A promising strontium and cobalt-free air electrode Pr1-xCaxFeO3-d for solid oxide electrolysis cell
A promising strontium and cobalt-free air electrode Pr1-xCaxFeO3-d for solid oxide electrolysis cell
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DOI：
10.1016/j.ijhydene.2021.06.185
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发表时间：
2021-08-12
影响因子：
7.2
通讯作者：
Wang, Shaorong
中科院分区：
文献类型：
--
作者：
Li, Yongyong;Yang, Lili;Wang, Shaorong
采用甘氨酸-硝酸盐燃烧法成功合成了一种有前景的无锶和钴铁氧体Pr1-xCaxFeO3-delta (PCF, x = 0, 0.1, 0.2, 0.3, 0.4, 0.5)，并用作蒸汽电解固体氧化物电解池(SOEC)的空气电极。对PCF的晶体结构和电导率进行了详细研究。根据电导率测试，选择电导率较高的Pr0.6Ca0.4FeO3-δ（PCF64）作为空气电极，制备PCF64|GDC|SSZ|YSZ-NiO结构的单电池。 SOFC模式下，以氢气为燃料，800℃下单电池最大功率密度为462.93 mW cm(-2)。 SOEC模式下，800℃、1.3 V下，电流密度达到277.14 mA cm(-2)，相应的产氢率为115.84 mL cm(-2) h(-1)。在10 h短期稳定性测试中，电池表现出良好的电解稳定性。 (c) 2021 氢能源出版物有限责任公司。由爱思唯尔有限公司出版。保留所有权利。
A promising strontium and cobalt-free ferrite Pr1-xCaxFeO3-delta (PCF, x = 0, 0.1, 0.2, 0.3, 0.4, 0.5) has been synthesized successfully by glycine-nitrate combustion method and used as the air electrode of solid oxide electrolysis cell (SOEC) for steam electrolysis. The crystal structure and electricity conductivity of PCF are investigated in detail. According to the conductivity test, Pr0.6Ca0.4FeO3-delta (PCF64) with higher conductivity is selected as the air electrode to pre-paring the single cell with structure of PCF64|GDC|SSZ|YSZ-NiO. Under SOFC mode, the maximum power density of the single cell is 462.93 mW cm(-2) at 800 degrees C with hydrogen as fuel. Under SOEC mode, the current density reaches 277.14 mA cm(-2) and the corresponding hydrogen production rates is 115.84 mL cm(-2) h(-1) at 800 degrees C at 1.3 V. In the 10 h short-term stability test, the cell shows good electrolysis stability. (c) 2021 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.