A novel family of Nb-doped Bi0.5Sr0.5FeO3-δ perovskite as cathode material for intermediate-temperature solid oxide fuel cells
| hal.structure.identifier | Key Laboratory of Functional Inorganic Materials Chemistry of Ministry of Education | |
| dc.contributor.author | GAO, Lei | |
| hal.structure.identifier | Key Laboratory of Functional Inorganic Materials Chemistry of Ministry of Education | |
| dc.contributor.author | LI, Qiang | |
| hal.structure.identifier | Key Laboratory of Functional Inorganic Materials Chemistry of Ministry of Education | |
| dc.contributor.author | SUN, Liping | |
| hal.structure.identifier | Key Laboratory of Functional Inorganic Materials Chemistry of Ministry of Education | |
| dc.contributor.author | ZHANG, Xianfa | |
| hal.structure.identifier | Key Laboratory of Functional Inorganic Materials Chemistry of Ministry of Education | |
| dc.contributor.author | HUO, Lihua | |
| hal.structure.identifier | Key Laboratory of Functional Inorganic Materials Chemistry of Ministry of Education | |
| dc.contributor.author | ZHAO, Hui | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | GRENIER, Jean-Claude | |
| dc.date.issued | 2017-12 | |
| dc.identifier.issn | 0378-7753 | |
| dc.description.abstractEn | Cobalt-free provskite oxides Bi0.5Sr0.5Fe1−xNbxO3−δ (BSFNx, x = 0.05, 0.10 and 0.15) were prepared and evaluated as cathode materials for intermediate temperature solid oxide fuel cells (IT-SOFCs). In particular, the effects of Nb substitution on phase evolution, thermal expansion behavior and electrochemical performance were systematically investigated. The average thermal expansion coefficient (TEC) of BSFNx decreases from 13.3 × 10−6 K−1 at x = 0.05 to 12.6 × 10−6 K−1 at x = 0.15 within a temperature range of 50–800 °C. Among the BSFNx materials, Bi0.5Sr0.5Fe0.9Nb0.1O3−δ (BSFN0.10) oxide shows the best electrochemical performance. The polarization resistances (Rp) of BSFN0.10 cathode on CGO electrolyte are 0.038, 0.075 and 0.156 Ω cm2 at 700, 650 and 600 °C, respectively. Meanwhile the maximum power densities of the anode-supported single cells are 1.28, 1.54 and 1.34 W cm−2 at 700 °C for BSFNx cathodes with x = 0.05, 0.10, and 0.15, respectively. Furthermore, the relationship study of oxygen partial pressure dependence on Rp indicates that the oxygen reduction reaction (ORR) rate-limiting step is the oxygen adsorption-dissociation on the electrode surface. The desirable electrochemical performance demonstrates that BSFNx oxides are potential cathode materials for IT-SOFCs. | |
| dc.language.iso | en | |
| dc.publisher | Elsevier | |
| dc.subject.en | Cobalt-free cathode material | |
| dc.subject.en | Electrochemical performance : Oxygen reduction kinetics | |
| dc.subject.en | Solid oxide fuel cells | |
| dc.title.en | A novel family of Nb-doped Bi0.5Sr0.5FeO3-δ perovskite as cathode material for intermediate-temperature solid oxide fuel cells | |
| dc.type | Article de revue | |
| dc.identifier.doi | 10.1016/j.jpowsour.2017.10.036 | |
| dc.subject.hal | Chimie/Matériaux | |
| bordeaux.journal | Journal of Power Sources | |
| bordeaux.page | 86-95 | |
| bordeaux.volume | 371 | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-01693108 | |
| hal.version | 1 | |
| hal.popular | non | |
| hal.audience | Internationale | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-01693108v1 | |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Journal%20of%20Power%20Sources&rft.date=2017-12&rft.volume=371&rft.spage=86-95&rft.epage=86-95&rft.eissn=0378-7753&rft.issn=0378-7753&rft.au=GAO,%20Lei&LI,%20Qiang&SUN,%20Liping&ZHANG,%20Xianfa&HUO,%20Lihua&rft.genre=article |
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