| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Thangadurai, Venkataraman
University of St Andrews
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (88/88 displayed)
- 2024Probing Alkaline-Earth-Doped Garnet-Type Li7La2.75A0.25Zr1.75M0.25O12 (A = Ca, Sr, Ba; M = Nb, Ta) Electrolytes for All-Solid-State Li Metal Batteriescitations
- 2024Wet chemical method ZnF2 interlayer for high critical current density lithium metal batteries utilizing Ba and Ta-doped Li7LA3Zr2O12 garnet solid electrolyte
- 2024Wet chemical method ZnF 2 interlayer for high critical current density lithium metal batteries utilizing Ba and Ta-doped Li 7 LA 3 Zr 2 O 12 garnet solid electrolyte
- 2024Probing alkaline-earth-doped garnet-type Li 7 La 2.75 A 0.25 Zr 1.75 M 0.25 O 12 (A = Ca, Sr, Ba; M = Nb, Ta) electrolytes for all-solid-state Li metal batteriescitations
- 2023Investigating the electrochemical performance of Nd 1-x Sr x Co 0.8 Fe 0.2 O 3−δ (0 ≤ x ≤ 0.85) as cathodes for intermediate temperature solid oxide fuel cellscitations
- 2023Oxygen reduction reaction mechanism on PrSrCo 2-x Fe x O 5+d (x = 0, 1, 2) and Sm 0.2 Ce 0.8 O 1.9 composite cathodes for intermediate-temperature solid oxide fuel cellscitations
- 2023Perovskite-type Nd 0.75 Ba 0.25 Co 0.8 Fe 0.2 O 3-δ cathode for intermediate temperature solid oxide fuel cellscitations
- 2023Perovskenes:two-dimensional perovskite-type monolayer materials predicted by first-principles calculationscitations
- 2023Synergistic approach toward developing highly compatible garnet-liquid electrolyte interphase in hybrid solid-state lithium-metal batteriescitations
- 2023Solid-state electrolytes for lithium-ion batteriescitations
- 2023High ionic conducting rare-earth silicate electrolytes for sodium metal batteriescitations
- 2022Recent advances in the unconventional design of electrochemical energy storage and conversion devicescitations
- 2022Recent advances, practical challenges, and perspectives of intermediate temperature solid oxide fuel cell cathodescitations
- 2022MoS 2 -graphene composite electrode for high energy hybrid Li-ion capacitorscitations
- 2022Ultrahigh sulfur loading tolerant cathode architecture with extended cycle life for high energy density lithium–sulfur batteriescitations
- 2022Recent Advances in the Unconventional Design of Electrochemical Energy Storage and Conversion Devicescitations
- 2022Fabrication of ultra-thin, flexible, dendrite-free, robust and nanostructured solid electrolyte membranes for solid-state Li-batteriescitations
- 2021A review on perovskite-type LaFeO 3 based electrodes for CO 2 reduction in solid oxide electrolysis cells:current understanding of structure-functional property relationshipscitations
- 2021Ligand-engineered metal-organic frameworks for electrochemical reduction of carbon dioxide to carbon monoxidecitations
- 2021Microstructural tuning of solid electrolyte Na 3 Zr 2 Si 2 PO 12 by polymer-assisted solution synthesis method and its effect on ionic conductivity and dielectric propertiescitations
- 2021Water-splitting photoelectrodes consisting of heterojunctions of carbon nitride with a p-type low bandgap double perovskite oxidecitations
- 2021Synthesis and characterization of calcium double perovskites for the potential application of semiconducting CO 2 sensorscitations
