用于质子传导固体氧化物燃料电池的三导电层状钙钛矿作为阴极材料。
Triple-conducting layered perovskites as cathode materials for proton-conducting solid oxide fuel cells.
作者信息
Kim Junyoung, Sengodan Sivaprakash, Kwon Goeun, Ding Dong, Shin Jeeyoung, Liu Meilin, Kim Guntae
机构信息
Department of Energy Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 689-798 (Korea) http://gunslab.unist.ac.kr.
出版信息
ChemSusChem. 2014 Oct;7(10):2811-5. doi: 10.1002/cssc.201402351. Epub 2014 Aug 21.
We report on an excellent anode-supported H(+) -SOFC material system using a triple conducting (H(+) /O(2-) /e(-) ) oxide (TCO) as a cathode material for H(+) -SOFCs. Generally, mixed ionic (O(2-) ) and electronic conductors (MIECs) have been selected as the cathode material of H(+) -SOFCs. In an H(+) -SOFC system, however, MIEC cathodes limit the electrochemically active sites to the interface between the proton conducting electrolyte and the cathode. New approaches to the tailoring of cathode materials for H(+) -SOFCs should therefore be considered. TCOs can effectively extend the electrochemically active sites from the interface between the cathode and the electrolyte to the entire surface of the cathode. The electrochemical performance of NBSCF/BZCYYb/BZCYYb-NiO shows excellent long term stability for 500 h at 1023 K with high power density of 1.61 W cm(-2) .
我们报道了一种出色的阳极支撑型H(+) -SOFC材料体系，该体系使用一种三重传导（H(+) /O(2-) /e(-) ）氧化物（TCO）作为H(+) -SOFC的阴极材料。通常，混合离子（O(2-) ）和电子导体（MIECs）已被选作H(+) -SOFC的阴极材料。然而，在H(+) -SOFC体系中，MIEC阴极将电化学活性位点限制在质子传导电解质与阴极之间的界面处。因此，应考虑用于定制H(+) -SOFC阴极材料的新方法。TCO可以有效地将电化学活性位点从阴极与电解质之间的界面扩展到阴极的整个表面。NBSCF/BZCYYb/BZCYYb-NiO的电化学性能在1023 K下表现出优异的长期稳定性，持续500小时，功率密度高达1.61 W cm(-2) 。
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