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Tabish A, Patel H, Mani A, Schoonman J, Aravind P. Effect of H2S and HCl contaminants on nickel and ceria pattern anode solid oxide fuel cells. Electrochim Acta 2022. [DOI: 10.1016/j.electacta.2022.140592] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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2
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He S, Zou Y, Chen K, Li N, Li D, Jiang SP. A critical review on nano-structured electrodes of solid oxide cells. Chem Commun (Camb) 2022; 58:10619-10626. [DOI: 10.1039/d2cc03877c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Renewable energies from solar and wind power are playing an ever increasing role in meeting the tremendous global energy demand with substantially reduced carbon emissions, however, their intermittent nature poses...
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3
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Sapountzi FM, Zhao C, Boréave A, Retailleau-Mevel L, Niakolas D, Neofytidis C, Vernoux P. Sulphur tolerance of Au-modified Ni/GDC during catalytic methane steam reforming. Catal Sci Technol 2018. [DOI: 10.1039/c8cy00107c] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Au doping and high calcination temperatures improve the sulphur tolerance of Ni/GDC, a potential SOFC anode.
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Affiliation(s)
- F. M. Sapountzi
- Université de Lyon
- Institut de Recherches sur la Catalyse et l'Environnement de Lyon
- UMR 5256
- CNRS
- Université Claude Bernard Lyon 1
| | - C. Zhao
- Université de Lyon
- Institut de Recherches sur la Catalyse et l'Environnement de Lyon
- UMR 5256
- CNRS
- Université Claude Bernard Lyon 1
| | - A. Boréave
- Université de Lyon
- Institut de Recherches sur la Catalyse et l'Environnement de Lyon
- UMR 5256
- CNRS
- Université Claude Bernard Lyon 1
| | - L. Retailleau-Mevel
- Université de Lyon
- Institut de Recherches sur la Catalyse et l'Environnement de Lyon
- UMR 5256
- CNRS
- Université Claude Bernard Lyon 1
| | - D. Niakolas
- Foundation for Research and Technology
- Institute of Chemical Engineering Sciences (FORTH/ICE-HT)
- Rion Patras
- Greece
| | - C. Neofytidis
- Foundation for Research and Technology
- Institute of Chemical Engineering Sciences (FORTH/ICE-HT)
- Rion Patras
- Greece
| | - P. Vernoux
- Université de Lyon
- Institut de Recherches sur la Catalyse et l'Environnement de Lyon
- UMR 5256
- CNRS
- Université Claude Bernard Lyon 1
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4
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Wang C, Tomov RI, Mitchell-Williams TB, Kumar RV, Glowacki BA. Inkjet printing infiltration of Ni-Gd:CeO 2 anodes for low temperature solid oxide fuel cells. J APPL ELECTROCHEM 2017; 47:1227-1238. [PMID: 32009668 PMCID: PMC6961478 DOI: 10.1007/s10800-017-1114-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2017] [Accepted: 08/08/2017] [Indexed: 10/31/2022]
Abstract
ABSTRACT The effect of inkjet printing infiltration of Gd0.1Ce0.9O2-x in NiO-Gd0.1Ce0.9O2-x anodes on the performance of symmetrical and button cells was investigated. The anodes were fabricated by inkjet printing of suspension and sol inks. Symmetrical cells were produced from composite suspension inks on Gd0.1Ce0.9O2-x electrolyte. As-prepared scaffolds were infiltrated with Gd0.1Ce0.9O2 ink. Increasing the number of infiltration steps led to formation of "nano-decoration" on pre-sintered anodes. High resolution SEM analysis was employed for micro-structural characterization revealing formation of fine anode sub-structure with nanoparticle size varying in the range of 50-200 nm. EIS tests were conducted on symmetrical cells in 4% hydrogen/argon gas flow. The measurements showed substantial reduction of the activation polarization as a function of the number of infiltrations. The effect was assigned to the extension of the triple phase boundary. The i-V testing of a reference (NiO-8 mol% Y2O3 stabilized ZrO2/NiO-Gd0.1Ce0.9O2-x /Gd0.1Ce0.9O2-x /Gd0.1Ce0.9O2-x -La0.6Sr0.4Co0.2Fe0.8O3-δ ) cell and an identical cell with infiltrated anode revealed ~2.5 times improvement in the maximum output power at 600 °C which corresponded with the reduction of the polarization resistance of the symmetrical cells at the same temperature (2.8 times). This study demonstrated the potential of inkjet printing technology as an infiltration tool for cost effective commercial SOFC processing. GRAPHICAL ABSTRACT
