Modeling Electro-Chemo-Mechanical Behaviors within the Dense BaZr0.8Y0.2O3−δ Protonic-Ceramic Membrane in a Long Tubular Electrochemical Cell

Autor:	Kasra Taghikhani, Alexis Dubois, John R. Berger, Sandrine Ricote, Huayang Zhu, Robert J. Kee
Jazyk:	angličtina
Rok vydání:	2021
Předmět:	electrochemistry transport-induced stress ceramic-proton-conducting membranes BZY20 Chemical technology TP1-1185 Chemical engineering TP155-156
Zdroj:	Membranes, Vol 11, Iss 6, p 378 (2021)
Druh dokumentu:	article
ISSN:	2077-0375
DOI:	10.3390/membranes11060378
Popis:	This paper reports an extended Nernst–Planck computational model that couples charged-defect transport and stress in tubular electrochemical cell with a ceramic proton-conducting membrane. The model is particularly concerned with coupled chemo-mechanical behaviors, including how electrochemical phenomena affect internal stresses and vice versa. The computational model predicts transient and steady-state defect concentrations, fluxes, stresses within a thin BaZr0.8Y0.2O3−δ (BZY20) membrane. Depending on the polarization (i.e., imposed current density), the model predicts performance as a fuel cell or an electrolyzer. A sensitivity analysis reveals the importance of thermodynamic and transport properties, which are often not readily available.
Databáze:	Directory of Open Access Journals
Externí odkaz:	https://doaj.org/article/1f4fa80eb1e64582b89e3f40e6bed1ea Zobrazit plný text záznamu View record in DOAJ Plný text ve formátu PDF Plný text ve formátu HTML
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