A new family of Ce-doped SmFeO3 perovskite for application in symmetrical solid oxide fuel cells

A new family of Ce-doped SmFeO3 perovskite for application in symmetrical solid oxide fuel cells
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用于对称固体氧化物燃料电池的新型 Ce 掺杂 SmFeO3 钙钛矿系列

DOI:
10.1016/j.jpowsour.2016.02.069
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发表时间:
2016-04
影响因子:
9.2
通讯作者:
周峻
周峻
中科院分区:
工程技术2区
文献类型:
--
作者:
周峻

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在这里,评估了纳米孔Sm0.95Ce0.05FeO−δ(SCFO)钙钛矿型氧化物作为对称固体氧化物燃料电池电极材料的可能性。对在850℃、5%H2/N2中焙烧10h的样品进行表征后发现,SCFO具有良好的氧化还原稳定性,在纳米孔阳极和阴极上均获得了较好的电化学性能,这主要是由于SCFO对氧化还原反应具有较高的催化活性。在800℃下,以纯净、加湿的H_2为燃料,超临界水热电池的峰值功率密度高达130M W/cm−_2。此外,在相同条件下,SCFO:YSZ(7:3)|YSZ|SCFO:YSZ(7:3)对称电池的最大功率密度可达193mW/cm−2。
Here, a nanoporous Sm0.95Ce0.05FeO3−δ(SCFO) perovskite-type oxide is assessed in regard to its possible use as an electrode material for symmetrical solid oxide fuel cells. It is found that SCFO has a good redox stability after characterizing the sample which is calcined at 850 °C in 5% H2/N2for 10 h. Optimized electrochemical performances are obtained in both the nanoporous anode and cathode which are mainly due to the high catalytic activity of SCFO for redox reaction. The peak power density of SCFO|YSZ|SCFO symmetrical cell is as high as 130 mW cm−2at 800 °C using pure, humidified H2as the fuel. Moreover, the maximum power density of 193 mW cm−2can be obtained for the SCFO:YSZ(7:3)|YSZ|SCFO:YSZ(7:3) symmetrical cell under the same conditions.
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