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Affiliation(s)
- C. Wang
- Department of Materials Science and Metallurgy, University of Cambridge, 27 Charles Babbage Road, Cambridge, CB3 0FS UK
| | - R. I. Tomov
- Department of Materials Science and Metallurgy, University of Cambridge, 27 Charles Babbage Road, Cambridge, CB3 0FS UK
| | - T. B. Mitchell-Williams
- Department of Materials Science and Metallurgy, University of Cambridge, 27 Charles Babbage Road, Cambridge, CB3 0FS UK
| | - R. V. Kumar
- Department of Materials Science and Metallurgy, University of Cambridge, 27 Charles Babbage Road, Cambridge, CB3 0FS UK
| | - B. A. Glowacki
- Department of Materials Science and Metallurgy, University of Cambridge, 27 Charles Babbage Road, Cambridge, CB3 0FS UK
- Institute of Power Engineering, Warsaw, Poland
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Mitchell-Williams TB, Tomov RI, Saadabadi SA, Krauz M, Aravind PV, Glowacki BA, Kumar RV. Infiltration of commercially available, anode supported SOFC's via inkjet printing. MATERIALS FOR RENEWABLE AND SUSTAINABLE ENERGY 2017; 6:12. [PMID: 32055434 PMCID: PMC6991986 DOI: 10.1007/s40243-017-0096-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/03/2017] [Accepted: 05/10/2017] [Indexed: 06/10/2023]
Abstract
Commercially available anode supported solid oxide fuel cells (NiO-8YSZ/8YSZ/LSCF- 20 mm in diameter) were anode infiltrated with gadolinium doped ceria (CGO) using a scalable drop-on-demand inkjet printing process. Cells were infiltrated with two different precursor solutions-water based or propionic acid based. The saturation limit of the 0.5 μm thick anode supports sintered at 1400 °C was found to be approximately 1wt%. No significant enhancement in power output was recorded at practical voltage levels. Microstructural characterisation was carried out after electrochemical performance testing using high resolution scanning electron microscopy. This work demonstrates that despite the feasibility of achieving CGO nanoparticle infiltration into thick, commercial SOFC anodes with a simple, low-cost and industrially scalable procedure other loss mechanisms were dominant. Infiltration of model symmetric anode cells with the propionic acid based ink demonstrated that significant reductions in polarisation resistance were possible.
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Affiliation(s)
- T. B. Mitchell-Williams
- Department of Materials Science and Metallurgy, University of Cambridge, Cambridge, United Kingdom
| | - R. I. Tomov
- Department of Materials Science and Metallurgy, University of Cambridge, Cambridge, United Kingdom
| | - S. A. Saadabadi
- Process and Energy Department, TU Delft, Delft, The Netherlands
| | - M. Krauz
- Ceramic Department CEREL, Institute of Power Engineering, Boguchwała, Poland
| | - P. V. Aravind
- Process and Energy Department, TU Delft, Delft, The Netherlands
| | - B. A. Glowacki
- Department of Materials Science and Metallurgy, University of Cambridge, Cambridge, United Kingdom
- Institute of Power Engineering, 02-981 Warsaw, Poland
- Bernal Institute, University of Limerick, Limerick, Ireland
| | - R. V. Kumar
- Department of Materials Science and Metallurgy, University of Cambridge, Cambridge, United Kingdom
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6
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Du X, Yang Y, Yi C, Chen Y, Cai C, Zhang Z. Preparation of AAO-CeO 2 nanotubes and their application in electrochemical oxidation desulfurization of diesel. NANOTECHNOLOGY 2017; 28:065708. [PMID: 28067206 DOI: 10.1088/1361-6528/aa5271] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The coaxial arrays of AAO-CeO2 NTs have been successfully galvanostatically deposited on an anode, characterized and adopted as a catalyst for removing organic sulfurs from diesel. The influence of the main electrochemical oxidation factors on the efficiency of desulfurization have also been investigated. The results show that the fabrication process of AAO-CeO2 NTs is accompanied by the formation of a new phase, namely Al3Ce, and the main oxidation products of the diesel are soluble inorganic sulphides, especially Ce2(SO4)3. When compared with dibenzothiophene and 4, 6-dimethyldibenzothiophene, benzothiophene is much more easily removed, with a removal efficiency that reaches 87.2%. Finally, a possible electrochemical oxidation desulfurization pathway for diesel is proposed.