- 2021Garnet-based solid-state Li batteries:From materials design to battery architecturecitations
- 2020LiF modified stable flexible PVDF-garnet hybrid electrolyte for high performance all-solid-state Li–S batteriescitations
- 2020The activation entropy for ionic conduction and critical current density for Li charge transfer in novel garnet-type Li 6.5 La 2.9 A 0.1 Zr 1.4 Ta 0.6 O 12 (A = Ca, Sr, Ba) solid electrolytescitations
- 2020Effect of Mn and Ni-doping on structure, photoluminescence and magnetic properties of perovskite-type BaSn 0.99 Gd 0.01 O 3citations
- 2020Editors' Choice - Review - Solid-State Electrochemical Carbon Dioxide Sensors:Fundamentals, Materials and Applicationscitations
- 2020Studies on effect of Ca-doping on structure and electrochemical properties of garnet-type Y 3-x Ca x Fe 5 O 12-δcitations
- 2020Particle size dependence of proton conduction in a cationic lanthanum phosphonate MOFcitations
- 2020Morphological, dielectric and transport properties of garnet-type Li 6.25+y Al 0.25 La 3 Zr 2-y Mn y O 12 (y = 0, 0.05, 0.1, and 0.2)citations
- 2020Investigating the effect of Cu-doping on the electrochemical properties of perovskite-type Ba 0.5 Sr 0.5 Fe 1-x Cu x O 3-δ (0 ≤ x ≤ 0.20) cathodescitations
- 2019Fabrication of a Dendrite-Free all Solid-State Li Metal Battery via Polymer Composite/Garnet/Polymer Composite Layered Electrolytecitations
- 2019Perspective of perovskite-type oxides for proton conducting solid oxide fuel cellscitations
- 2019Microstructural and Electrochemical Properties of Alkaline Earth Metal-Doped Li Garnet-Type Solid Electrolytes Prepared by Solid-State Sintering and Spark Plasma Sintering Methodscitations
- 2019Electrical Properties of Hollandite-Type Ba1.33Ga2.67Ti5.33O16, K1.33Ga1.33Ti6.67O16, and K1.54Mg0.77Ti7.23O16citations
- 2019A bird's-eye view of Li-stuffed garnet-type Li 7 La 3 Zr 2 O 12 ceramic electrolytes for advanced all-solid-state Li batteriescitations
- 2019Investigating Phase and Electrical Properties of Calcium-Doped Yttrium Iron Garnet
- 2019Electrochemical studies of Ruddlesden-Popper layered perovskite-type La 0.6 Sr 1.4 Co 0.2 Fe 0.8 O 4+δ cathode for solid oxide fuel cells and associated electrical loss phenomenacitations
- 2018Towards mixed ionic and electronic conducting Li-stuffed garnetscitations
- 2018High performance tubular solid oxide fuel cell based on Ba 0.5 Sr 0.5 Ce 0.6 Zr 0.2 Gd 0.1 Y 0.1 O 3-δ proton conducting electrolytecitations
- 2018Amine-Functionalized Al-MOF#at y x Sm 2 O 3 ZnO:A Visible Light-Driven Nanocomposite with Excellent Photocatalytic Activity for the Photo-Degradation of Amoxicillincitations
- 2017Formulation of a Statistical Mechanical Theory to Understand the Li Ion Conduction in Crystalline Electrolytes:A Case Study on Li-Stuffed Garnetscitations
- 2016Grain Boundary Space Charge Effect and Proton Dynamics in Chemically Stable Perovskite-Type Ba 0.5 Sr 0.5 Ce 0.6 Zr 0.2 Gd 0.1 Y 0.1 O 3-δ (BSCZGY):A Case Study on Effect of Sintering Temperaturecitations
- 2016Profound Understanding of Effect of Transition Metal Dopant, Sintering Temperature, and pO 2 on the Electrical and Optical Properties of Proton Conducting BaCe 0.9 Sm 0.1 O 3-δcitations
- 2016(Invited) Multi-Element-Doped Ceria-Based Metal Oxides for Advanced Proton Conducting SOFCs
- 2016Electrochemical studies of Gd 0.5 Pr 0.5 BaCo 2 O 5 + δ (GPBC) cathode for oxide ion and proton conducting solid oxide fuel cellscitations
