Ru-Ni-YSZ多维阳极在直接乙醇SOFC的应用研究  

Application of Ru Nano Flowers Doped Ni-YSZ Anode in Ethanol-fueled SOFC

作　　者：孙良良[1] 胡志敏[1] 罗凌虹[1] 吴也凡[1] 石纪军[1] 程亮[1] 徐序[1] 

机构地区：[1]景德镇陶瓷学院,江西景德镇333001

出　　处：《稀有金属材料与工程》2017年第8期2322-2326,共5页Rare Metal Materials and Engineering

基　　金：国家自然科学基金(50774097;51162014;51262010;51462011)

摘　　要：采用浸渍-自置换法,以Ru Cl3为添加剂,丙酮为表面活性剂,在阳极支撑SOFC的Ni-YSZ阳极上表面制备纳米Ru功能层,并制备Ru-Ni-YSZ||YSZ||Pd-Ag单电池。通过SEM,TEM,XRD对电极进行表征,发现Ru在Ni-YSZ阳极表面以及内部可以形成多维纳米花状催化层。通过测试不同沉积量和不同温度下纳米Ru层对单电池的电性能的影响。在750℃时,以乙醇为燃料,Ru沉积量为0.6%(质量分数)的燃料达到最高264 m W/cm^2。当Ru沉积量为0.4%时,燃料电池在700,750,800℃时,最大功率分别达到200、261和316 m W/cm2。在开路电压条件下,电池运行15h,没有出现下降和积碳现象。Three-dimensional Ru nano flowers were formed by nano sheets originating from the Ni-YSZ anode layer. The nano flowers were used as a functional layer for direct ethanol solid oxide fuel cells（DE-SOFCs）. The morphology and structure of as-prepared catalysts were characterized by scanning electron microscopy（SEM）, transmission electron microscopy（TEM） and X-ray diffraction（XRD）. Results indicate that the flower-like Ru nano layer is uniformly dispersed on Ni-YSZ surface. These nanostructures show very interesting performance for direct ethanol solid oxide fuel cell. With 0.6 wt% Ru in anode, the cell peak power density reaches 264 m W/cm^2 when ethanol fuel is at 750 ℃ The fuel cell power density reaches 200, 261 and 316 m W/cm^2 at 700, 750 and 800 oC, respectively. By dispersing a 0.6 wt% Ru layer into anode, the performance of fuel cells is improved and kept stable at open circuit voltage（OCV） for 15 h without carbon deposition.

关 键 词：固体氧化物燃料电池 阳极 积碳 钌 乙醇 

分 类 号：TM911.4[电气工程—电力电子与电力传动]