摘要
采用流延法分别制备了以可溶性淀粉、石墨和玉米淀粉为阳极造孔剂的阳极支撑型SOFC。以8%(摩尔分数)氧化钇稳定的氧化锆(ZrO)_(0.92)(Y_(2)O_(3))_(0.08)(YSZ)为电解质材料,Ni∶YSZ为1∶1(质量比)的金属陶瓷(Ni-YSZ)为阳极,Ag-GDC为阴极,在电解质和阴极之间制备一层GDC为过渡层。采用加湿H_(2)[H_(2)O含量3%(体积分数)]作为燃料气,进行电化学测试。结果表明:800℃下,玉米淀粉的功率密度845 mW/cm^(2)为最大,远高于石墨(422 mW/cm^(2))和可溶性淀粉(312 mW/cm^(2))的功率密度。通过阻抗谱、扫描电镜和孔隙率测试对不同造孔剂制备的阳极微观结构与电池性能之间的关系进行了表征和分析。
The anode supported SOFC with soluble starch,graphite and corn starch as pore-former were prepared by tape casting method.Using 8%(mole fraction)yttria-stabilized zirconia(ZrO)_(0.92)(Y_(2)O_(3))_(0.08)(YSZ)as electrolyte material,cermet(Ni-YSZ)with Ni∶YSZ ratio of 1∶1(mass ratio)as anode and Ag-GDC as cathode,a layer of GDC as transition layer was prepared between electrolyte and cathode.Humidified H_(2)(containing 3%H_(2)O)was used as fuel gas for electrochemical test.The results show that the power density of corn starch is 845 mW/cm^(2),which is much higher than that of graphite(422 mW/cm^(2))and soluble starch(312 mW/cm^(2)).The relationship between the microstructure of the anode prepared by different pore-former and the performance of the battery is characterized and analyzed by impedance spectroscopy,scanning electron microscopy and porosity test.
作者
夏美荣
田丰源
颜晓敏
邹高昌
刘江
XIA Meirong;TIAN Fengyuan;YAN Xiaomin;ZOU Gaochang;LIU Jiang(Guangzhou Key Laboratory for Surface Chemistry of Energy Materials,New Energy Research Institute,School of Environment and Energy,South China University of Technology,Guangzhou Guangdong 510006,China)
出处
《电源技术》
CAS
北大核心
2022年第5期492-495,共4页
Chinese Journal of Power Sources
基金
国家自然科学基金(91745203,UI601207)。