- 2016Semiconducting SnO 2 -TiO 2 (S-T) composites for detection of SO 2 gascitations
- 2016Trends in electrode development for next generation solid oxide fuel cellscitations
- 2016Evaluation of MIEC Ce 0.8 Y 0.1 Mn 0.1 O 2-δ Anode in Electrolyte-Supported SOFCcitations
- 2016Synthesis and characterisation of ceramic proton conducting perovskite-type multi-element-doped Ba 0.5 Sr 0.5 Ce 1−x−y−z Zr x Gd y Y z O 3−δ (0 < x < 0.5; y = 0, 0.1, 0.15; z = 0.1, 0.2)citations
- 2016Probing surface valence, magnetic property, and oxide ion diffusion pathway in B-site ordered perovskite-type Ba 2 Ca 0.67 M 0.33 NbO 6 - δ (M=Mn, Fe, Co)citations
- 2015Effect of excess Li on the structural and electrical properties of garnet-type Li 6 La 3 Ta 1.5 Y 0.5 O 12citations
- 2015Magnetically Aligned Iron Oxide/Gold Nanoparticle-Decorated Carbon Nanotube Hybrid Structure as a Humidity Sensorcitations
- 2015Effect of V-doping on the structure and conductivity of garnet-type Li 5 La 3 Nb 2 O 12citations
- 2014Effect of sintering temperature on microstructure, chemical stability, and electrical properties of transition metal or Yb-doped BaZr 0.1 Ce 0.7 Y 0.1 M 0.1 O 3-δ (M = Fe, Ni, Co, and Yb)citations
- 2014Studies on polymorphic sequence during the formation of the 1:1 ordered perovskite-type BaCa 0.335 M 0.165 Nb 0.5 O 3-δ (M = Mn, Fe, Co) using in situ and ex situ powder X-ray diffractioncitations
- 2014Electrochemical characterization of multi-element-doped ceria as potential anodes for SOFCscitations
- 2014Chemical reactivity between Ce 0.7 RE 0.2 Mo 0.1 O 2 (RE = Y, Sm) and 8YSZ, and conductivity studies of their solid solutionscitations
- 2013Electrical properties of ionic liquid and double perovskite-type metal oxide composites - A new method to tailor grain-boundary impedance of ceramic electrolytescitations
- 2013Detecting CO 2 at ppm level in synthetic air using mixed conducting double perovskite-type metal oxidescitations
- 2013Highly Li-Stuffed Garnet-Type Li 7+x La 3 Zr 2-x Y x O 12citations
- 2013Amphoteric oxide semiconductors for energy conversion devices:A tutorial reviewcitations
- 2013Effect of substitution of B-sites by Mn, Fe and Co in double perovskite-type Ba 3 CaNb 2 O 9 on structure and electrical propertiescitations
- 2013Synthesis and characterization of perovskite-type BaMg 0.33 Nb 0.67-x Fe x O 3-δ for potential high temperature CO 2 sensors applicationcitations
- 2013Growth of crystalline tungsten carbides using 1,1,3,3-tetramethyl-1,3- disilacyclobutane on a heated tungsten filamentcitations
- 2011Soft-chemistry of garnet-type Li 5+ x Ba x La 3-x Nb 2 O 12 (x = 0, 0.5, 1):Reversible H + ↔ Li + ion-exchange reaction and their X-ray, 7 Li MAS NMR, IR, and AC impedance spectroscopy characterizationcitations
- 2011Investigations on the thermo-chemical stability and electrical conductivity of K-doped Ba 3 - X K x CaNb 2 O 9 - δ (x = 0.5, 0.75, 1, 1.25)citations
- 2011Synthesis, rietveld refinement of crystal structure, electron diffraction, and electrical transport properties of Ba 2 (Ca 1- x - Y Fe x Nb y )(Nb 1- z Fe z )O 6-δ double perovskitescitations
- 2011Perovskite-type metal oxides exhibiting negligible grain boundary resistance to total electrical conductivitycitations
