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Title: Synergistic Mn-Co catalyst outperforms Pt on high-rate oxygen reduction for alkaline polymer electrolyte fuel cells

Journal Article · · Nature Communications

Alkaline polymer electrolyte fuel cells are a class of fuel cells that enable the use of non-precious metal catalysts, particularly for the oxygen reduction reaction at the cathode. While there have been alternative materials exhibiting Pt-comparable activity in alkaline solutions, to the best of our knowledge none have outperformed Pt in fuel-cell tests. Here we report a Mn-Co spinel cathode that can deliver greater power, at high current densities, than a Pt cathode. The power density of the cell employing the Mn-Co cathode reaches 1.1 W cm-2 at 2.5 A cm-2 at 60 °C. Moreover, this catalyst outperforms Pt at low humidity. In-depth characterization reveals that the remarkable performance originates from synergistic effects where the Mn sites bind O2 and the Co sites activate H2O, so as to facilitate the proton-coupled electron transfer processes. Such an electrocatalytic synergy is pivotal to the high-rate oxygen reduction, particularly under water depletion/low humidity conditions.

Research Organization:
Energy Frontier Research Centers (EFRC) (United States). Center for Alkaline-Based Energy Solutions (CABES)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); National Natural Science Foundation of China (NSFC)
Grant/Contract Number:
SC0019445
OSTI ID:
1566612
Journal Information:
Nature Communications, Vol. 10, Issue 1; ISSN 2041-1723
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 167 works
Citation information provided by
Web of Science

References (55)

ATHENA , ARTEMIS , HEPHAESTUS : data analysis for X-ray absorption spectroscopy using IFEFFIT journal June 2005
Fe–N–C Catalyst Graphitic Layer Structure and Fuel Cell Performance journal June 2017
Nitrogen-Doped Carbon Nanotube Arrays with High Electrocatalytic Activity for Oxygen Reduction journal February 2009
UFF, a full periodic table force field for molecular mechanics and molecular dynamics simulations journal December 1992
First-principles prediction of redox potentials in transition-metal compounds with LDA + U journal December 2004
Electron-energy-loss spectra and the structural stability of nickel oxide: An LSDA+U study journal January 1998
Rapid room-temperature synthesis of nanocrystalline spinels as oxygen reduction and evolution electrocatalysts journal December 2010
High performance aliphatic-heterocyclic benzyl-quaternary ammonium radiation-grafted anion-exchange membranes journal January 2016
Elucidating Proton Involvement in the Rate-Determining Step for Pt/Pd-Based and Non-Precious-Metal Oxygen Reduction Reaction Catalysts Using the Kinetic Isotope Effect journal August 2016
Electrochemical reduction of oxygen on platinum nanoparticles in alkaline media journal December 1998
Phase and composition controllable synthesis of cobalt manganese spinel nanoparticles towards efficient oxygen electrocatalysis journal June 2015
GROMACS: High performance molecular simulations through multi-level parallelism from laptops to supercomputers journal September 2015
Cations in Octahedral Sites: A Descriptor for Oxygen Electrocatalysis on Transition-Metal Spinels journal April 2017
Designing Advanced Alkaline Polymer Electrolytes for Fuel Cell Applications journal October 2011
Electrocatalyst approaches and challenges for automotive fuel cells journal June 2012
Anion-exchange membranes in electrochemical energy systems journal January 2014
Theory of Coupled Electron and Proton Transfer Reactions journal December 2010
Activity targets for nanostructured platinum-group-metal-free catalysts in hydroxide exchange membrane fuel cells journal December 2016
Rational design of polyaromatic ionomers for alkaline membrane fuel cells with >1 W cm −2 power density journal January 2018
Molecular Dynamic Simulations of the Effect on the Hydration of Nafion in the Presence of a Platinum Nanoparticle journal May 2012
Steady state and transient simulation of anion exchange membrane fuel cells journal January 2018
Pt–Ru catalyzed hydrogen oxidation in alkaline media: oxophilic effect or electronic effect? journal January 2015
Interfacial water reorganization as a pH-dependent descriptor of the hydrogen evolution rate on platinum electrodes journal March 2017
Nosé–Hoover chains: The canonical ensemble via continuous dynamics journal August 1992
Alkaline polymer electrolyte fuel cells stably working at 80 °C journal June 2018
Understanding how high-performance anion exchange membrane fuel cells were achieved: Component, interfacial, and cell-level factors journal December 2018
Fe/N/C Nanotubes with Atomic Fe Sites: A Highly Active Cathode Catalyst for Alkaline Polymer Electrolyte Fuel Cells journal August 2017
The Spatial Structure in Liquid Water journal August 1994
Gold Deposition by Galvanic Displacement on Semiconductor Surfaces:  Effect of Substrate on Adhesion journal January 2002
Spinels: Controlled Preparation, Oxygen Reduction/Evolution Reaction Application, and Beyond journal July 2017
Efficient iterative schemes for ab initio total-energy calculations using a plane-wave basis set journal October 1996
Co3O4 nanocrystals on graphene as a synergistic catalyst for oxygen reduction reaction journal August 2011
Spatially Resolved Quantification of the Surface Reactivity of Solid Catalysts journal April 2016
Proton transfer dynamics control the mechanism of O2 reduction by a non-precious metal electrocatalyst journal May 2016
Surface Proton Transfer Promotes Four-Electron Oxygen Reduction on Gold Nanocrystal Surfaces in Alkaline Solution journal May 2017
The Magnitude of the Primary Kinetic Isotope Effect for Compounds of Hydrogen and Deuterium. journal June 1961
Water as a Promoter and Catalyst for Dioxygen Electrochemistry in Aqueous and Organic Media journal October 2015
Quantifying the density and utilization of active sites in non-precious metal oxygen electroreduction catalysts journal October 2015
Design principles for oxygen-reduction activity on perovskite oxide catalysts for fuel cells and metal–air batteries journal June 2011
Toward the rational design of non-precious transition metal oxides for oxygen electrocatalysis journal January 2015
Potential-Dependent Reorientation of Water Molecules at an Electrode/Electrolyte Interface Studied by Surface-Enhanced Infrared Absorption Spectroscopy journal January 1996
Dynamic Processes in Electrochemical Reactions Studied by Surface-Enhanced Infrared Absorption Spectroscopy (SEIRAS) journal December 1997
Combining theory and experiment in electrocatalysis: Insights into materials design journal January 2017
Constructing ionic highway in alkaline polymer electrolytes journal January 2014
Characterization of hydroxylated oxide film on iron surfaces and its acid-base properties using XPS journal December 1992
Alkaline polymer electrolyte fuel cells completely free from noble metal catalysts journal December 2008
Spatially Resolved Quantification of the Surface Reactivity of Solid Catalysts journal April 2016
Voltage- and time-dependent valence state transition in cobalt oxide catalysts during the oxygen evolution reaction journal April 2020
One-dimensional intergrowths in two-dimensional zeolite nanosheets and their effect on ultra-selective transport journal February 2020
Rational identification and characterisation of peptide ligands for targeting polysialic acid journal May 2020
First-principles prediction of redox potentials in transition-metal compounds with LDA+U text January 2004
Novel 1,2,4-triazole analogues as mushroom tyrosinase inhibitors: synthesis, kinetic mechanism, cytotoxicity and computational studies journal May 2020
Molecular basis for assembly of the shieldin complex and its implications for NHEJ journal April 2020
Deep learning enables rapid identification of potent DDR1 kinase inhibitors journal September 2019
Structural motifs of water on metal oxide surfaces journal January 2017

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