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通过将40、400nm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40、400nm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.而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600,650和700℃时的最大功率密度分别为0.173,0.310,0.445W·cm-2.
Three kinds of NiO-GDC composite anodes and single cells with different anode pore sizes and distributions were prepared by mechanical milling of 400nm graphite and NiO-GDC by mixing 40,400nm graphite and NiO-GDC water bath. Microscope test results show that: in the 40,400nm graphite and NiO-GDC water bath stirred and mixed anode tablets were evenly distributed, but the former pore size smaller, the latter a relatively large aperture and 400nm graphite and NiO-GDC mechanical milling mixed Of the anode can be observed in the scale to tens of microns uneven distribution of large pores.Anode conductivity and single cell electrochemical test results show that: the smaller the anode aperture, the more uniform distribution, the conductivity and the single cell The electrochemical performance is better.After 40nm graphite and NiO-GDC water bath stirred and mixed anode sheet obtained after the reduction of the highest conductivity, the electrochemical performance of the best cell at 600,650 and 700 ℃, the maximum power density was 0.173 , 0.310, 0.445 W · cm-2.