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Title: Advanced oxygen-electrode-supported solid oxide electrochemical cells with Sr(Ti,Fe)O3–δ-based fuel electrodes for electricity generation and hydrogen production

Journal Article · · Journal of Materials Chemistry. A
DOI:https://doi.org/10.1039/d0ta06678h· OSTI ID:1832407

Sr(Ti0.3Fe0.7)O3–δ (STF) and the associated exsolution electrodes Sr0.95(Ti0.3Fe0.63Ru0.07)O3–δ (STFR), or Sr0.95(Ti0.3Fe0.63Ni0.07)O3–δ (STFN) are alternatives to Ni-based cermet fuel electrodes for solid oxide electrochemical cells (SOCs). They can provide improved tolerance to redox cycling and fuel impurities, and may allow direct operation with hydrocarbon fuels. However, such perovskite-oxide-based electrodes present processing challenges for co-sintering with thin electrolytes to make fuel electrode supported SOCs. Thus, they have been mostly limited to electrolyte-supported SOCs. Here, we report the first example of the application of perovskite oxide fuel electrodes in novel oxygen electrode supported SOCs (OESCs) with thin YSZ electrolytes, and demonstrate their excellent performance. The OESCs have La0.8Sr0.2MnO3–δ–Zr0.92Y0.16O2–δ (LSM–YSZ) oxygen electrode-supports that are enhanced via infiltration of SrTi0.3Fe0.6Co0.1O3–δ, while the fuel electrodes are either Ni-YSZ, STF, STFN, or STFR. Fuel cell power density as high as 1.12 W cm–2 is obtained at 0.7 V and 800 °C in humidified hydrogen and air with the STFR electrode, 60% higher than the same cell made with a Ni-YSZ electrode. Electrolysis current density as high as –1.72 A cm–2 is obtained at 1.3 V and 800 °C in 50% H2O to 50% H2 mode; the STFR cell yields a value 72% higher than the same cell made with a Ni-YSZ electrode, and competitive with the widely used conventional Ni-YSZ-supported cells. The high performance is due in part to the low resistance of the thin YSZ electrolyte, and also to the low fuel electrode polarization resistance, which decreases with fuel electrode in the order: Ni-YSZ > STF > STFN > STFR. The high performance of the latter two electrodes is due to exsolution of catalytic metal nanoparticles; the results are discussed in terms of the microstructure and properties of each electrode material, and surface oxygen exchange resistance values are obtained over a range of conditions for STF, STFN, and STFN. Furthermore, the STF fuel electrodes also provide good stability during redox cycling.

Research Organization:
Northwestern Univ., Evanston, IL (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
SC0016965
OSTI ID:
1832407
Alternate ID(s):
OSTI ID: 1734439; OSTI ID: 1878147
Journal Information:
Journal of Materials Chemistry. A, Vol. 8, Issue 48; ISSN 2050-7488
Publisher:
Royal Society of ChemistryCopyright Statement
Country of Publication:
United States
Language:
English

References (60)

