阳极微结构对等离子喷涂金属支撑SOFC的电池性能的影响研究  

Effect of Anode Microstructure on Plasma-sprayed Metal Supported SOFC Performance

作　　者：富涛 高九涛 高圆[1] 李成新[1] 李长久[1] 李智 刘涛 Fu Tao;Gao Jiutao;Gao Yuan;Li Chengxin;Li Changjiu;Li Zhi;Liu Tao(State Key Laboratory for Strength of Metal Materials,School of Materials Science and Engineering Xi'an Jiaotong Univeristy,Xi'an 710049;Shandong Energy Group CO.,Ltd.Jinan 250000)

机构地区：[1]西安交通大学材料科学与工程学院金属材料强度国家重点实验室,西安710049 [2]山东能源集团有限公司,济南250000

出　　处：《热喷涂技术》2022年第1期28-37,共10页Thermal Spray Technology

基　　金：国家重点研发计划(2017YFB0306100)。

摘　　要：阳极微结构尤其是表面结构的调控对固体氧化物燃料电池(SOFC)的极化与性能具有显著的影响。大气等离子喷涂(APS)和高温烧结是金属支撑SOFC阳极功能层最常用的两种制备方法。本文采用APS和高温烧结两种制备方法,在相同的金属支撑体上沉积阳极功能层以获得具有不同阳极/电解质界面结构的SOFC。对两种阳极功能层的组织结构、表面粗糙度、比表面积和物相构成进行了研究。结果表明,两种方法制备的阳极组织形貌差别较大,高温烧结的阳极功能层表面具有良好的平整度,而APS制备的阳极功能层呈现出典型的层状结构,表面粗糙度和比表面积较大。从断面形貌中可以看出,高温烧结阳极电池的电解质功能层厚度均一,两种电池阳极与电解质功能层之间均结合紧密。两种电池的输出性能结果表明,APS阳极电池具有较高的输出性能和较低的电极极化阻抗。Atmospheric plasma spraying(APS)and high temperature sintering are both commonly used preparation methods of metal supported solid oxide fuel cell(SOFC)anode functional layer.The microstructure of anode,especially the surface structure,has significant influence on the polarization and performance of SOFC.In this paper,two preparation methods,APS and high temperature sintering,were used to deposit SOFC anode functional layers on the same metal substrate to obtain SOFC with different anode/electrolyte interface structure.The organizational structure,surface roughness,specific surface area and phase composition of the two anode functional layers were studied respectively.The results showed that the morphology of anodes prepared by the two methods was quite different.The surface of anode functional layer prepared by high temperature sintering exhibited good flatness.The anode functional layer prepared by APS presented a typical lamellar structure with larger surface roughness and specific surface area.As was showed in the section morphology,the thickness of electrolyte functional layer of the cells which anode prepared by APS was uniform.The anode and electrolyte functional layer of the two cells were fully bonded.The results showed that the cell which anode prepared by APS performs higher output performance and lower electrode polarization impedance.

关 键 词：大气等离子喷涂 烧结 固体氧化物燃料电池 阳极 

分 类 号：TG174.4[金属学及工艺—金属表面处理]