- 2011Dielectric properties of Ba 3-x K x CaNb 2 O 9-δ (0.5 < x < 1.25) (KBCN) double perovskites
- 2011Effect of y substitution for Nb in Li 5 La 3 Nb 2 O 12 on Li ion conductivity of garnet-type solid electrolytescitations
- 2011Electrical conductivity and chemical stability of perovskite-type BaCe 0.8-x Ti x Y 0.2 O 3-δcitations
- 2010In-situ powder X-ray diffraction investigation of reaction pathways for the BaCO 3 -CeO 2 -In 2 O 3 and CeO 2 -In 2 O 3 systemscitations
- 2010Effect of Ti substitution for Nb in double perovskite-type Ba 3 CaNb 2 O 9 on chemical stability and electrical conductivitycitations
- 2010Studies on chemical stability and electrical properties of proton conducting perovskite-like doped BaCeO 3citations
- 2010Studies on chemical stability in CO 2 and H 2 O and electrical conductivity of perovskite-type Ba 3 In 2 Zr 1-x Ce x O 8 (x = 0, 0.5, 1)citations
- 2010TEM and ED confirmation of conversion of 3D and 2D perovskite-type into fluorite-type structurecitations
- 2010Tailor-made development of fast Li ion conducting garnet-like solid electrolytescitations
- 2009Electrical transport properties of aliovalent cation-doped CeO 2citations
- 2009Electrical transport properties of In-doped Ce 1-x In x O 2-δ (x = 0.1; 0.2)citations
- 2009Facile conversion of layered ruddlesden-popper-related structure y 2 O 3 -doped Sr 2 CeO 4 into fast oxide ion-conducting fluorite-type y 2 O 3 -doped CeO 2citations
- 2009Synthesis and characterization of carbon dioxide and boiling water stable proton conducting double perovskite-type metal oxidescitations
- 2009Dielectric properties of ga-doped Na0.5K0.5NbO3citations
- 2008Transformation of proton-conducting perovskite-type into fluorite-type fast oxide ion electrolytes using a CO 2 capture technique and their electrical propertiescitations
- 2007Structure and lithium ion conductivity of bismuth containing lithium garnets Li 5 La 3 Bi 2 O 12 and Li 6 SrLa 2 Bi 2 O 12citations
- 2005Li 6 ALa 2 Nb 2 O 12 (A = Ca, Sr, Ba):A new class of fast lithium ion conductors with garnet-like structurecitations
- 2001Mixed ionic-electronic conductivity in phases in the praseodymium oxide systemcitations
- 2001Synthesis, structure, and electrical conductivity of A′[A 2 B 3 O 10 ] (A′ = Rb, Cs; A = Sr, Ba; B= Nb, Ta):New members of Dion-Jacobson-Type layered perovskitescitations
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article
(Invited) Multi-Element-Doped Ceria-Based Metal Oxides for Advanced Proton Conducting SOFCs
Abstract
<jats:p>The ability of solid oxide fuel cells (SOFC) to convert the chemical energy of various kinds of fuels into electricity at high efficiency, and with reduced environmental impacts makes them an attractive technology for current and future plans for clean power generation. State-of-the-art yttria-stabilised ZrO<jats:sub>2</jats:sub> (YSZ) electrolyte shows high conductivity (10<jats:sup>-2 </jats:sup>S/cm) at about 1000 °C [1]. However, the high operating temperature leads to durability and cost issues and hinders its full market implementation. Operating temperature of SOFCs can be lowered by employing ceramic proton conducting electrolytes based on doped- BaCeO<jats:sub>3</jats:sub> which exhibits high proton conductivity (10<jats:sup>-2</jats:sup> S/cm) in the intermediate temperature (IT, 400-700 °C) range [2]. However, the poor chemical stability of