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Cobalt-Based Nitride-Core Oxide-Shell Oxygen Reduction Electrocatalysts

Journal Article · · Journal of the American Chemical Society
DOI:https://doi.org/10.1021/jacs.9b10809· OSTI ID:1767665
Developing high-performance, low-cost, and conductive nonprecious electrocatalysts for the oxygen reduction reaction (ORR) has been a key challenge for advancing fuel cell technologies. Here, we report on a novel family of cobalt nitrides (CoxN/C, x = 2, 3, 4) as ORR electrocatalysts in alkaline fuel cells. Co4N/C exhibited the highest ORR activity among the three types of cobalt nitrides studied, with a half-wave potential (E1/2) of 0.875 V vs RHE in 1 M KOH, rivaling that of commercial Pt/C (0.89 V). Moreover, Co4N/C showed an 8-fold improvement in mass activity at 0.85 V, when compared to cobalt oxide, Co3O4/C, and a negligible degradation (ΔE1/2 = 14 mV) after 10 000 potential cycles. The superior performance was ascribed to the formation of a conductive nitride core surrounded by a naturally formed thin oxide shell (about 2 nm). Finally, the conductive nitride core effectively mitigated the low conductivity of the metal oxide, and the thin oxide shell on the surface provided the active sites for the ORR. Strategies developed herein represent a promising approach for the design of other novel metal nitrides as electrocatalysts for fuel cells.
Research Organization:
Cornell Univ., Ithaca, NY (United States); Energy Frontier Research Centers (EFRC) (United States). Center for Alkaline-Based Energy Solutions (CABES)
Sponsoring Organization:
National Science Foundation (NSF); USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC0019445
OSTI ID:
1767665
Journal Information:
Journal of the American Chemical Society, Journal Name: Journal of the American Chemical Society Journal Issue: 49 Vol. 141; ISSN 0002-7863
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English

References (46)