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Affiliation(s)
- Xiaoqing Du
- Department of Chemistry, Zhejiang University, Hangzhou, Zhejiang, 310027, People's Republic of China
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7
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Boldrin P, Ruiz-Trejo E, Mermelstein J, Bermúdez Menéndez JM, Ramı Rez Reina T, Brandon NP. Strategies for Carbon and Sulfur Tolerant Solid Oxide Fuel Cell Materials, Incorporating Lessons from Heterogeneous Catalysis. Chem Rev 2016; 116:13633-13684. [PMID: 27933769 DOI: 10.1021/acs.chemrev.6b00284] [Citation(s) in RCA: 65] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Solid oxide fuel cells (SOFCs) are a rapidly emerging energy technology for a low carbon world, providing high efficiency, potential to use carbonaceous fuels, and compatibility with carbon capture and storage. However, current state-of-the-art materials have low tolerance to sulfur, a common contaminant of many fuels, and are vulnerable to deactivation due to carbon deposition when using carbon-containing compounds. In this review, we first study the theoretical basis behind carbon and sulfur poisoning, before examining the strategies toward carbon and sulfur tolerance used so far in the SOFC literature. We then study the more extensive relevant heterogeneous catalysis literature for strategies and materials which could be incorporated into carbon and sulfur tolerant fuel cells.
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Affiliation(s)
- Paul Boldrin
- Department of Earth Science and Engineering, Imperial College London , London SW7 2AZ, United Kingdom
| | - Enrique Ruiz-Trejo
- Department of Earth Science and Engineering, Imperial College London , London SW7 2AZ, United Kingdom
| | - Joshua Mermelstein
- The Boeing Company , 5301 Bolsa Ave., Huntington Beach, CA 92647, United States
| | | | - Tomás Ramı Rez Reina
- Department of Chemical and Process Engineering, University of Surrey , Guildford GU2 7XH, United Kingdom
| | - Nigel P Brandon
- Department of Earth Science and Engineering, Imperial College London , London SW7 2AZ, United Kingdom
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8
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9
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Montini T, Melchionna M, Monai M, Fornasiero P. Fundamentals and Catalytic Applications of CeO2-Based Materials. Chem Rev 2016; 116:5987-6041. [DOI: 10.1021/acs.chemrev.5b00603] [Citation(s) in RCA: 1484] [Impact Index Per Article: 185.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Tiziano Montini
- Department of Chemical and
Pharmaceutical Sciences, University of Trieste and ICCOM-CNR and INSTM Trieste Research Units Via L. Giorgieri 1, 34127 Trieste, Italy
| | - Michele Melchionna
- Department of Chemical and
Pharmaceutical Sciences, University of Trieste and ICCOM-CNR and INSTM Trieste Research Units Via L. Giorgieri 1, 34127 Trieste, Italy
| | - Matteo Monai
- Department of Chemical and
Pharmaceutical Sciences, University of Trieste and ICCOM-CNR and INSTM Trieste Research Units Via L. Giorgieri 1, 34127 Trieste, Italy
| | - Paolo Fornasiero
- Department of Chemical and
Pharmaceutical Sciences, University of Trieste and ICCOM-CNR and INSTM Trieste Research Units Via L. Giorgieri 1, 34127 Trieste, Italy
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10
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Li M, Hua B, Luo JL, Jiang SP, Pu J, Chi B, Li J. Enhancing Sulfur Tolerance of Ni-Based Cermet Anodes of Solid Oxide Fuel Cells by Ytterbium-Doped Barium Cerate Infiltration. ACS APPLIED MATERIALS & INTERFACES 2016; 8:10293-10301. [PMID: 27052726 DOI: 10.1021/acsami.6b00925] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Conventional anode materials for solid oxide fuel cells (SOFCs) are Ni-based cermets, which are highly susceptible to deactivation by contaminants in hydrocarbon fuels. Hydrogen sulfide is one of the commonly existed contaminants in readily available natural gas and gasification product gases of pyrolysis of biomasses. Development of sulfur tolerant anode materials is thus one of the critical challenges for commercial viability and practical application of SOFC technologies. Here we report a viable approach to enhance substantially the sulfur poisoning resistance of a Ni-gadolinia-doped ceria (Ni-GDC) anode through impregnation of proton conducting perovskite BaCe0.9Yb0.1O3-δ (BCYb). The impregnation of BCYb nanoparticles improves the electrochemical performance of the Ni-GDC anode in both H2 and H2S containing fuels. Moreover, more importantly, the enhanced stability is observed in 500 ppm of H2S/H2. The SEM and XPS analysis indicate that the infiltrated BCYb fine particles inhibit the adsorption of sulfur and facilitate sulfur removal from active sites, thus preventing the detrimental interaction between sulfur and Ni-GDC and the formation of cerium sulfide. The preliminary results of the cell with the BCYb+Ni-GDC anode in methane fuel containing 5000 ppm of H2S show the promising potential of the BCYb infiltration approach in the development of highly active and stable Ni-GDC-based anodes fed with hydrocarbon fuels containing a high concentration of sulfur compounds.
