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Title: Tunable Bifunctional Activity of Mn x Co 3− x O 4 Nanocrystals Decorated on Carbon Nanotubes for Oxygen Electrocatalysis

Journal Article · · ChemSusChem
 [1];  [1];  [1];  [2];  [3];  [3]; ORCiD logo [1]
  1. Department of Chemistry University College London 20 Gordon Street London WC1H 0AJ UK
  2. CLS@APS Sector 20 Advanced Photon Source Canadian Light Source Inc., S44 Innovation Boulevard Saskatoon SK S7N 2V3 Canada
  3. Department of Chemistry Dalhousie University Halifax NS B3H 4R2 Canada

Abstract Noble‐metal‐free electrocatalysts are attractive for cathodic oxygen catalysis in alkaline membrane fuel cells, metal–air batteries, and electrolyzers. However, much of the structure–activity relationship is poorly understood. Herein, the comprehensive development of manganese cobalt oxide/nitrogen‐doped multiwalled carbon nanotube hybrids (Mn x Co 3− x O 4 @NCNTs) is reported for highly reversible oxygen reduction and evolution reactions (ORR and OER, respectively). The hybrid structures are rationally designed by fine control of surface chemistry and synthesis conditions, including tuning of functional groups at surfaces, congruent growth of nanocrystals with controllable phases and particle sizes, and ensuring strong coupling across catalyst–support interfaces. Electrochemical tests reveal distinctly different oxygen catalytic activities among the hybrids, Mn x Co 3− x O 4 @NCNTs. Nanocrystalline MnCo 2 O 4 @NCNTs (MCO@NCNTs) hybrids show superior ORR activity, with a favorable potential to reach 3 mA cm −2 and a high current density response, equivalent to that of the commercial Pt/C standard. Moreover, the hybrid structure exhibits tunable and durable catalytic activities for both ORR and OER, with a lowest overall potential of 0.93 V. It is clear that the long‐term electrochemical activities can be ensured by rational design of hybrid structures from the nanoscale.

Sponsoring Organization:
USDOE
OSTI ID:
1429553
Alternate ID(s):
OSTI ID: 1429554
Journal Information:
ChemSusChem, Journal Name: ChemSusChem Vol. 11 Journal Issue: 8; ISSN 1864-5631
Publisher:
Wiley Blackwell (John Wiley & Sons)Copyright Statement
Country of Publication:
Germany
Language:
English
Citation Metrics:
Cited by: 48 works
Citation information provided by
Web of Science

References (57)

