Spark plasma sintering and mechanical properties of tantalum carbonitrides Ta2CxNy

Autor: Jérémie Manaud, Arata Nakajo, Enrico Corniani, Michael Holzhäuser, Andrea Cambriani, Marco Cologna, Peter Hähner, Luka Vlahovic, Rudy Konings

Publikováno v: Open Ceramics, Vol 18, Iss , Pp 100598- (2024)

Dense tantalum-based carbonitride materials featuring >95 % relative density, TaC, Ta2C1.5N0.5, Ta2CN, Ta2C0.5N1.5 and TaN, were prepared by Spark Plasma Sintering (SPS) at 1873 K with a dwell time of 10 min and a pressure of 50 MPa. Despite the pres

Externí odkaz: https://doaj.org/article/7cf82a60e1124b7585cd923625b99a95

Fracture of Porous Ceramics: Application to the Mechanical Degradation of Solid Oxide Cell During Redox Cycling

Autor: Amira Abaza, Arata Nakajo, Sylvain Meille, Jérôme Laurencin, Christian Lenser, Maxime Hubert, Dominique Leguillon

Publikováno v: ECS Transactions
ECS Transactions, 2021, 103 (1), pp.1151-1163. ⟨10.1149/10301.1151ecst⟩
ECS transactions 103(1), 1151-1163 (2021). doi:10.1149/10301.1151ecst
17th International Symposium on Solid Oxide Fuel Cells (SOFC-XVII), Online, Germany, 2021-07-18-2021-07-23

Solid Oxide Cell (SOC) is a high-temperature electrochemical device that can be operated in both fuel and electrolysis modes. It is constituted of a dense electrolyte in Yttria Stabilized Zirconia (YSZ) sandwiched between two porous electrodes. The h

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7cd79c9bb94aaed79632cd78dd5712f2
https://hal.science/hal-03622485/file/ECS_SOFCXVII_Amira_ABAZA_vf.pdf

Characterization of local morphology and availability of triple-phase boundaries in solid oxide cell electrodes

Autor: Wilson K. S. Chiu, Arata Nakajo, G. Rinaldi, Marco Cantoni, J. Van herle, Pierre Burdet

Publikováno v: Acta Materialia

The performance of solid oxide cells is known to be dependent upon the density of three phase boundaries (TPB), but the potential for improving their effective electrocatalytic activity by morphological adjustments is imprecisely known. A spilling al

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::50b3fb229a2ddc87e0de1582e76c7076
https://doi.org/10.1016/j.actamat.2019.07.027

Evolution of the Morphology Near Triple-Phase Boundaries in Ni–Yttria Stabilized Zirconia Electrodes Upon Cathodic Polarization

Autor: Arata Nakajo, Guillaume Jeanmonod, Priscilla Caliandro, L. Navratilova, J. Van herle, Marco Cantoni, Giorgio Rinaldi

Publikováno v: Journal of Electrochemical Energy Conversion and Storage

Microstructural changes in Ni–yttria stabilized zirconia (YSZ) near the YSZ electrolyte were examined by three-dimensional (3D) electron microscopy after electrolysis and fuel cell operation up to 10,700 h and 15,000 h, respectively. The depletion

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e84762a244620ee0a258f276193f36ff
https://doi.org/10.1115/1.4046478

Differential Resistance Analysis – a New Tool for Evaluation of Solid Oxide Fuel Cells Degradation

Autor: Arata Nakajo, Dario Montinaro, Blagoy Burdin, Roberto Spotorno, Anthony Chesnaud, Alain Thorel, Daria Vladikova, Maxime Hubert, Zdravko Stoynov, Paolo Piccardo, Jérôme Laurencin

Publikováno v: MRS Advances. 2:3991-4003

Solid Oxide Fuel Cells (SOFCs) are a promising technology that can provide efficient and clean energy production. The general barriers hindering their market entry are durability, i.e. resistance to aging, and costs. In parallel to the deeper insight

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9bdcbe755cff09e02559d022f0be0136
https://doi.org/10.1557/adv.2017.592