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

Electrocatalytic Oxidation of Ammonia on Transition-Metal Surfaces: A First-Principles Study

Journal Article · · Journal of Physical Chemistry. C
DOI:https://doi.org/10.1021/jp512981f· OSTI ID:1405312
 [1];  [2];  [2]
  1. Univ. of Wisconsin-Madison, Madison, WI (United States). Dept. of Chemical and Biological Engineering; Department of Chemical and Biological Engineering, University of Wisconsin−Madison
  2. Univ. of Wisconsin-Madison, Madison, WI (United States). Dept. of Chemical and Biological Engineering
Here, we investigate the catalytic electro-oxidation of ammonia on model close-packed surfaces of Au, Ag, Cu, Pd, Pt, Ni, Ir, Co, Rh, Ru, Os, and Re to derive insights for the reaction mechanism and evaluate the catalysts based on their energy efficiency and activity in the context of their application in fuel cells. Two mechanisms, which are differentiated by their N–N bond formation step, are compared: (1) a mechanism proposed by Gerischer and Mauerer, whereby the N–N bond formation occurs between hydrogenated NHx adsorbed species, and (2) a mechanism in which N–N bond formation occurs between N adatoms. The results of our study show that the mechanism proposed by Gerischer and Mauerer is kinetically preferred and that the formation of N adatoms poisons the surface of the catalyst. On the basis of a simple Sabatier analysis, we predict that Pt is the most active monometallic catalyst followed by Ir and Cu, whereas all other metal surfaces studied here have significantly lower activity. We conclude by outlining some design principles for bimetallic alloy catalysts for NH3 electro-oxidation.
Research Organization:
Univ. of Wisconsin-Madison, Madison, WI (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Contributing Organization:
EMSL, a National scientific user facility at Pacific Northwest National Laboratory (PNNL); and the National Energy Research Scientific Computing Center (NERSC); the Center for Nanoscale Materials at Argonne National Laboratory (ANL)
Grant/Contract Number:
FG02-05ER15731
OSTI ID:
1405312
Journal Information:
Journal of Physical Chemistry. C, Journal Name: Journal of Physical Chemistry. C Journal Issue: 26 Vol. 119; ISSN 1932-7447
Publisher:
American Chemical SocietyCopyright Statement
Country of Publication:
United States
Language:
English

References (56)

