Study on Performance and Preparation of Lanthanum-Strontium-Iron-Chromium Electrodes for Using in Symmetric SOFC

Hao Dong; Zhiqun Cao; Zhaotong Wei

doi:10.54097/8d6pg665

Authors

Hao Dong
Zhiqun Cao
Zhaotong Wei

DOI:

https://doi.org/10.54097/8d6pg665

Keywords:

Symmetric Solid Oxide Fuel Cells, Electrochemical Properties, Fuel Cell, Stability Testing

Abstract

Solid oxide fuel cells (SOFCs) is a transformative energy conversion technology that offers higher efficiency, reliability and environmental friendliness compared to conventional systems. In this study, La_0.3Sr_0.7Cr_0.3Fe_0.7O_3-δ (LSFCr) was prepared by a sol-gel synthesis route and subsequently applied to a symmetric solid oxide fuel cells (SSOFCs). The LSFCr crystal structure was analyzed by X-ray diffraction (XRD) analysis. In order to reduce the manufacturing cost and simplify the cell structure, the SSOFCs configuration LSFCr|SDC|SSZ|SDC|LSFCr (with SDC buffer layer) - was designed using LSTF electrodes, SDC and SSZ electrolytes. The cell has an Rp of 0.7 Ω cm² and a PPD of 200 mW cm^-2 at 800 °C. Notably, the symmetric cell demonstrated robust stability over five redox cycles and maintained performance integrity in short-term durability evaluations, underscoring its potential to advance SSOFCs technology.

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