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Affiliation(s)
- Meng Li
- Center for Fuel Cell Innovation, State Key Laboratory for Coal Combustion, School of Materials Science and Engineering, Huazhong University of Science and Technology , Wuhan, Hubei 430074, China
- Fuels and Energy Technology Institute & Department of Chemical Engineering, Curtin University , Perth, Western Australia 6102, Australia
| | - Bin Hua
- Department of Chemical and Materials Engineering, University of Alberta , Edmonton, Alberta T6G 2G6, Canada
| | - Jing-Li Luo
- Department of Chemical and Materials Engineering, University of Alberta , Edmonton, Alberta T6G 2G6, Canada
| | - San Ping Jiang
- Fuels and Energy Technology Institute & Department of Chemical Engineering, Curtin University , Perth, Western Australia 6102, Australia
| | - Jian Pu
- Center for Fuel Cell Innovation, State Key Laboratory for Coal Combustion, School of Materials Science and Engineering, Huazhong University of Science and Technology , Wuhan, Hubei 430074, China
| | - Bo Chi
- Center for Fuel Cell Innovation, State Key Laboratory for Coal Combustion, School of Materials Science and Engineering, Huazhong University of Science and Technology , Wuhan, Hubei 430074, China
| | - Jian Li
- Center for Fuel Cell Innovation, State Key Laboratory for Coal Combustion, School of Materials Science and Engineering, Huazhong University of Science and Technology , Wuhan, Hubei 430074, China
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11
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Lim DH, Kim HS, Yoon SP, Han J, Yoon CW, Choi SH, Nam SW, Ham HC. Mechanisms of enhanced sulfur tolerance on samarium (Sm)-doped cerium oxide (CeO2) from first principles. Phys Chem Chem Phys 2015; 16:10727-33. [PMID: 24756238 DOI: 10.1039/c4cp00777h] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The role of samarium (Sm) 4f states and Sm-perturbed O 2p states in determining the sulfur tolerance of Sm-doped CeO2 was elucidated by using the density functional theory (DFT) + U calculation. We find that the sulfur tolerance of Sm-doped CeO2 is closely related to the modification of O 2p states by the strong interaction between Sm 4f and O 2p states. In particular, the availability of unoccupied O 2p states near the Fermi level is responsible for enhancing the sulfur tolerance of Sm-doped CeO2 compared to the pure CeO2 by increasing the activity of the surface lattice oxygen toward sulfur adsorption, by weakening the interaction between Sm-O, and by increasing the migration tendency of the subsurface oxygen ion toward the surface.
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Affiliation(s)
- Dong-Hee Lim
- Fuel Cell Research Center, Korea Institute of Science and Technology (KIST), Hwarangno 14-gil 5, Seongbuk-gu, Seoul 136-791, Republic of Korea.