Fuel Cells: Principles, Types, Fuels, and Applications journal December 2000
Electrochemical Investigation of Amperometric Ammonia Gas Sensors journal September 1990
Ammonia oxidation on electrodeposited Pt–Ir alloys journal September 2007
Graphene-Supported Pt, Ir, and Pt-Ir Nanoparticles as Electrocatalysts for the Oxidation of Ammonia journal January 2013
Electrochemical treatment of tannery wastewater using TiPt and Ti/Pt/Ir electrodes journal February 1995
Pt–Ir and Pt–Cu binary alloys as the electrocatalyst for ammonia oxidation journal April 2004
Electrochemical oxidation of ammonia in alkaline solutions: its application to an amperometric sensor journal January 1998
A DEMS and cyclic voltammetry study of NH3 oxidation on platinized platinum journal May 1998
The role of adsorbates in the electrochemical oxidation of ammonia on noble and transition metal electrodes journal June 2001
Untersuchungen Zur anodischen Oxidation von Ammoniak an Platin-Elektroden journal May 1970
Methanol oxidation and direct methanol fuel cells: a selective review journal January 1999
Development of a high performance electrochemical wastewater treatment system journal October 2003
A review of the state-of-the-art of the methanol crossover in direct methanol fuel cells journal November 1999
Fuel processing for low-temperature and high-temperature fuel cells Challenges, and opportunities for sustainable development in the 21st century journal December 2002
Selective electrocatalysis of ammonia oxidation on Pt(100) sites in alkaline medium journal January 2003
Electrolysis of water on (oxidized) metal surfaces journal December 2005
Effect of the nature of (100) surface sites on the electroactivity of macroscopic Pt electrodes for the electrooxidation of ammonia journal August 2012
Optimization of Pt–Ir on carbon fiber paper for the electro-oxidation of ammonia in alkaline media journal July 2010
Electrochemical oxidation of ammonia on carbon-supported bi-metallic PtM (M=Ir, Pd, SnOx) nanoparticles journal October 2011
Catalytic electrolysis of ammonia on platinum in alkaline solution for hydrogen generation journal November 2008
Ammonia electro-oxidation on alloyed PtIr nanoparticles of well-defined size journal February 2013
Direct ammonia fuel cell performance using PtIr/C as anode electrocatalysts journal March 2014
DEMS study of ammonia oxidation on platinum basal planes journal March 2006
Electrolysis of water on oxide surfaces journal September 2007
Study of the electrochemical oxidation of ammonia on platinum in alkaline solution: Effect of electrodeposition potential on the activity of platinum journal February 2013
On the use of ammonia electrolysis for hydrogen production journal March 2005
Electrodeposited Ni–Pt binary alloys as electrocatalysts for oxidation of ammonia journal November 2007
Screening of electrocatalysts for direct ammonia fuel cell: Ammonia oxidation on PtMe (Me: Ir, Rh, Pd, Ru) and preferentially oriented Pt(100) nanoparticles journal September 2007
Electrodeposited platinum thin films with preferential (100) orientation: Characterization and electrocatalytic properties for ammonia and formic acid oxidation journal March 2013
Investigation of the electrocatalytic activity of nickel for ammonia oxidation journal April 2008
Evaluation of anode materials for the electro-oxidation of ammonia and ammonium ions journal October 2011
Reactivity descriptors for direct methanol fuel cell anode catalysts journal November 2008
Trends in Selective Hydrogen Peroxide Production on Transition Metal Surfaces from First Principles journal November 2012
Bond-Making and Breaking between Carbon, Nitrogen, and Oxygen in Electrocatalysis journal October 2014
Structure Sensitivity of Methanol Electrooxidation on Transition Metals journal October 2009
Origin of the Overpotential for Oxygen Reduction at a Fuel-Cell Cathode journal November 2004
Ammonia Selective Oxidation on Pt(100) Sites in an Alkaline Medium journal July 2005
Combined First-Principles Molecular Dynamics/Density Functional Theory Study of Ammonia Electrooxidation on Pt(100) Electrode journal November 2013
Materials for fuel-cell technologies journal November 2001
Towards the computational design of solid catalysts journal April 2009
Alloy catalysts designed from first principles journal October 2004
Computational high-throughput screening of electrocatalytic materials for hydrogen evolution journal October 2006
Recent advances in electrocatalysts for electro-oxidation of ammonia journal January 2013
Electrocatalytic oxidation of ammonia on Pt(111) and Pt(100) surfaces journal January 2006
Estimations of electric field effects on the oxygen reduction reaction based on the density functional theory journal January 2007
A climbing image nudged elastic band method for finding saddle points and minimum energy paths journal December 2000
Soft self-consistent pseudopotentials in a generalized eigenvalue formalism journal April 1990
Adsorbate-substrate and adsorbate-adsorbate interactions of Na and K adlayers on Al(111) journal December 1992
Atoms, molecules, solids, and surfaces: Applications of the generalized gradient approximation for exchange and correlation journal September 1992
Dipole correction for surface supercell calculations journal May 1999
Improved adsorption energetics within density-functional theory using revised Perdew-Burke-Ernzerhof functionals journal March 1999
Correlations in coverage-dependent atomic adsorption energies on Pd(111) journal May 2009
Special Points in the Brillouin Zone journal December 1973
Simple model explaining and predicting coverage-dependent atomic adsorption energies on transition metal surfaces journal July 2010
E LECTRONIC S TRUCTURE AND C ATALYSIS ON M ETAL S URFACES journal October 2002
Improved Electrocatalysts for Ammonia Fuel Cell Anodes journal January 1969

Cited By (8)

A Direct Ammonia Microfluidic Fuel Cell using NiCu Nanoparticles Supported on Carbon Nanotubes as an Electrocatalyst journal August 2018
Elementary kinetics of nitrogen electroreduction to ammonia on late transition metals journal January 2019
Electrochemical nitrogen fixation and utilization: theories, advanced catalyst materials and system design journal January 2019
Structure Sensitivity of Formic Acid Electrooxidation on Transition Metal Surfaces: A First-Principles Study journal January 2018
Temperature-Dependent Kinetics and Reaction Mechanism of Ammonia Oxidation on Pt, Ir, and PtIr Alloy Catalysts journal January 2018
Review—Ammonia Oxidation Electrocatalysis for Hydrogen Generation and Fuel Cells journal January 2018
The Direct Ammonia Fuel Cell and a Common Pattern of Electrocatalytic Processes journal January 2018
A Highly Efficient Pt-NiO/C Electrocatalyst for Ammonia Electro-Oxidation journal January 2017