Lan+1NinO3n+1 (n = 2 and 3) phases and composites for solid oxide fuel cell cathodes: Facile synthesis and electrochemical properties
| hal.structure.identifier | Laboratoire d'Electrochimie et de Physico-chimie des Matériaux et des Interfaces [LEPMI ] | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | SHARMA, Rakesh K. | |
| hal.structure.identifier | Laboratoire des matériaux et du génie physique [LMGP ] | |
| dc.contributor.author | BURRIEL, Mónica | |
| hal.structure.identifier | Laboratoire d'Electrochimie et de Physico-chimie des Matériaux et des Interfaces [LEPMI ] | |
| dc.contributor.author | DESSEMOND, Laurent | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | BASSAT, Jean-Marc. | |
| hal.structure.identifier | Laboratoire d'Electrochimie et de Physico-chimie des Matériaux et des Interfaces [LEPMI ] | |
| dc.contributor.author | DJURADO, Elisabeth | |
| dc.date.issued | 2016 | |
| dc.identifier.issn | 0378-7753 | |
| dc.description.abstractEn | In this work we present a modified citrate-nitrate route using citric acid as a chelating agent as an effective and facile strategy to obtain nanocrystalline La3Ni2O7+δ (L3N2) and La4Ni3O10−δ (L4N3) powders for the preparation of solid oxide fuel cell cathodes. Both samples crystallize in a Fmmm orthorhombic layered Lan+1NinO3n+1 Ruddlesden-Popper structure, with n = 2 and 3, respectively. The oxygen non-stoichiometry, determined by TGA is equal to 0.05 and 0.06 for L3N2 and L4N3, respectively. The thermal expansion coefficient values of L3N2 and L4N3 are 11.0 × 10−6 K−1 and 11.5 × 10−6 K−1, respectively. This study focused on L3N2, L4N3 and on novel composite electrodes with CGO (Ce0.9Gd0.1O2−δ): L3N2-CGO and L4N3-CGO with a view to taking advantage of their complimentary properties, i.e. high ionic conductivity of CGO and high electronic conductivity of Lan+1NinO3n+1 (n = 2 and 3). A significant improvement of the polarization resistance, from 1.0 to 0.03 Ω cm2 and from 1.5 to 0.52 Ω cm2 at 700 °C, is obtained when 50 wt% CGO is added to L3N2 and L4N3, respectively. In addition, the L3N2-CGO composite shows good long-term stability at 900 °C for 2 weeks in air, confirming its suitability as a SOFC cathode. | |
| dc.description.sponsorship | Center of Excellence in Multifunctional Architectured Materials - ANR-10-LABX-0044 | |
| dc.language.iso | en | |
| dc.publisher | Elsevier | |
| dc.subject.en | IT-SOFCs | |
| dc.subject.en | Mixed electronic ionic conducting oxides | |
| dc.subject.en | Lanthanum nickelate | |
| dc.subject.en | Composite | |
| dc.subject.en | AC impedance | |
| dc.title.en | Lan+1NinO3n+1 (n = 2 and 3) phases and composites for solid oxide fuel cell cathodes: Facile synthesis and electrochemical properties | |
| dc.type | Article de revue | |
| dc.identifier.doi | 10.1016/j.jpowsour.2016.06.047 | |
| dc.subject.hal | Chimie/Matériaux | |
| bordeaux.journal | Journal of Power Sources | |
| bordeaux.page | 337-345 | |
| bordeaux.volume | 325 | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-01426056 | |
| hal.version | 1 | |
| hal.popular | non | |
| hal.audience | Internationale | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-01426056v1 | |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Journal%20of%20Power%20Sources&rft.date=2016&rft.volume=325&rft.spage=337-345&rft.epage=337-345&rft.eissn=0378-7753&rft.issn=0378-7753&rft.au=SHARMA,%20Rakesh%20K.&BURRIEL,%20M%C3%B3nica&DESSEMOND,%20Laurent&BASSAT,%20Jean-Marc.&DJURADO,%20Elisabeth&rft.genre=article |
Fichier(s) constituant ce document
| Fichiers | Taille | Format | Vue |
|---|---|---|---|
|
Il n'y a pas de fichiers associés à ce document. |
|||