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12
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Wang F, Wang W, Qu J, Zhong Y, Tade MO, Shao Z. Enhanced sulfur tolerance of nickel-based anodes for oxygen-ion conducting solid oxide fuel cells by incorporating a secondary water storing phase. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2014; 48:12427-12434. [PMID: 25229807 DOI: 10.1021/es503603w] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
In this work, a Ni+BaZr(0.4)Ce(0.4)Y(0.2)O(3-δ) (Ni+BZCY) anode with high water storage capability is used to increase the sulfur tolerance of nickel electrocatalysts for solid oxide fuel cells (SOFCs) with an oxygen-ion conducting Sm(0.2)Ce(0.8)O(1.9) (SDC) electrolyte. Attractive power outputs are still obtained for the cell with a Ni+BZCY anode that operates on hydrogen fuels containing 100-1000 ppm of H2S, while for a similar cell with a Ni+SDC anode, it displays a much reduced performance by introducing only 100 ppm of H2S into hydrogen. Operating on a hydrogen fuel containing 100 ppm of H2S at 600 °C and a fixed current density of 200 mA cm(-2), a stable power output of 148 mW cm(-2) is well maintained for a cell with a Ni+BZCY anode within a test period of 700 min, while it was decreased from an initial value of 137 mW cm(-2) to only 81 mW cm(-2) for a similar cell with a Ni+SDC anode after a test period of only 150 min. After the stability test, a loss of the Ni percolating network and reaction between nickel and sulfur appeared over the Ni+SDC anode, but it is not observed for the Ni+BZCY anode. This result highly promises the use of water-storing BZCY as an anode component to improve sulfur tolerance for SOFCs with an oxygen-ion conducting SDC electrolyte.
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Affiliation(s)
- Feng Wang
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemistry and Chemical Engineering, Nanjing Tech University , No. 5 Xin Mofan Road, Nanjing 210009, China
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13
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Ebbesen SD, Jensen SH, Hauch A, Mogensen MB. High Temperature Electrolysis in Alkaline Cells, Solid Proton Conducting Cells, and Solid Oxide Cells. Chem Rev 2014; 114:10697-734. [DOI: 10.1021/cr5000865] [Citation(s) in RCA: 359] [Impact Index Per Article: 35.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Sune Dalgaard Ebbesen
- Department of Energy Conversion and Storage, Technical University of Denmark, Risø Campus, Frederiksborgvej 399, P.O. Box 49, DK-4000 Roskilde, Denmark
| | - Søren Højgaard Jensen
- Department of Energy Conversion and Storage, Technical University of Denmark, Risø Campus, Frederiksborgvej 399, P.O. Box 49, DK-4000 Roskilde, Denmark
| | - Anne Hauch
- Department of Energy Conversion and Storage, Technical University of Denmark, Risø Campus, Frederiksborgvej 399, P.O. Box 49, DK-4000 Roskilde, Denmark
| | - Mogens Bjerg Mogensen
- Department of Energy Conversion and Storage, Technical University of Denmark, Risø Campus, Frederiksborgvej 399, P.O. Box 49, DK-4000 Roskilde, Denmark
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14
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Wu CC, Tang L, De Guire MR. Nanocrystalline ceria coatings on solid oxide fuel cell anodes: the role of organic surfactant pretreatments on coating microstructures and sulfur tolerance. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2014; 5:1712-1724. [PMID: 25383282 PMCID: PMC4222441 DOI: 10.3762/bjnano.5.181] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/31/2014] [Accepted: 09/12/2014] [Indexed: 06/04/2023]
Abstract
Treatments with organic surfactants, followed by the deposition of nanocrystalline ceria coatings from aqueous solution, were applied to anodes of solid oxide fuel cells. The cells were then operated in hydrogen/nitrogen fuel streams with H2S contents ranging from 0 to 500 ppm. Two surfactant treatments were studied: immersion in dodecanethiol, and a multi-step conversion of a siloxy-anchored alkyl bromide to a sulfonate functionality. The ceria coatings deposited after the thiol pretreatment, and on anodes with no pretreatment, were continuous and uniform, with thicknesses of 60-170 nm and 100-140 nm, respectively, and those cells exhibited better lifetime performance and sulfur tolerance compared to cells with untreated anodes and anodes with ceria coatings deposited after the sulfonate pretreatment. Possible explanations for the effects of the treatments on the structure of the coatings, and for the effects of the coatings on the performance of the cells, are discussed.
