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
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所属单位:能源与动力学院
发表刊物:INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
关键字:Electrochemical performance Electroless deposition Pd/Co(Mn) alloys Solid oxide fuel cells Thermal stability
摘要:In this work, we show that higher Co or Mn dopant content of up to 25 mol% on Pd can be obtained without modifying the original crystal structure of Pd via co-reduction synthesis route using hydrazine (N2H4), which is not achievable via conventional sol-gel route. The synthesized Co/Mn-doped Pd alloys can inhibit Pd agglomeration that hinders Pd use as an oxygen reduction reaction (ORR) promoter on solid oxide fuel cell (SOFC) cathode. The presence of Co or Mn on Pd lattice of Co/Mn-doped Pd alloy-decorated YSZ (Y2O3 stabilized ZrO2) cathode provides dual advantages of improving the ORR performance of the cathode and enhancing the ORR performance stability during long term operation. Between 600 degrees C and 800 degrees C, Pd0.90Co0.10O-impregnated YSZ cathode displayed the highest ORR performance among PdO-, Pd0.90Co0.10O-, Pd0.75Co0.025O-, Pd0.90Mn0.10O-, and Pd0.75Mn0.25O-impregnated cathodes as indicated by its relatively low area specific resistance of 0.14 Omega cm(2) at 700 degrees C. Our thermal gravimetric analyses and scanning electron microscopy images revealed that the high electrochemical performance stability of Co/Mn-doped Pd alloys during 30 hour cathodic current test correlates with their higher metal <-> metal oxide conversion reversibility and microstructure stability under thermal cycling between room temperature and 900 degrees C (relative to Pd). (C) 2017 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
ISSN号:0360-3199
是否译文:否
发表时间:2018-01-04
合写作者:Wang, Zaixing,Sunarso, Jaka,毛军逵,Zhou, Wei
通讯作者:梁凤丽