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Title: Microstructural Evolution and ORR Activity of Nanocolumnar Platinum Thin Films with Different Mass Loadings Grown by High Pressure Sputtering

Journal Article · · Journal of the Electrochemical Society (Online)
ORCiD logo [1];  [2];  [2];  [3];  [4];  [4];  [1]
  1. Univ. of Arkansas, Little Rock, AR (United States)
  2. Raytheon Technologies Research Center, East Hartford, CT (United States)
  3. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  4. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

Nanocolumnar platinum thin films (Pt-TFs) with different Pt mass loadings were grown by high pressure sputtering (HIPS) and investigated as oxygen reduction reaction (ORR) electrocatalysts for polymer electrolyte membrane fuel cell applications. Mass loading was controlled by changing the sputter deposition time. A cauliflower-like columnar microstructure was achieved by depositing the Pt-TFs onto a microporous layer (MPL)-like surface composed of carbon particles in order to mimic catalyst-coated gas diffusion electrodes. Microstructural evolution of HIPS Pt-TFs and their ORR activity were investigated. Electrochemical characterization of the nanocolumnar Pt-TFs was performed by cyclic voltammetry and rotating disk electrode measurements on Pt-TF/MPL-like-layer/glassy-carbon samples in an aqueous perchloric acid electrolyte. The electrochemically active surface area increased from 18 to 39 m2 g–1 as the Pt mass loading was decreased. Specific activity of the films was similar (~600 μA cm–2) for all Pt mass loadings, due to the similar nanoparticle sizes of ~5 nm as observed by transmission electron microscopy and X-ray diffraction. Furthermore, mass activity of the films increased from 0.11 to 0.26 A mg–1 as the Pt mass loading was decreased, which is an indication of the effective Pt utilization and better access through the catalyst layer at lower Pt mass loadings.

Research Organization:
Raytheon Technologies Research Center, East Hartford, CT (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Transportation Office. Fuel Cell Technologies Office
Grant/Contract Number:
EE0007652
OSTI ID:
1883618
Journal Information:
Journal of the Electrochemical Society (Online), Vol. 167, Issue 13; ISSN 1945-7111
Publisher:
IOP PublishingCopyright Statement
Country of Publication:
United States
Language:
English

References (46)

Electrochemistry and the Future of the Automobile journal June 2010
Recent advances in the design of tailored nanomaterials for efficient oxygen reduction reaction journal November 2016
Electrocatalyst approaches and challenges for automotive fuel cells journal June 2012
Improved carbon nanostructures as a novel catalyst support in the cathode side of PEMFC: a critical review journal November 2015
Tutorial on the Fundamental Characteristics and Practical Properties of Nanostructured Thin Film (NSTF) Catalysts journal January 2013
Nanostructured Thin Film Electrocatalysts - Current Status and Future Potential journal October 2011
Current Status and Future Development of Catalyst Materials and Catalyst Layers for Proton Exchange Membrane Fuel Cells: An Industrial Perspective journal February 2017
Recent Advances in Electrocatalysts for Oxygen Reduction Reaction journal February 2016
Perspectives on oblique angle deposition of thin films: From fundamentals to devices journal March 2016
Thin-film growth dynamics with shadowing and re-emission effects journal January 2011
Advanced multi-component nanostructures designed by dynamic shadowing growth journal January 2011
Periodic Pt Nanorod Arrays with Controlled Porosity for Oxygen Reduction Reaction journal October 2012
Oxygen Reduction Reaction Electrocatalytic Activity of Glancing Angle Deposited Platinum Nanorod Arrays journal January 2011
Platinum Nanorod Arrays with Preferred Morphological and Crystal Properties for Oxygen Reduction Reaction journal November 2011
Sputter-Deposited Pt PEM Fuel Cell Electrodes: Particles vs Layers journal January 2009
GLAD Pt–Ni Alloy Nanorods for Oxygen Reduction Reaction journal November 2013
Oxygen Reduction Reaction Activity of Platinum Thin Films with Different Densities journal August 2017
Low-density silicon thin films for lithium-ion battery anodes journal February 2016
Density modulated nanoporous tungsten thin films and their nanomechanical properties journal June 2016
HIPS-GLAD core shell nanorod array photodetectors with enhanced photocurrent and reduced dark current journal October 2016
Conformal core-shell nanostructured photodetectors with enhanced photoresponsivity by high pressure sputter deposition journal May 2016
Cycling performance of density modulated multilayer silicon thin film anodes in Li-ion batteries journal January 2015
Effect of Shell Coating Techniques on Dynamic Response of Photoconductive Core/Shell Nanorod Arrays journal August 2015
Investigation of physical vapor deposition techniques of conformal shell coating for core/shell structures by Monte Carlo simulations journal May 2015
Stress reduction in sputter deposited films using nanostructured compliant layers by high working-gas pressures
  • Karabacak, Tansel; Senkevich, Jay. J.; Wang, Gwo-Ching
  • Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films, Vol. 23, Issue 4 https://doi.org/10.1116/1.1861940
journal July 2005
Characterization of porous Pt films deposited via sputtering journal October 2013
Effect of sputtering parameters on surface morphology and catalytic efficiency of thin platinum films journal April 2009
Effects of sputtering parameters on the performance of electrodes fabricated for proton exchange membrane fuel cells journal June 2006
Oxygen Reduction Reaction Activity of Nanocolumnar Platinum Thin Films by High Pressure Sputtering journal September 2020
Experimental Methods for Quantifying the Activity of Platinum Electrocatalysts for the Oxygen Reduction Reaction journal August 2010
Activity benchmarks and requirements for Pt, Pt-alloy, and non-Pt oxygen reduction catalysts for PEMFCs journal March 2005
Effect of the Catalyst Metal Content on PEMFC Durability journal July 2019
Fundamental structure forming phenomena of polycrystalline films and the structure zone models journal April 1998
High Rate Thick Film Growth journal August 1977
Scaling during shadowing growth of isolated nanocolumns journal September 2003
Structure-Zone Models Of Thin Films conference February 1988
Electrochemical Characterization of Shape-Controlled Pt Nanoparticles in Different Supporting Electrolytes journal April 2012
Measurement of oxygen reduction activities via the rotating disc electrode method: From Pt model surfaces to carbon-supported high surface area catalysts journal February 2008
The Impact of Geometric and Surface Electronic Properties of Pt-Catalysts on the Particle Size Effect in Electrocatalysis journal August 2005
Microstructural evolution in thin films journal June 1994
Nafion®-stabilised Pt/C electrocatalysts with efficient catalyst layer ionomer distribution for proton exchange membrane fuel cells journal January 2012
Conductive Nanostructured Materials for Supported Metal Catalysts journal March 2013
Analysis of the Effect of Pt Loading on Mass and Specific Activity in PEM Fuel Cells journal January 2013
The Particle Size Effect on the Oxygen Reduction Reaction Activity of Pt Catalysts: Influence of Electrolyte and Relation to Single Crystal Models journal November 2011
The effect of particle proximity on the oxygen reduction rate of size-selected platinum clusters journal July 2013
Best Practices and Testing Protocols for Benchmarking ORR Activities of Fuel Cell Electrocatalysts Using Rotating Disk Electrode journal May 2017