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Affiliation(s)
- Chieh-Chun Wu
- Department of Materials Science and Engineering, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, Ohio, 44106-7204, USA
| | - Ling Tang
- Department of Materials Science and Engineering, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, Ohio, 44106-7204, USA
| | - Mark R De Guire
- Department of Materials Science and Engineering, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, Ohio, 44106-7204, USA
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15
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Postole G, Bosselet F, Bergeret G, Prakash S, Gélin P. On the promoting effect of H2S on the catalytic H2 production over Gd-doped ceria from CH4/H2O mixtures for solid oxide fuel cell applications. J Catal 2014. [DOI: 10.1016/j.jcat.2014.05.011] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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16
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Deleebeeck L, Shishkin M, Addo P, Paulson S, Molero H, Ziegler T, Birss V. Activation of H2 oxidation at sulphur-exposed Ni surfaces under low temperature SOFC conditions. Phys Chem Chem Phys 2014; 16:9383-93. [DOI: 10.1039/c3cp53377h] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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17
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Lee JP, Chen D, Li X, Yoo S, Bottomley LA, El-Sayed MA, Park S, Liu M. Well-organized raspberry-like Ag@Cu bimetal nanoparticles for highly reliable and reproducible surface-enhanced Raman scattering. NANOSCALE 2013; 5:11620-11624. [PMID: 24126702 DOI: 10.1039/c3nr03363e] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Surface-enhanced Raman scattering (SERS) is ideally suited for probing and mapping surface species and incipient phases on fuel cell electrodes because of its high sensitivity and surface-selectivity, potentially offering insights into the mechanisms of chemical and energy transformation processes. In particular, bimetal nanostructures of coinage metals (Au, Ag, and Cu) have attracted much attention as SERS-active agents due to their distinctive electromagnetic field enhancements originated from surface plasmon resonance. Here we report excellent SERS-active, raspberry-like nanostructures composed of a silver (Ag) nanoparticle core decorated with smaller copper (Cu) nanoparticles, which displayed enhanced and broadened UV-Vis absorption spectra. These unique Ag@Cu raspberry nanostructures enable us to use blue, green, and red light as the excitation laser source for surface-enhanced Raman spectroscopy (SERS) with a large enhancement factor (EF). A highly reliable SERS effect was demonstrated using Rhodamine 6G (R6G) molecules and a thin film of gadolinium doped ceria.
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Affiliation(s)
- Jung-Pil Lee
- School of Materials Science and Engineering, Center for Innovative Fuel Cell and Battery Technologies, Georgia Institute of Technology, 771 Ferst Drive, Atlanta, Georgia 30332-0245, USA.
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18
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Wang W, Su C, Wu Y, Ran R, Shao Z. Progress in solid oxide fuel cells with nickel-based anodes operating on methane and related fuels. Chem Rev 2013; 113:8104-51. [PMID: 23902155 DOI: 10.1021/cr300491e] [Citation(s) in RCA: 108] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Wei Wang
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemistry & Chemical Engineering, Nanjing University of Technology , No. 5 Xin Mofan Road, Nanjing 210009, People's Republic of China
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Chen K, Ai N, Lievens C, Love J, Jiang SP. Impact of volatile boron species on the microstructure and performance of nano-structured (Gd,Ce)O2 infiltrated (La,Sr)MnO3 cathodes of solid oxide fuel cells. Electrochem commun 2012. [DOI: 10.1016/j.elecom.2012.07.025] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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20
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Li X, Blinn K, Fang Y, Liu M, Mahmoud MA, Cheng S, Bottomley LA, El-Sayed M, Liu M. Application of surface enhanced Raman spectroscopy to the study of SOFC electrode surfaces. Phys Chem Chem Phys 2012; 14:5919-23. [DOI: 10.1039/c2cp40091j] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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21
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Chueh WC, Hao Y, Jung W, Haile SM. High electrochemical activity of the oxide phase in model ceria-Pt and ceria-Ni composite anodes. NATURE MATERIALS 2011; 11:155-161. [PMID: 22138788 DOI: 10.1038/nmat3184] [Citation(s) in RCA: 96] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2011] [Accepted: 10/26/2011] [Indexed: 05/31/2023]
Abstract
Fuel cells, and in particular solid-oxide fuel cells (SOFCs), enable high-efficiency conversion of chemical fuels into useful electrical energy and, as such, are expected to play a major role in a sustainable-energy future. A key step in the fuel-cell energy-conversion process is the electro-oxidation of the fuel at the anode. There has been increasing evidence in recent years that the presence of CeO(2)-based oxides (ceria) in the anodes of SOFCs with oxygen-ion-conducting electrolytes significantly lowers the activation overpotential for hydrogen oxidation. Most of these studies, however, employ porous, composite electrode structures with ill-defined geometry and uncontrolled interfacial properties. Accordingly, the means by which electrocatalysis is enhanced has remained unclear. Here we demonstrate unambiguously, through the use of ceria-metal structures with well-defined geometries and interfaces, that the near-equilibrium H(2) oxidation reaction pathway is dominated by electrocatalysis at the oxide/gas interface with minimal contributions from the oxide/metal/gas triple-phase boundaries, even for structures with reaction-site densities approaching those of commercial SOFCs. This insight points towards ceria nanostructuring as a route to enhanced activity, rather than the traditional paradigm of metal-catalyst nanostructuring.
