等离子喷涂-物理气相沉积制备7YSZ纳米结构固体氧化物燃料电池电解质层（英文）  

Nano-Structured 7YSZ Electrolyte Layer for Solid Oxide Fuel Cell Prepared by Plasma Spray-Physical Vapor Deposition

作　　者：许伟[1,2] 张小锋 周克崧 牛少鹏 常发 刘敏 邓春明 邓子谦 Xu Wei;Zhang Xiaofeng;Zhou Kesong;Niu Shaopeng;Chang Fa;Liu Min;Deng Chunming;Deng Ziqian(Central South University,Changsha 410083,China;National Engineering Laboratory for Modern Materials Surface Engineering Technology,The Key Lab of Guangdong for Modern Surface Engineering Technology,Guangdong Institute of New Materials,Guangzhou 510650,China;Fujian University of Technology,Fuzhou 350118,China)

机构地区：[1]中南大学,湖南长沙410083 [2]广东省新材料研究所现代材料表面工程技术国家工程实验室广东省现代表面工程技术重点实验室,广东广州510650 [3]福建工程学院,福建福州350118

出　　处：《稀有金属材料与工程》2019年第12期3835-3840,共6页Rare Metal Materials and Engineering

基　　金：National Key Research and Development Program of China(2017YFB0306100);Guangdong Academy of Sciences Program(2017GDASCX-0202,2018GDASCX-0402,2018GDASCX-0111);Guangdong Technical Research Program(2017B090916002,2017A070701027);Guangdong Natural Science Foundation(2016A030312015,2017A030310315);Guangzhou Technical Research Program(201605131008557,201707010385)

摘　　要：氧化钇稳定的氧化锆(YSZ)因其高热稳定性和良好的氧离子电导率被广泛地作为电解质材料应用于固体氧化物燃料电池(SOFC)。本研究采用等离子喷涂-物理气相沉积(PS-PVD)技术成功地制备了致密的纳米结构7YSZ薄电解质层,通过SEM、TEM、工业CT以及纳米压痕等技术测定了7YSZ电解质层的微观形貌、结构、力学性能及气体透过率,揭示了电解质层在沉积过程中的生长机制。结果表明:基体温度是影响7YSZ电解质层纳米结构形成的关键因素;当电解质层厚度为8.712.3μm时,其泄露率为2.24×10^-8~2.29×10^-8 cm^4·gf^-1·s^-1;同时,7YSZ电解质层还表现出良好的力学性能,其硬度、弹性模量和弹性回复率分别为10 GPa、140 GPa和57%。Due to high thermal stability and pure oxide ionic conductivity,yttria-stabilized zirconia(YSZ)is the most commonly used electrolyte material for solid oxide fuel cell(SOFC).Nano-structured 7 YSZ electrolyte layers were fabricated by plasma spray-physical vapor deposition(PS-PVD)system.The micrograph,microstructure,mechanical properties and gas permeability were characterized by SEM,TEM,3 D X-ray CT and nano-indenter.Moreover,the deposition mechanism of PS-PVD was also discussed.Results indicate that 7 YSZ electrolyte layers with a thickness of 8.712.3μm were successfully prepared.The substrate temperature is a key factor to form this advanced structure controlled at 600°C.The gas permeability of the nano-structured 7 YSZ electrolyte layer can achieve 2.24×10^-8~2.29×10^-8 cm^4·gf^-1·s^-1.It also shows good mechanical properties,of which the recovery rate,hardness and elastic modulus are 57%,10 GPa and 140 GPa,respectively.

关 键 词：固体氧化物燃料电池 氧化钇稳定的氧化锆 物理气相沉积-等离子喷涂 电解质层 

分 类 号：TQ134.12[化学工程—无机化工] TM911.4[电气工程—电力电子与电力传动]