基于高度非对称结构电解质中空纤维的微管式固体氧化物燃料电池制备  

Preparation of microtubular solid oxide fuel cells based on highly asymmetric structured electrolyte hollow fibers

作　　者：刘杨[1] 刘楠[1] 谭小耀[1,2] 

机构地区：[1]山东理工大学化学工程学院,淄博255049 [2]天津工业大学环境与化学工程学院,天津300160

出　　处：《中国科学：化学》2011年第3期531-536,共6页SCIENTIA SINICA Chimica

基　　金：国家自然科学基金(20676073)资助

摘　　要：提出了一种简单而方便的微管式固体氧化物燃料电池(MT-SOFCs)的制备新方法.首先应用改进相转化-烧结技术制备由致密电解质表皮薄层和多孔支撑层构成的高度非对称结构电解质中空纤维膜(微管),在电解质中空纤维膜的多孔支撑层内通过化学镀法沉积Ni催化剂作为电池阳极,而致密电解质表皮层直接作为电解质膜,在电解质微管外表面用浆料涂层法制备电池的多孔阴极,烧结后即得到完整的MT-SOFC.应用该方法制备了Ni-YSZ|YSZ|LSCF微管式电池,该电池以H2/空气作原料气,在800℃时最大输出功率达到159.6mWcm-2.A simple and cost-effective method has been developed for the fabrication of microtubular solid oxide fuel cells （MT-SOFCs）. Highly asymmetric electrolyte hollow fibers composed of a thin dense skin layer and a thick porous substrate are first prepared by a modified phase inversion/sintering technique. The porous substrate is then formed into the anode by deposition of a Ni catalyst via an electroless plating method inside the pores while the thin dense skin layer serves directly as the electrolyte film of the fuel cells. A porous cathode layer is produced on the outer surface of the Ni-deposited hollow fibers by slurry coating and subsequent sintering to form a complete micro tubular fuel cell. The process has been employed to fabricate yttrium stabilized zirconia （YSZ） supported Ni-YSZ｜YSZ｜La0.6Sr0.4Co0.2Fe0.8O3-δ （LSCF） microtubular fuel cells. The maximum output of the resulting cells is 159.6 mW cm-2 at 800 °C when using H2 as the fuel feed and air as the oxidant.

关 键 词：固体氧化物燃料电池 化学镀 镍阳极 相转化 

分 类 号：TM911.4[电气工程—电力电子与电力传动]