Open AccessEnhanced performance of a Ba0.5Sr0.5Co0.8Fe0.2O3−δ based oxygen electrode for solid oxide electrolysis cells by decorating with Ag particles
Author(s) -
Jie Zheng,
Xiaoyan Wang,
Ji Haeng Yu,
Na Tian
Publication year - 2021
Publication title -
materials research express
Language(s) - English
Resource type - Journals
ISSN - 2053-1591
DOI - 10.1088/2053-1591/abeb49
Subject(s) - clark electrode , electrode , electrolysis , oxygen , polarization (electrochemistry) , materials science , electrochemistry , oxygen evolution , oxide , high temperature electrolysis , analytical chemistry (journal) , inorganic chemistry , chemistry , metallurgy , organic chemistry , chromatography , electrolyte
To improve the performance of a Ba 0.5 Sr 0.5 Co 0.8 Fe0 0.2 O 3− δ (BSCF) oxygen electrode in a solid-oxide electrolysis cell (SOEC), Ag particles were added to increase its conductivity and thus its electrochemical performance. The experiment results showed that the polarization resistance of Ag decorated BSCF-SDC oxygen electrode with the appropriate amount of Ag particles was lower than that of BSCF-SDC oxygen electrode. Especially, the polarization resistance of Ag decorated BSCF-SDC oxygen electrode with 1.3 wt.% Ag particles (noted as 1.3Ag-BSCF-SDC) was as low as 0.006 Ω cm 2 . The 1.3Ag-BSCF-SDC oxygen electrode showed good stability in the short-term electrolysis durability test. The electrolysis cell based on 1.3Ag-BSCF-SDC oxygen electrode showed better performance than that based on BSCF-SDC oxygen electrode. Therefore, this method is an effective way to improve the performance of a BSCF-based oxygen electrode for an SOEC.