Electrode properties of Cu-doped Bi0.5Sr0.5FeO3−δ cobalt-free perovskite as cathode for intermediate-temperature solid oxide fuel cells
| hal.structure.identifier | Key Laboratory of Functional Inorganic Material Chemistry [KLFIMC] | |
| dc.contributor.author | GAO, Lei | |
| hal.structure.identifier | Key Laboratory of Functional Inorganic Material Chemistry [KLFIMC] | |
| dc.contributor.author | ZHU, Mengzhao | |
| hal.structure.identifier | Key Laboratory of Functional Inorganic Material Chemistry [KLFIMC] | |
| dc.contributor.author | LI, Qiang | |
| hal.structure.identifier | Key Laboratory of Functional Inorganic Material Chemistry [KLFIMC] | |
| dc.contributor.author | SUN, Liping | |
| 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 | GRENIER, Jean-Claude | |
| dc.date.issued | 2017 | |
| dc.identifier.issn | 0925-8388 | |
| dc.description.abstractEn | A cobalt-free perovskite oxide Bi0.5Sr0.5Fe0.8Cu0.2O3−δ (BSFC) has been investigated as novel cathode for intermediate-temperature solid oxide fuel cells (IT-SOFCs). The BSFC cathode exhibits good thermal stability and chemical compatibility with Ce0.9Gd0.1O1.95 (CGO) electrolyte below 950 °C. The average thermal expansion coefficient (TEC) of BSFC is 13.1 × 10−6 K−1 within a temperature range of 50–800 °C in air, which is close to that of CGO electrolyte. Meanwhile, the polarization resistant values (RP) of BSFC cathode on CGO electrolyte are 0.13, 0.32 and 0.76 Ω cm2 at 700, 650 and 600 °C, respectively; the lowest cathode overpotential is 37 mV at a current density of 125 mA cm−2 at 700 °C in air. The CGO electrolyte-supported single cell with BSFC cathode exhibits maximum power density of 290 mW cm−2 at 700 °C using dry H2 as the fuel. The rate-limiting step for oxygen reduction reaction (ORR) on BSFC cathode is oxygen surface adsorption-dissociation process. The attractive electrochemical performance demonstrates that BSFC oxide is a promising cathode material for IT-SOFCs. | |
| dc.language.iso | en | |
| dc.publisher | Elsevier | |
| dc.subject.en | Solid oxide fuel cell | |
| dc.subject.en | Cobalt-free cathode | |
| dc.subject.en | Oxygen reduction reaction | |
| dc.subject.en | Electrochemical performance | |
| dc.title.en | Electrode properties of Cu-doped Bi0.5Sr0.5FeO3−δ cobalt-free perovskite as cathode for intermediate-temperature solid oxide fuel cells | |
| dc.type | Article de revue | |
| dc.identifier.doi | 10.1016/j.jallcom.2017.01.026 | |
| dc.subject.hal | Chimie/Matériaux | |
| bordeaux.journal | Journal of Alloys and Compounds | |
| bordeaux.page | 29-36 | |
| bordeaux.volume | 700 | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-01453333 | |
| hal.version | 1 | |
| hal.popular | non | |
| hal.audience | Internationale | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-01453333v1 | |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Journal%20of%20Alloys%20and%20Compounds&rft.date=2017&rft.volume=700&rft.spage=29-36&rft.epage=29-36&rft.eissn=0925-8388&rft.issn=0925-8388&rft.au=GAO,%20Lei&ZHU,%20Mengzhao&LI,%20Qiang&SUN,%20Liping&ZHAO,%20Hui&rft.genre=article |
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