In Situ Coupling Strategy for the Preparation of FeCo Alloys and Co 4 N Hybrid for Highly Efficient Oxygen Evolution journal October 2017
Cobalt Molybdenum Oxynitrides: Synthesis, Structural Characterization, and Catalytic Activity for the Oxygen Reduction Reaction journal August 2013
Metallic Co 4 N Porous Nanowire Arrays Activated by Surface Oxidation as Electrocatalysts for the Oxygen Evolution Reaction journal October 2015
Nitrogen-Rich Manganese Oxynitrides with Enhanced Catalytic Activity in the Oxygen Reduction Reaction journal May 2016
Rapid Synthesis of Cobalt Nitride Nanowires: Highly Efficient and Low-Cost Catalysts for Oxygen Evolution journal June 2016
Preparation of Co-N films by rf-sputtering journal August 1987
Transformation of nitrogen structures in carbonization of model compounds determined by XPS journal January 1995
The solubility and diffusion coefficient of oxygen in potassium hydroxide solutions journal March 1967
Adsorption and decomposition of ammonia on a W(110) surface: Photoemission fingerprinting and interpretation of the core level binding energies using the equivalent core approximation journal July 1982
Adsorption and decomposition of ammonia on W(100); XPS and UPS studies journal August 1983
Activity benchmarks and requirements for Pt, Pt-alloy, and non-Pt oxygen reduction catalysts for PEMFCs journal March 2005
Structure and magnetization of Co 4 N thin film journal February 2018
Spinels: Controlled Preparation, Oxygen Reduction/Evolution Reaction Application, and Beyond journal July 2017
Nonprecious Metal Catalysts for Oxygen Reduction in Heterogeneous Aqueous Systems journal December 2017
Ultrathin Cobalt Oxide Overlayer Promotes Catalytic Activity of Cobalt Nitride for the Oxygen Reduction Reaction journal January 2018
Metallic Ni 3 N Quantum Dots as a Synergistic Promoter for NiO Nanosheet toward Efficient Oxygen Reduction Electrocatalysis journal March 2019
Urchin-like CoP Nanocrystals as Hydrogen Evolution Reaction and Oxygen Reduction Reaction Dual-Electrocatalyst with Superior Stability journal October 2015
Electronic Band Structure and Electrocatalytic Performance of Cu 3 N Nanocrystals journal June 2018
Limitations and Improvement Strategies for Early-Transition-Metal Nitrides as Competitive Catalysts toward the Oxygen Reduction Reaction journal August 2016
Effect of pH on the Activity of Platinum Group Metal-Free Catalysts in Oxygen Reduction Reaction journal March 2018
Ni-Doped Cobalt–Cobalt Nitride Heterostructure Arrays for High-Power Supercapacitors journal September 2018
High-Loading Composition-Tolerant Co–Mn Spinel Oxides with Performance beyond 1 W/cm 2 in Alkaline Polymer Electrolyte Fuel Cells journal May 2019
Brush-Like Cobalt Nitride Anchored Carbon Nanofiber Membrane: Current Collector-Catalyst Integrated Cathode for Long Cycle Li–O 2 Batteries journal December 2017
Noble-Metal-Free Iron Nitride/Nitrogen-Doped Graphene Composite for the Oxygen Reduction Reaction journal January 2019
Copper Nitride Nanocubes: Size-Controlled Synthesis and Application as Cathode Catalyst in Alkaline Fuel Cells journal October 2011
Unification of Catalytic Water Oxidation and Oxygen Reduction Reactions: Amorphous Beat Crystalline Cobalt Iron Oxides journal December 2014
In Situ Coupling of Strung Co 4 N and Intertwined N–C Fibers toward Free-Standing Bifunctional Cathode for Robust, Efficient, and Flexible Zn–Air Batteries journal August 2016
Pt-Decorated Composition-Tunable Pd–Fe@Pd/C Core–Shell Nanoparticles with Enhanced Electrocatalytic Activity toward the Oxygen Reduction Reaction journal May 2018
In Situ X-ray Absorption Spectroscopy of a Synergistic Co–Mn Oxide Catalyst for the Oxygen Reduction Reaction journal December 2018
A Strategy for Increasing the Efficiency of the Oxygen Reduction Reaction in Mn-Doped Cobalt Ferrites journal February 2019
Metal–Organic-Framework-Derived Co–Fe Bimetallic Oxygen Reduction Electrocatalysts for Alkaline Fuel Cells journal June 2019
Electrocatalyst approaches and challenges for automotive fuel cells journal June 2012
Design principles for oxygen-reduction activity on perovskite oxide catalysts for fuel cells and metal–air batteries journal June 2011
Co3O4 nanocrystals on graphene as a synergistic catalyst for oxygen reduction reaction journal August 2011
Structurally ordered intermetallic platinum–cobalt core–shell nanoparticles with enhanced activity and stability as oxygen reduction electrocatalysts journal October 2012
Identification of catalytic sites for oxygen reduction in iron- and nitrogen-doped graphene materials journal August 2015
Energy and fuels from electrochemical interfaces journal December 2016
Synergistic Mn-Co catalyst outperforms Pt on high-rate oxygen reduction for alkaline polymer electrolyte fuel cells journal April 2019
Exploration of octahedrally shaped MnCo 2 O 4 catalyst particles for visible light driven photocatalytic water splitting reaction journal January 2015
Binary transition metal nitrides with enhanced activity and durability for the oxygen reduction reaction journal January 2015
In situ electron energy loss spectroscopy study of metallic Co and Co oxides journal September 2010
Revealing the atomic ordering of binary intermetallics using in situ heating techniques at multilength scales journal January 2019
Octahedral spinel electrocatalysts for alkaline fuel cells journal November 2019
2 p x-ray absorption of 3 d transition-metal compounds: An atomic multiplet description including the crystal field journal September 1990
Chemical effects at metal/oxide interfaces studied by x-ray-absorption spectroscopy journal November 2001
Direct atomic-level insight into the active sites of a high-performance PGM-free ORR catalyst journal August 2017

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