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Title: A highly efficient and durable air electrode for intermediate-temperature reversible solid oxide cells

Journal Article · · Applied Catalysis. B, Environmental
 [1];  [2];  [3];  [2];  [2];  [2]; ORCiD logo [2];  [2];  [2];  [4];  [2]
  1. Georgia Institute of Technology, Atlanta, GA (United States); OSTI
  2. Georgia Institute of Technology, Atlanta, GA (United States)
  3. Georgia Institute of Technology, Atlanta, GA (United States); Tianjin Univ. (China)
  4. Phillips 66 Company, Houston, TX (United States)

Solid oxide cells (SOCs) are considered the most efficient system for reversible conversion between chemical and electrical energy, thus having potential to be an attractive technology for a sustainable energy future. To achieve high round-trip efficiency, highly efficient and durable air electrode materials are needed to minimize energy loss associated with oxygen reduction reaction (ORR) and oxygen evolution reaction (OER). Here we report a bi-functional air electrode material, PrBa0.9Co1.96Nb0.04O5+δ, demonstrating outstanding electrochemical performance (e.g., achieving peak power densities of over 1.5 and 1 W cm–2, respectively, for Gd0.1Ce0.9O1.95 and BaZr0.1Ce0.7Y0.1Yb0.1O3-δ based fuel cells at 600 °C) while maintaining excellent stability (e.g., having a degradation rate of 40 mV per 1,000 h for H2O electrolysis cells). Finally, the excellent property of the new electrode is attributed to the improved stability from Nb doping and the enhanced electrocatalytic activity from tuning Ba deficiency, as confirmed by experimental results and computational analysis.

Research Organization:
Georgia Institute of Technology, Atlanta, GA (United States)
Sponsoring Organization:
USDOE; USDOE Office of Energy Efficiency and Renewable Energy (EERE)
Grant/Contract Number:
EE0008439
OSTI ID:
1976835
Journal Information:
Applied Catalysis. B, Environmental, Journal Name: Applied Catalysis. B, Environmental Journal Issue: C Vol. 299; ISSN 0926-3373
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

References (51)