Hollow mesoporous NiCo 2 O 4 nanocages as efficient electrocatalysts for oxygen evolution reaction journal January 2015
Ultrathin Cobalt–Manganese Layered Double Hydroxide Is an Efficient Oxygen Evolution Catalyst journal November 2014
Preparation and electrocatalytic activity of 3D hierarchical porous spinel CoFe2O4 hollow nanospheres as efficient catalyst for Oxygen Reduction Reaction and Oxygen Evolution Reaction journal January 2015
Nitrogen-Doped Carbon Nanotube Arrays with High Electrocatalytic Activity for Oxygen Reduction journal February 2009
Rechargeable Li–O2 batteries with a covalently coupled MnCo2O4–graphene hybrid as an oxygen cathode catalyst journal January 2012
A metal–organic framework-derived bifunctional oxygen electrocatalyst journal January 2016
Facile synthesis and excellent electrochemical properties of NiCo2O4 spinel nanowire arrays as a bifunctional catalyst for the oxygen reduction and evolution reaction journal January 2013
Metal–air batteries: from oxygen reduction electrochemistry to cathode catalysts journal January 2012
Active MnO x Electrocatalysts Prepared by Atomic Layer Deposition for Oxygen Evolution and Oxygen Reduction Reactions journal June 2012
Highly Efficient Oxygen Reduction Catalysts by Rational Synthesis of Nanoconfined Maghemite in a Nitrogen-Doped Graphene Framework journal May 2016
Electrochemical Properties of MnCo 2 O 4 Spinel Bifunctional Catalyst for Oxygen Reduction and Evolution Reaction journal January 2014
Oxygen reduction and evolution reactions of air electrodes using a perovskite oxide as an electrocatalyst journal March 2015
Oxygen reduction in alkaline medium at thin MnxCo3−xO4 (0≤x≤1) spinel films prepared by spray pyrolysis. Effect of oxide cation composition on the reaction kinetics journal April 2002
Nickel–vanadium monolayer double hydroxide for efficient electrochemical water oxidation journal June 2016
Cobalt-Manganese-Based Spinels as Multifunctional Materials that Unify Catalytic Water Oxidation and Oxygen Reduction Reactions journal November 2014
Active sites engineering leads to exceptional ORR and OER bifunctionality in P,N Co-doped graphene frameworks journal January 2017
Oxygen Reduction Electrocatalyst Based on Strongly Coupled Cobalt Oxide Nanocrystals and Carbon Nanotubes journal September 2012
An Efficient Bi-functional Electrocatalyst Based on Strongly Coupled CoFe 2 O 4 /Carbon Nanotubes Hybrid for Oxygen Reduction and Oxygen Evolution journal September 2015
Rapid room-temperature synthesis of nanocrystalline spinels as oxygen reduction and evolution electrocatalysts journal December 2010
Composition effects of spinel Mn Co3−O4 nanoparticles on their electrocatalytic properties in oxygen reduction reaction in alkaline media journal January 2015
The oxygen evolution reaction on platinum, iridium, ruthenium and their alloys at 80°C in acid solutions journal June 1978
Phase and composition controllable synthesis of cobalt manganese spinel nanoparticles towards efficient oxygen electrocatalysis journal June 2015
Cations in Octahedral Sites: A Descriptor for Oxygen Electrocatalysis on Transition-Metal Spinels journal April 2017
Chemical oxidation of multiwalled carbon nanotubes journal May 2008
Magnetic behavior of MnCo2O4+δ spinel obtained by thermal decomposition of binary oxalates journal September 2008
Dual-Phase Spinel MnCo 2 O 4 and Spinel MnCo 2 O 4 /Nanocarbon Hybrids for Electrocatalytic Oxygen Reduction and Evolution journal July 2014
Facile synthesis of NiCo2O4 nanosphere-carbon nanotubes hybrid as an efficient bifunctional electrocatalyst for rechargeable Zn–air batteries journal June 2016
A Perovskite Oxide Optimized for Oxygen Evolution Catalysis from Molecular Orbital Principles journal October 2011
Spinel ZnCo2O4/N-doped carbon nanotube composite: A high active oxygen reduction reaction electrocatalyst journal July 2014
Covalent Hybrid of Spinel Manganese–Cobalt Oxide and Graphene as Advanced Oxygen Reduction Electrocatalysts journal February 2012
High-performance non-spinel cobalt–manganese mixed oxide-based bifunctional electrocatalysts for rechargeable zinc–air batteries journal February 2016
Oxygen electrocatalysts in metal–air batteries: from aqueous to nonaqueous electrolytes journal January 2014
Interacting Carbon Nitride and Titanium Carbide Nanosheets for High-Performance Oxygen Evolution journal December 2015
Optimized Perovskite Electrocatalyst for Bifunctional Air Electrode by Impedance Spectroscopy Analysis journal April 2014
Oxygen Evolution at Platinum Electrodes in Alkaline Solutions journal January 1986
NiCo 2 S 4 @graphene as a Bifunctional Electrocatalyst for Oxygen Reduction and Evolution Reactions journal May 2013
Synthesis and Activities of Rutile IrO 2 and RuO 2 Nanoparticles for Oxygen Evolution in Acid and Alkaline Solutions journal January 2012
Electrocatalytic Oxygen Evolution at Surface-Oxidized Multiwall Carbon Nanotubes journal February 2015
Degradation Mechanisms of Pt/C Fuel Cell Catalysts under Simulated Start–Stop Conditions journal April 2012
Nitrogen-Doped Graphene as Efficient Metal-Free Electrocatalyst for Oxygen Reduction in Fuel Cells journal February 2010
Recent advances in zinc–air batteries journal January 2014
Strongly coupled inorganic–nano-carbon hybrid materials for energy storage journal January 2013
MOF derived Co 3 O 4 nanoparticles embedded in N-doped mesoporous carbon layer/MWCNT hybrids: extraordinary bi-functional electrocatalysts for OER and ORR journal January 2015
Co3O4 nanocrystals on graphene as a synergistic catalyst for oxygen reduction reaction journal August 2011
Interacting Carbon Nitride and Titanium Carbide Nanosheets for High-Performance Oxygen Evolution journal December 2015
Hierarchical nanostructured NiCo2O4 as an efficient bifunctional non-precious metal catalyst for rechargeable zinc–air batteries journal January 2014
Three-Dimensional MnCo 2 O 4.5 Mesoporous Networks as an Electrocatalyst for Oxygen Reduction Reaction journal January 2015
Spinel Mn–Co Oxide in N-Doped Carbon Nanotubes as a Bifunctional Electrocatalyst Synthesized by Oxidative Cutting journal May 2014
Multiporous MnCo 2 O 4 Microspheres as an Efficient Bifunctional Catalyst for Nonaqueous Li–O 2 Batteries journal November 2013
A CoFe2O4/graphene nanohybrid as an efficient bi-functional electrocatalyst for oxygen reduction and oxygen evolution journal March 2014
Nitrogen and Phosphorus Dual-Doped Graphene/Carbon Nanosheets as Bifunctional Electrocatalysts for Oxygen Reduction and Evolution journal June 2015
Iridium As Catalyst and Cocatalyst for Oxygen Evolution/Reduction in Acidic Polymer Electrolyte Membrane Electrolyzers and Fuel Cells journal April 2014
Switching effective oxygen reduction and evolution performance by controlled graphitization of a cobalt–nitrogen–carbon framework system journal January 2016
Li–O2 and Li–S batteries with high energy storage journal January 2012
MnO 2 -Graphene Composite Air Electrode for Rechargeable Li-Air Batteries journal January 2012
A metal-free bifunctional electrocatalyst for oxygen reduction and oxygen evolution reactions journal April 2015
Mixed valency spinel oxides of transition metals and electrocatalysis: case of the MnxCo3−xO4 system journal December 1998

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