相转换法制备中低温SOFC阳极支撑体  

Preparation of anode support for medium and low temperature SOFC via phase inversion method

作　　者：王涵多[1] 蔡翠霞[1] 高媛[1] 刘江 WANG Han-duo;CAI Cui-xia;GAO Yuan;LIU Jiang(Guangdong Key Laboratory of Biochip Technology,School of Basic Medical Science,Southern Medical University, Guangzhou,Guangdong 510515,China;School of Environment and Encrgy,South China University of Technology,Guangzhou ,Guangdong 510005,China)

机构地区：[1]南方医科大学基础医学院,广东省生物芯片重点实验室,广东广州510515 [2]华南理工大学环境与能源学院,广东广州510006

出　　处：《电池》2018年第6期388-391,共4页Battery Bimonthly

基　　金：广东省自然科学基金项目(2015A030310468).

摘　　要：利用相转换法,在阳极浆料中添加油酸、相对分子质量为1 000的聚乙二醇(PEG)和丙酮等3种有机添加剂,制备椎管式Ni-钆掺杂氧化铈(Ni-GDC)基阳极支撑体。以丙酮为添加剂时,阳极截面的指状孔结构最多,且在1 400℃下烧结后的孔隙率最高(42%);以PEG-1000和油酸为添加剂时,阳极的指状孔结构减少甚至消失,烧结后的孔隙率较低。以丙酮为添加剂,可在不使用石墨造孔剂的情况下,通过相转换法制得符合固体氧化物燃料电池(SOFC)阳极孔隙率要求的材料。在丙酮为添加剂的阳极上浸渍GDC膜电解质,将GDC电解质膜分别在1 300℃、1 400℃和1 500℃下烧结,发现单体电池在1 400℃烧结后的输出性能最好,在600℃下的功率密度为620 m W/cm2。Cone-shaped nickel and gadolinium doped ceria (Ni-GDC)anode support was prepared via phase inversion method by adding three kinds of organic additives such as oleic acid (C18H34O2 ),polyethylene glycol (PEG)with a molecular weight of 1000 and acetone (CH3COCH3 ).The most finger-like pores were found in the anode cross-section by adding CH3COCH3 and the highest porosity (42%) after sintered at 1 400℃.Both the finger-like pores and anode porosities were reduced with PEG-1000 and CH3COCH3 as additives.The anode supports with appropriate porosity could be prepared without graphite as pore-former by phase inversion method.GDC electrolyte membrane was prepared on anode surface which used CH3 COCH3 as additive and then sintered at 1 300 ℃,1 400 ℃ and 1 500℃,respectively.The performance of the single cell showed that the GDC film exhibited better performance after sintering at 1400℃ ,the maximum power density was 620 mW/cm2 at 600 ℃.

关 键 词：阳极支撑体 固体氧化物燃料电池(SOFC) 电化学性能 相转换法 

分 类 号：TM911.4[电气工程—电力电子与电力传动]