Electrochemical Society · OSTI ID:1348291