Ni-Ce0.8Gd0.2O1.9阳极孔隙对中温固体氧化物燃料电池性能的影响_中国硅酸盐学会 - 精品期刊
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Ni-Ce0.8Gd0.2O1.9阳极孔隙对中温固体氧化物燃料电池性能的影响
2014-03-21 | 编辑:enablesite | 【
党琦,彭开萍,郭桂平
(福州大学材料科学与工程学院,福州350108)
 
摘要:通过将40400nm石墨与NiO-GDC水浴搅拌混合,将400nm石墨与NiO-GDC机械研磨混合制备得到3种阳极孔隙大小及分布不同的NiO-GDC复合阳极片及单电池片.阳极片扫描电子显微镜测试结果表明:在40400nm石墨与NiO-GDC水浴搅拌混合得到的阳极片中孔隙分布均匀,但前者孔径较小,后者孔径相对较大.400nm石墨与NiO-GDC机械研磨混合得到的阳极片中可明显观察到尺度达到几十微米的不均匀分布的大孔.阳极电导率及单电池电化学性能测试结果表明:阳极孔隙越小,分布越均匀,则电导率和单电池的电化学性能越好.40nm石墨与NiO-GDC水浴搅拌混合得到的阳极片还原后的电导率最高,其单电池的电化学性能最好,其在600, 650700℃时的最大功率密度分别为0.173, 0.310, 0.445W·cm-2.
关键词:中温固体氧化物燃料电池;阳极支撑电池;阳极孔隙;电化学性能;阳极
中图分类号:O646; TM911.4  文献标志码:A  文章编号:0454-5648(2014) 01-0056-09
网络出版时间:2013-12-2714:16:00
网络出版地址:http://www.cnki.net/kcms/detail/11.2310.TQ.20131227.1416.011.html
 
Effect of Ni-Ce0.8Gd0.2O1.9 Anode Poreson Performance of Intermediate
Temperature Solid Oxide Fuel Cells
DANG Qi, PENG Kaiping, GUO Guiping
(College of Materials Science and Engineering, Fuzhou University, Fuzhou 350108, China)
 
Abstract: Three kinds of anodes and cells with different pores in anode were prepared via water bath-mixing graphite particles of 40nm and 400nm with NiO-GDC anode powders, and via mechanically-mixing graphite of the size of 400nm with NiO-GDC anode powders.The results of anodes by scanning electron microscopy show that the pores distribute uniformly in anodes fabricated via water bath-mixing graphite particles of 40nm and 400nm with NiO-GDC anode powders.The pore size of the latter anode is greater than that of the former anode.In anode fabricated via mechanically-mixing graphite particles of 400nm with NiO-GDC anode powders, some larger pores of several ten microns appear and distributenon-uniformly.The results also indicate that the smaller the anode pores are, the more uniformly the anode pores distribute, and the better the electrochemical performance of the anode and its single cell will be.The cell fabricated via water bath-mixing graphite particles of 40nm with NiO-GDC anode powders has the superio relectrochemical performance.The maximum power densities of this cell are 0.173, 0.310 and 0.445W/cmat 600650 and 700℃,respectively.
 
Key words: intermediate temperature solid oxide fuel cells; anode-supported cell; anode pores; electrochemical performance;  anode
 
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