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Affiliation(s)
- William C Chueh
- Materials Science, California Institute of Technology, Pasadena, California 91125, USA
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Affiliation(s)
| | - J.M. Vohs
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104; ,
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Ge X, Zhang L, Fang Y, Zeng J, Chan SH. Robust solid oxide cells for alternate power generation and carbon conversion. RSC Adv 2011. [DOI: 10.1039/c1ra00355k] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Laycock CJ, Staniforth JZ, Ormerod RM. Biogas as a fuel for solid oxide fuel cells and synthesis gas production: effects of ceria-doping and hydrogen sulfide on the performance of nickel-based anode materials. Dalton Trans 2011; 40:5494-504. [DOI: 10.1039/c0dt01373k] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Abstract
AbstractIn recent years extended focus has been placed on monitoring and understanding degradation mechanisms in both solid oxide fuel cells and solid oxide electrolysis cells. The time-consuming nature of degradation experiments and the disparate conclusions from experiment reproductions indicates that not all degradation mechanisms are fully understood. Traditionally, cell degradation has been attributed to the materials, processing and cell operating conditions. More recently, focus has been placed on the effect of raw material and gas impurities and their long-term effect on cell degradation. Minor impurities have been found to play a significant role in degradation and in some cases can overshadow the cell operation condition related degradation phenomenon. In this review, several degradation diagnostic tools are discussed, a benchmark for a desirable degradation rate is proposed and degradation behaviour and mechanisms are discussed. For ease of navigation, the review is separated into the various cell components – fuel electrode, electrolyte and oxygen electrode. Finally, nano-particle impregnate stability is discussed.
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Pomfret MB, Owrutsky JC, Walker RA. In situ optical studies of solid-oxide fuel cells. ANNUAL REVIEW OF ANALYTICAL CHEMISTRY (PALO ALTO, CALIF.) 2010; 3:151-174. [PMID: 20636038 DOI: 10.1146/annurev.anchem.111808.073641] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Thermal imaging and vibrational spectroscopy have become important tools for examining the physical and chemical changes that occur in real time in solid-oxide fuel cells (SOFCs). Imaging techniques can resolve temperature differences as fine as 0.1 degrees C across a SOFC electrode at temperatures higher than 600 degrees C. Vibrational spectroscopy can identify molecular species and changes in material phases in operating SOFCs. This review discusses the benefits and challenges associated with directly observing processes that are important to SOFC performance and durability. In situ optical methods can provide direct insight into reaction mechanisms that can be inferred only indirectly from electrochemical measurements such as voltammetry and electrochemical impedance spectroscopy and from kinetic models and postmortem, ex situ examinations of SOFC components. Particular attention is devoted to recent advances that, hopefully, will spur the development of new generations of efficient, versatile energy-producing devices.
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Affiliation(s)
- Michael B Pomfret
- Chemistry Division, Naval Research Laboratory, Washington, District of Columbia 20375, USA
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A Cu–CeO[sub 2]-LDC Composite Anode for LSGM Electrolyte-Supported Solid Oxide Fuel Cells. ACTA ACUST UNITED AC 2009. [DOI: 10.1149/1.3117213] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Tsipis EV, Kharton VV. Electrode materials and reaction mechanisms in solid oxide fuel cells: a brief review. J Solid State Electrochem 2008. [DOI: 10.1007/s10008-008-0611-6] [Citation(s) in RCA: 348] [Impact Index Per Article: 21.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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