教授 硕士生导师
招生学科专业:
动力工程及工程热物理 -- 【招收硕士研究生】 -- 能源与动力学院
航空宇航科学与技术 -- 【招收硕士研究生】 -- 能源与动力学院
能源动力 -- 【招收硕士研究生】 -- 能源与动力学院
性别:女
毕业院校:华中科技大学
学历:博士研究生毕业
学位:工学博士学位
所在单位:能源与动力学院
办公地点:能源与动力学院,10-439
联系方式:fengli0912@nuaa.edu.cn fengli0912@163.com
电子邮箱:
最后更新时间:..
点击次数:
所属单位:能源与动力学院
发表刊物:INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
关键字:Solid oxide fuel cells Cathode Electrochemical performance Nano-structured electrode PdO alloys Thermal stability
摘要:Palladium (Pd) is an attractive cathode catalyst component for solid oxide fuel cells (SOFCs) that has high tendency to agglomerate during operation at around 800 degrees C. This work shows that such agglomeration can be inhibited by alloying Co into Pd. PdO, Pd0.95Co0.05O, Pd0.90Co0.10O, and Pd0.80Co0.20O were synthesized and characterized. Powder X-ray diffraction patterns at 750 and 900 degrees C confirmed that PdO decomposition to Pd which normally occurred at 840 degrees C was suppressed for Co containing Pd alloys while thermal gravimetric analyses indicated improved redox reversibility of PdO <-> Pd conversion for alloys during the thermal cycling between 600 and 900 degrees C. Scanning electron microscopy images supported these arguments. Pd0.90Co0.10+yttria stabilized zirconia (YSZ) electrode (i.e., 10 mol % Co containing PdO-impregnated YSZ electrode) displayed the highest oxygen reduction reaction (ORR) performance and stability. The polarization resistance for ORR on Pd0.90Co0.10+YSZ cathode is only 0.088 Omega cm(2) at 750 degrees C. During polarization test at 750 degrees C, Pd0.90Co0.10+YSZ cathode showed stable performance for 30 h while the performance of Pd+YSZ cathode degraded after 10 h. (C) 2016 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
ISSN号:0360-3199
是否译文:否
发表时间:2017-03-09
合写作者:Sunarso, Jaka,毛军逵,Zhou, Wei
通讯作者:梁凤丽,Zhou, Wei,梁凤丽