doped-BaCeO<jats:sub>3</jats:sub> under SOFC by-products CO<jats:sub>2,</jats:sub> and H<jats:sub>2</jats:sub>O limits its use as stable electrolyte [2]. </jats:p><jats:p>Here we report, perovskite–type Ba<jats:sub>0.5</jats:sub>Sr<jats:sub>0.5</jats:sub>Ce<jats:sub>1-<jats:italic>x-y-z</jats:italic></jats:sub>Zr<jats:italic><jats:sub>x</jats:sub></jats:italic>Gd<jats:italic><jats:sub>y</jats:sub></jats:italic>Y<jats:italic><jats:sub>z</jats:sub></jats:italic>O<jats:sub>3-δ </jats:sub>as proton conductors for IT-SOFCs [3]. A-and B-site of BaCeO<jats:sub>3</jats:sub> were doped by more electronegative elements to improve its chemical stability under H<jats:sub>2</jats:sub>O and CO<jats:sub>2</jats:sub> at elevated temperature. In terms of chemical stability and conductivity, Ba<jats:sub>0.5</jats:sub>Sr<jats:sub>0.5</jats:sub>Ce<jats:sub>0.6</jats:sub>Zr<jats:sub>0.2</jats:sub>Gd<jats:sub>0.1</jats:sub>Y<jats:sub>0.1</jats:sub>O<jats:sub>3-δ </jats:sub>seems to be the optimal composition with conductivity of 10<jats:sup>-3 </jats:sup>S/cm at 700 °C in 3% H<jats:sub>2</jats:sub>O/H<jats:sub>2</jats:sub>. Open circuit voltage of 1.15 V at 700 °C for H<jats:sub>2</jats:sub>-air cell suggests pure ionic (proton) conduction in Ba<jats:sub>0.5</jats:sub>Sr<jats:sub>0.5</jats:sub>Ce<jats:sub>0.6</jats:sub>Zr<jats:sub>0.2</jats:sub>Gd<jats:sub>0.1</jats:sub>Y<jats:sub>0.1</jats:sub>O<jats:sub>3-δ</jats:sub> [3]. The effect of sintering temperature on bulk and grain boundary conductivity of these oxides was investigated using dielectric loss spectroscopy [4]. Moreover, the difference in the relaxation times in the current study suggests that short-range and long-range proton dynamics seems to be differing to previous studies on Y-doped BaZrO<jats:sub>3</jats:sub> systems [5]. Additionally, layered perovskite-type Gd<jats:sub>0.5</jats:sub>Pr<jats:sub>0.5</jats:sub>BaCo<jats:sub>2</jats:sub>O<jats:sub>5+δ</jats:sub> were characterised as cathode for H-SOFCs [6]. Symmetrical cell measurements under air and wet air gave an area specific resistance of 2.4 Ω cm<jats:sup>2</jats:sup> and 1.9 Ω cm<jats:sup>2</jats:sup> for oxygen reduction reaction at 700 °C [6]. The effect of phase purity and synthesis methods on the electrochemical performance of Ni+Ba<jats:sub>0.5</jats:sub>Sr<jats:sub>0.5</jats:sub>Ce<jats:sub>0.6</jats:sub>Zr<jats:sub>0.2</jats:sub>Gd<jats:sub>0.1</jats:sub>Y<jats:sub>0.1</jats:sub>O<jats:sub>3</jats:sub><jats:sub>-δ</jats:sub> anode composites was investigated through symmetrical cell measurements in 3% H<jats:sub>2</jats:sub>O/H<jats:sub>2. </jats:sub></jats:p><jats:p><jats:bold>References</jats:bold></jats:p><jats:p>1) J. W. Fergus, R. Hui, X. Li, D. P. Wilkinson, J. Zhang, Solid Oxide Fuel Cells: Materials Properties and Performance, CRC Press, New York (2009). </jats:p><jats:p>2) K. D. Kreuer, Annu. Rev. Mater. Res. 33 (2003) 333. </jats:p><jats:p>3) R. Kannan, K. Singh, S. Gill, T. Fürstenhaupt, V. Thangadurai, Sci. Reports. 3 (2013) 2138. </jats:p><jats:p>4) K. Singh, A. Baral, V. Thangadurai, J. Am. Ceram. Soc. 99 (2016) 866. </jats:p><jats:p>5) Y. Yamazaki, F. Blanc, Y. Okuyama, L. Buannic L, J. C. Lucio-Vega, C. P. Grey, S. M. Haile, Nat. Mater. 12 (2013) 647. </jats:p><jats:p>6) K. Singh, A. K. Baral, V. Thangadurai, Solid State Ionics (2016) DOI:10.1016/j.ssi.2015.12.010.</jats:p>