Barium cerate-zirconate electrolyte powder prepared by carbonate coprecipitation for high performance protonic ceramic fuel cells. Issue 5 (1st March 2023)

• Record Type: Journal Article
• Authors: Fan, Zidai; Cao, Dan; Zhou, Mingyang; Zhu, Ziyi; Chen, Meilong; Liu, Jiang
• Is Part Of: Ceramics international. Volume 49:Issue 5(2023)
• Page Start: 8524
• Page End: 8532
• Publication Date: 2023-03-01
• Subjects: Carbonate coprecipitation -- Barium cerate-zirconate -- Protonic ceramic fuel cell -- Powder synthesis -- Sinterability; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2022.11.015
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: Proton-conducting perovskite oxide BaCe0.7 Zr0.1 Y0.2 O3-δ (BZCY) is prepared by carbonate coprecipitation method using Tween-80 as the surfactant. A powder with well dispersed particles of an average size of 200 nm is obtained. The powder is applied as the original material of the electrolyte in an Ni-based anode-supported protonic ceramic fuel cell (PCFC). The electrolyte can be densified to high density after co-sintering with the anode substrate, without any sintering aids, at 1400 °C in open air. The PCFC with an electrolyte thickness of 20 μm, using humid hydrogen (3% H2 O) as the fuel and ambient air as the oxidant, gives a peak power density of 1050 mW cm −2 at 700 °C. The conducting activation energy of the electrolyte is 0.36 eV. The superiority of the BZCY powder prepared by the coprecipitation method is investigated by comparing with a BZCY powder made by conventional solid-state reaction method.