Boosting the Activity of BaCo 0.4 Fe 0.4 Zr 0.1 Y 0.1 O 3− δ Perovskite for Oxygen Reduction Reactions at Low‐to‐Intermediate Temperatures through Tuning B‐Site Cation Deficiency journal August 2019
Triple-Conducting Layered Perovskites as Cathode Materials for Proton-Conducting Solid Oxide Fuel Cells journal August 2014
Surface Segregation in Solid Oxide Cell Oxygen Electrodes: Phenomena, Mitigation Strategies and Electrochemical Properties journal August 2020
Electrical conductivity and chemical diffusion coefficient of Sr-doped lanthanum chromites journal August 1995
Fuel cell materials and components☆☆☆The Golden Jubilee Issue—Selected topics in Materials Science and Engineering: Past, Present and Future, edited by S. Suresh. journal November 2003
Synthesis, characterization and evaluation of cation-ordered LnBaCo2O5+δ as materials of oxygen permeation membranes and cathodes of SOFCs journal October 2008
Surface chemistry evolution in LnBaCo2O5 +  double perovskites for oxygen electrodes journal December 2014
A Highly Efficient Multi-phase Catalyst Dramatically Enhances the Rate of Oxygen Reduction journal May 2018
Evaluation of Ba0.5Sr0.5Co0.8Fe0.2O3−δ as a potential cathode for an anode-supported proton-conducting solid-oxide fuel cell journal May 2008
Hybrid-solid oxide electrolysis cell: A new strategy for efficient hydrogen production journal February 2018
Proton conducting oxides: A review of materials and applications for renewable energy conversion and storage journal July 2019
Toward Reducing the Operation Temperature of Solid Oxide Fuel Cells: Our Past 15 Years of Efforts in Cathode Development journal July 2020
New, Efficient, and Reliable Air Electrode Material for Proton-Conducting Reversible Solid Oxide Cells journal January 2018
Surface Cation Segregation and Chromium Deposition on the Double-Perovskite Oxide PrBaCo 2 O 5+δ journal February 2018
High Temperature Electrolysis in Alkaline Cells, Solid Proton Conducting Cells, and Solid Oxide Cells journal October 2014
A high-performance cathode for the next generation of solid-oxide fuel cells journal September 2004
A tailored double perovskite nanofiber catalyst enables ultrafast oxygen evolution journal February 2017
Tailoring gadolinium-doped ceria-based solid oxide fuel cells to achieve 2 W cm−2 at 550 °C journal June 2014
Improved chemical and electrochemical stability of perovskite oxides with less reducible cations at the surface journal June 2016
Self-sustainable protonic ceramic electrochemical cells using a triple conducting electrode for hydrogen and power production journal April 2020
Exceptional power density and stability at intermediate temperatures in protonic ceramic fuel cells journal February 2018
A robust fuel cell operated on nearly dry methane at 500 °C enabled by synergistic thermal catalysis and electrocatalysis journal October 2018
Highly efficient reversible protonic ceramic electrochemical cells for power generation and fuel production journal March 2019
Mixed proton and electron conducting double perovskite anodes for stable and efficient tubular proton ceramic electrolysers journal June 2019
Highly durable, coking and sulfur tolerant, fuel-flexible protonic ceramic fuel cells journal May 2018
Highly efficient and robust cathode materials for low-temperature solid oxide fuel cells: PrBa0.5Sr0.5Co2−xFexO5+δ journal August 2013
Surface termination and subsurface restructuring of perovskite-based solid oxide electrode materials journal January 2014
Structural and oxygen-transport studies of double perovskites PrBa 1−x Co 2 O 5+δ (x = 0.00, 0.05, and 0.10) toward their application as superior oxygen reduction electrodes journal January 2014
A perspective on low-temperature solid oxide fuel cells journal January 2016
Layered LnBaCo 2 O 5+δ perovskite cathodes for solid oxide fuel cells: an overview and perspective journal January 2015
Zr and Y co-doped perovskite as a stable, high performance cathode for solid oxide fuel cells operating below 500 °C journal January 2017
A robust and active hybrid catalyst for facile oxygen reduction in solid oxide fuel cells journal January 2017
Cobalt-substituted SrTi 0.3 Fe 0.7 O 3−δ : a stable high-performance oxygen electrode material for intermediate-temperature solid oxide electrochemical cells journal January 2018
A highly active, CO 2 -tolerant electrode for the oxygen reduction reaction journal January 2018
Protonic ceramic electrochemical cells for hydrogen production and electricity generation: exceptional reversibility, stability, and demonstrated faradaic efficiency journal January 2019
High performing triple-conductive Pr 2 NiO 4+δ anode for proton-conducting steam solid oxide electrolysis cell journal January 2018
Tuning the defects of the triple conducting oxide BaCo 0.4 Fe 0.4 Zr 0.1 Y 0.1 O 3−δ perovskite toward enhanced cathode activity of protonic ceramic fuel cells journal January 2019
Understanding of A-site deficiency in layered perovskites: promotion of dual reaction kinetics for water oxidation and oxygen reduction in protonic ceramic electrochemical cells journal January 2020
High performance anode-supported solid oxide fuel cell based on thin-film electrolyte and nanostructured cathode journal January 2010
Oxygen electrocatalysts for water electrolyzers and reversible fuel cells: status and perspective journal January 2012
Enhancing SOFC cathode performance by surface modification through infiltration journal January 2014
Proton-conducting oxides for energy conversion and storage journal March 2020
Special points for Brillouin-zone integrations journal June 1976
High-precision sampling for Brillouin-zone integration in metals journal August 1989
Efficient iterative schemes for ab initio total-energy calculations using a plane-wave basis set journal October 1996
Generalized Gradient Approximation Made Simple journal October 1996
A Perovskite Oxide Optimized for Oxygen Evolution Catalysis from Molecular Orbital Principles journal October 2011
Readily processed protonic ceramic fuel cells with high performance at low temperatures journal July 2015
Distributions of Charged Defects in Mixed Ionic-Electronic Conductors journal January 1997
Precise Determination of the Chemical Diffusion Coefficient of Calcium-Doped Lanthanum Chromites by Means of Electrical Conductivity Relaxation journal January 1994
Hydration Properties and Rate Determining Steps of the Oxygen Reduction Reaction of Perovskite-Related Oxides as H + -SOFC Cathodes journal January 2012