(La0.75Sr0.25)0.95Mn0.5Cr0.5O3 as the cathode of solid oxide electrolysis cells for high temperature hydrogen production from steam journal January 2008
Status of tubular SOFC field unit demonstrations journal March 2000
In-situ exsolution of nanoparticles from Ni substituted Sr2Fe1.5Mo0.5O6 perovskite oxides with different Ni doping contents journal July 2020
Electrochemical Characterization of Ni/(Sc)YSZ Electrodes journal April 2010
High-performance SrFe0.1Mo0.9O3- -based composites for the anode application in solid oxide fuel cells journal September 2020
Increased solid-oxide fuel cell power density using interfacial ceria layers journal June 1997
High performance cathode-supported SOFC with perovskite anode operating in weakly humidified hydrogen and methane journal April 2007
New Opportunity for in Situ Exsolution of Metallic Nanoparticles on Perovskite Parent journal July 2016
Exsolution of Fe–Ni alloy nanoparticles from (La,Sr)(Cr,Fe,Ni)O 3 perovskites as potential oxygen transport membrane catalysts for methane reforming journal January 2019
Exsolved Alloy Nanoparticles Decorated Ruddlesden–Popper Perovskite as Sulfur-Tolerant Anodes for Solid Oxide Fuel Cells journal August 2020
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
Advanced anodes for high-temperature fuel cells journal January 2004
Step-change in high temperature steam electrolysis performance of perovskite oxide cathodes with exsolution of B-site dopants journal January 2013
An ingenious Ni/Ce co-doped titanate based perovskite as a coking-tolerant anode material for direct hydrocarbon solid oxide fuel cells journal January 2015
Enhancing Perovskite Electrocatalysis of Solid Oxide Cells Through Controlled Exsolution of Nanoparticles journal August 2017
How the distribution of relaxation times enhances complex equivalent circuit models for fuel cells journal September 2020
Cathode-supported tubular solid oxide fuel cell technology: A critical review journal September 2013
Reduced-temperature firing of solid oxide fuel cells with zirconia/ceria bi-layer electrolytes journal August 2014
Y-doped SrTiO3 based sulfur tolerant anode for solid oxide fuel cells journal February 2007
Study of phase stability of SrTi0.3Fe0.7O3−δ perovskite in reducing atmosphere: Effect of microstructure journal December 2019
Rate determining steps of fuel oxidation over CeO2 impregnated Ni-YSZ in H2+ H2O + CO + CO2 ambient journal May 2016
Oxygen diffusion in yttria stabilised zirconia—experimental results and molecular dynamics calculations journal January 2003
High-Performance Anode Material Sr 2 FeMo 0.65 Ni 0.35 O 6−δ with In Situ Exsolved Nanoparticle Catalyst journal August 2016
A Regenerative Coking and Sulfur Resistant Composite Anode with Cu Exsolution for Intermediate Temperature Solid Oxide Fuel Cells journal January 2018
Double-Layered Perovskite Anode with in Situ Exsolution of a Co–Fe Alloy To Cogenerate Ethylene and Electricity in a Proton-Conducting Ethane Fuel Cell journal December 2015
Ni-Substituted Sr(Ti,Fe)O3 SOFC Anodes: Achieving High Performance via Metal Alloy Nanoparticle Exsolution journal March 2018
RedOx study of anode-supported solid oxide fuel cell journal August 2009
Redox Cycling of Ni-Based Solid Oxide Fuel Cell Anodes: A Review journal June 2007
Metallic porous nitride single crystals at two-centimeter scale delivering enhanced pseudocapacitance journal October 2019
Understanding and Tuning the Hydrogen Evolution Reaction on Pt-Covered Tungsten Carbide Cathodes journal January 2016
Pd-substituted (La,Sr)CrO3−δ–Ce0.9Gd0.1O2−δ solid oxide fuel cell anodes exhibiting regenerative behavior journal March 2011
Electrochemical performance and stability of SrTi0.3Fe0.6Co0.1O3-δ infiltrated La0.8Sr0.2MnO3Zr0.92Y0.16O2-δ oxygen electrodes for intermediate-temperature solid oxide electrochemical cells journal June 2019
Fabrication and characterization of a cathode-support solid oxide fuel cell by tape casting and lamination journal December 2013
Bismuth doped La 0.75 Sr 0.25 Cr 0.5 Mn 0.5 O 3−δ perovskite as a novel redox-stable efficient anode for solid oxide fuel cells journal January 2020
Influence of the Discretization Methods on the Distribution of Relaxation Times Deconvolution: Implementing Radial Basis Functions with DRTtools journal December 2015
Electrochemical performance of La-doped Sr2MgMoO6−δ in natural gas journal August 2007
Mechanisms of PrOx performance enhancement of oxygen electrodes for low and intermediate temperature solid oxide fuel cells journal December 2019
The Electrochemical Properties of Sr(Ti,Fe)O 3-δ for Anodes in Solid Oxide Fuel Cells journal January 2017
A perspective on low-temperature solid oxide fuel cells journal January 2016
Studies on chemical compatibility of lanthanum strontium manganite with yttria-stabilized zirconia journal October 2004
Electrical conductivity and thermal expansion of Ln-substituted SrTiO3 for solid oxide cell electrodes and interconnects: The effect of rare-earth cation size journal October 2020
A-site-deficiency facilitated in situ growth of bimetallic Ni–Fe nano-alloys: a novel coking-tolerant fuel cell anode catalyst journal January 2015
Advanced perovskite anodes for solid oxide fuel cells: A review journal November 2019
Switching on electrocatalytic activity in solid oxide cells journal August 2016
A-site deficient perovskite: the parent for in situ exsolution of highly active, regenerable nano-particles as SOFC anodes journal January 2015
In situ exsolved FeNi 3 nanoparticles on nickel doped Sr 2 Fe 1.5 Mo 0.5 O 6−δ perovskite for efficient electrochemical CO 2 reduction reaction journal January 2019
In-situ exsolved FeRu alloy nanoparticles on Ruddlesden-Popper oxides for direct hydrocarbon fuel solid oxide fuel cells journal August 2020
Sulfur-Tolerant Redox-Reversible Anode Material for Direct Hydrocarbon Solid Oxide Fuel Cells journal February 2012
Modeling Elementary Heterogeneous Chemistry and Electrochemistry in Solid-Oxide Fuel Cells journal January 2005
Improved gas diffusion within microchanneled cathode supports of SOECs for steam electrolysis journal November 2016
CO 2 -to-CO conversion on layered perovskite with in situ exsolved Co–Fe alloy nanoparticles: an active and stable cathode for solid oxide electrolysis cells journal January 2016
Exsolved Fe–Ni nano-particles from Sr 2 Fe 1.3 Ni 0.2 Mo 0.5 O 6 perovskite oxide as a cathode for solid oxide steam electrolysis cells journal January 2016
In situ exsolved Co–Fe nanoparticles on the Ruddlesden-Popper-type symmetric electrodes for intermediate temperature solid oxide fuel cells journal August 2020
Development of Solid-Oxide Fuel Cells That Operate at 500°C journal January 1999
Solid Oxide Fuel Cell Cathodes: Polarization Mechanisms and Modeling of the Electrochemical Performance journal August 2003
Impedance modelling of porous electrode structures in polymer electrolyte membrane fuel cells journal December 2019
Solid oxide cells with zirconia/ceria Bi-Layer electrolytes fabricated by reduced temperature firing journal January 2015
Advanced impedance model for double-layered solid oxide fuel cell cermet anodes journal March 2019
Microstructural Degradation of Ni/YSZ Electrodes in Solid Oxide Electrolysis Cells under High Current journal January 2013
Evaluation and Modeling of the Cell Resistance in Anode-Supported Solid Oxide Fuel Cells journal January 2008