1. An efficient symmetrical solid oxide electrolysis cell with LSFM-based electrodes for direct electrolysis of pure CO2.
- Author
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Peng, Xianzhu, Tian, Yunfeng, Liu, Yun, Wang, Wenjie, Jia, Lichao, Pu, Jian, Chi, Bo, and Li, Jian
- Subjects
ELECTROLYSIS ,ELECTRODES ,OXIDES ,CELLS ,CATHODES ,ANODES - Abstract
• LSFM is studied as symmetrical electrode of SOEC for direct pure CO 2 electrolysis. • The cell with LSFM shows high current density of 1.107 A/cm
2 at 800 °C @2.0 V. • The cell shows CO production rate at 800 °C@2.0 V of 6.438 mL/(min cm2 ). In this paper, we study the perovskite La 0.6 Sr 0.4 Fe 0.9 Mn 0.1 O 3- δ (LSFM) as both the cathode and anode in a symmetrical solid oxide electrolysis cell (SOEC) for direct high-temperature electrolysis of pure CO 2. The cell with a configuration of LSFM-GDC|GDC||YSZ||GDC|LSFM-GDC performs with perfect electrochemical properties with a polarization resistance of 0.068 Ω·cm2 and a current density of 1.107 A/cm2 at 800 °C and 1.744 A/cm2 at 850 °C under an operating voltage of 2.0 V. The corresponding CO production rate at 800 °C and 2.0 V is 6.438 mL/(min·cm2 ). These results confirm that La 0.6 Sr 0.4 Fe 0.9 Mn 0.1 O 3-δ can act as an excellent electrode material in a symmetrical SOEC for electrolysis of pure CO 2. [ABSTRACT FROM AUTHOR] more...- Published
- 2020
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