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Superior electrochemical performance and oxygen reduction kinetics of layered perovskite PrBaxCo2O5+δ (x = 0.90–1.0) oxides as cathode materials for intermediate-temperature solid oxide fuel cells
| hal.structure.identifier | Key Laboratory of Superlight Materials and Surface Technology | |
| dc.contributor.author | WANG, Jingping | |
| hal.structure.identifier | Key Laboratory of Functional Inorganic Material Chemistry [KLFIMC] | |
| dc.contributor.author | MENG, Fuchang | |
| hal.structure.identifier | Key Laboratory of Functional Inorganic Material Chemistry [KLFIMC] | |
| dc.contributor.author | XIA, Tian | |
| hal.structure.identifier | Key Laboratory of Functional Inorganic Material Chemistry [KLFIMC] | |
| dc.contributor.author | SHI, Zhan | |
| hal.structure.identifier | Key Laboratory of Functional Inorganic Material Chemistry [KLFIMC] | |
| dc.contributor.author | LIAN, Jie | |
| hal.structure.identifier | Key Laboratory of Superlight Materials and Surface Technology | |
| dc.contributor.author | XU, Chunbo | |
| hal.structure.identifier | Key Laboratory of Functional Inorganic Material Chemistry [KLFIMC] | |
| dc.contributor.author | ZHAO, Hui | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | BASSAT, Jean-Marc. | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | GRENIER, Jean-Claude | |
| dc.date.issued | 2014 | |
| dc.identifier.issn | 0360-3199 | |
| dc.description.abstractEn | The layered perovskite PrBaxCo2O5+δ (PBxCO, x = 0.90–1.0) oxides have been synthesized by a solid-state reaction technique, and evaluated as the potential cathode materials for intermediate-temperature solid oxide fuel cells (IT-SOFCs). Room temperature X-ray diffraction patterns show the orthorhombic structures which double the lattice parameters from the perovskite cell parameter as a ≈ ap, b ≈ ap and c ≈ 2ap (ap is the cell parameter of the primitive perovskite) in the Pmmm space group. There is a good chemical compatibility between the PBxCO cathode and the Ce0.9Gd0.1O1.95 (CGO) electrolyte at 1000 °C. The electrical conductivity and thermal expansion coefficient of PBxCO are improved due to the increased amount of electronic holes originated from the Ba-deficiency. The results demonstrate the high electrochemical performance of PBxCO cathodes, as evidenced by the super low polarization resistances (Rp) over the intermediate temperature range. The lowest Rp value, 0.042 Ω cm2, and the cathodic overpotential, −15 mV at a current density of −25 mA cm−2, are obtained in the PrBa0.94Co2O5+δ cathode at 600 °C in air, which thus allow to be used as a highly promising cathode for IT-SOFCs. A CGO electrolyte fuel cell with the PrBa0.94Co2O5+δ cathode presents the attractive peak power density of ∼1.0 W cm−2 at 700 °C. Furthermore, the oxygen reduction kinetics of the PrBa0.94Co2O5+δ cathode is also studied, and the rate-limiting steps for oxygen reduction reaction are determined at different temperatures. | |
| dc.language.iso | en | |
| dc.publisher | Elsevier | |
| dc.subject.en | Intermediate-temperature solid oxide fuel cell | |
| dc.subject.en | Cathode material | |
| dc.subject.en | Layered perovskite | |
| dc.subject.en | Electrochemical performance | |
| dc.subject.en | Oxygen reduction kinetics | |
| dc.title.en | Superior electrochemical performance and oxygen reduction kinetics of layered perovskite PrBaxCo2O5+δ (x = 0.90–1.0) oxides as cathode materials for intermediate-temperature solid oxide fuel cells | |
| dc.type | Article de revue | |
| dc.identifier.doi | 10.1149/2.0121414jes | |
| dc.subject.hal | Chimie/Matériaux | |
| bordeaux.journal | International Journal of Hydrogen Energy | |
| bordeaux.page | 18392-18404 | |
| bordeaux.volume | 39 | |
| bordeaux.issue | 32 | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-01080087 | |
| hal.version | 1 | |
| hal.popular | non | |
| hal.audience | Internationale | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-01080087v1 | |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=International%20Journal%20of%20Hydrogen%20Energy&rft.date=2014&rft.volume=39&rft.issue=32&rft.spage=18392-18404&rft.epage=18392-18404&rft.eissn=0360-3199&rft.issn=0360-3199&rft.au=WANG,%20Jingping&MENG,%20Fuchang&XIA,%20Tian&SHI,%20Zhan&LIAN,%20Jie&rft.genre=article |
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