Infiltrated Ba 0.5 Sr 0.5 Co 0.8 Fe 0.2 O 3-? -Based Electrodes as Anodes in Solid Oxide Electrolysis Cells

Xavier Majnoni d’Intignano, Davide Cademartori, Davide Clematis, Sabrina Presto, Massimo Viviani, Rodolfo Botter, Antonio Barbucci, Giacomo Cerisola, Gilles Caboche and M. Paola Carpanese
Additional contact information
Xavier Majnoni d’Intignano: ICB-UMR6303, FCLAB, CNRS–Université de Bourgogne Franche-Comté, 9 Avenue Savary, BP47870 21078 Dijon CEDEX, France
Davide Cademartori: DICCA-UNIGE, Via all’Opera Pia 15, 16145 Genova, Italy
Davide Clematis: DICCA-UNIGE, Via all’Opera Pia 15, 16145 Genova, Italy
Sabrina Presto: CNR-ICMATE, c/o DICCA-UNIGE, Via all’Opera Pia 15, 16145 Genova, Italy
Massimo Viviani: CNR-ICMATE, c/o DICCA-UNIGE, Via all’Opera Pia 15, 16145 Genova, Italy
Rodolfo Botter: DICCA-UNIGE, Via all’Opera Pia 15, 16145 Genova, Italy
Antonio Barbucci: DICCA-UNIGE, Via all’Opera Pia 15, 16145 Genova, Italy
Giacomo Cerisola: DICCA-UNIGE, Via all’Opera Pia 15, 16145 Genova, Italy
Gilles Caboche: ICB-UMR6303, FCLAB, CNRS–Université de Bourgogne Franche-Comté, 9 Avenue Savary, BP47870 21078 Dijon CEDEX, France
M. Paola Carpanese: DICCA-UNIGE, Via all’Opera Pia 15, 16145 Genova, Italy

Energies, 2020, vol. 13, issue 14, 1-10

Abstract: In the last decades, several works have been carried out on solid oxide fuel cell (SOFC) and solid oxide electrolysis cell (SOEC) technologies, as they are powerful and efficient devices for energy conversion and electrochemical storage. By increasing use of renewable sources, a discontinuous amount of electricity is indeed released, and reliable storage systems represent the key feature in such a future energy scenario. In this context, systems based on reversible solid oxide cells (rSOCs) are gaining increasing attention. An rSOC is an electrochemical device that can operate sequentially between discharging (SOFC mode) and charging (SOEC mode); then, it is essential the electrodes are able to guarantee high catalytic activity, both in oxidation and reduction conditions. Ba 0.5 Sr 0.5 Co 0.8 Fe 0.2 O 3-δ (BSCF) has been widely recognized as one of the most promising electrode catalysts for the oxygen reduction reaction (ORR) in SOFC technology because of its astonishing content of oxygen vacancies, even at room temperature. The purpose of this study is the development of BSCF to be used as anode material in electrolysis mode, maintaining enhanced energy and power density. Impregnation with a La 0.8 Sr 0.2 MnO 3 (LSM) discrete nanolayer is applied to pursue structural stability, resulting in a long lifetime reliability. Impedance spectroscopy measurements under anodic overpotential conditions are run to test BSCF and LSM-BSCF activity as the electrode in oxidation mode. The observed results suggest that BSCF is a very promising candidate as an oxygen electrode in rSOC systems.

Keywords: BSCF; SOEC; SOFC; rSOC; anodic overpotential; impedance spectroscopy (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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