固体氧化物燃料电池阳极材料La_(0.8)Mg_(0.2)Cr_(0.8)M_(0.2)O_(3-δ)(M=Zn,Al,Zr)的研究  

Research on La_(0.8)Mg_(0.2)Cr_(0.8)M_(0.2)O_(3-δ)(M=Zn,Al,Zr)as Anode Materials for Solid Oxide Fuel Cell

作　　者：张艳雪[1] 朱伟长[1] 

机构地区：[1]安徽工业大学材料科学与工程学院安徽省金属材料与加工重点实验室,安徽马鞍山243002

出　　处：《安徽工业大学学报（自然科学版）》2012年第4期331-334,共4页Journal of Anhui University of Technology（Natural Science）

基　　金：安徽省科技攻关项目(07010202070)

摘　　要：采用Sm0.2Ce0.8O1.9(SDC)作为电解质材料,La0.6Sr0.4Co0.2Fe0.8O3-δ(LSCF)作为阴极材料,以溶胶—凝胶法制备的La0.8Mg0.2Cr0.8Zn0.2O3-δ,La0.8Mg0.2Cr0.8Al0.2O3-δ,La0.8Mg0.2Cr0.8Zr0.2O3-δ粉体作为阳极材料,组装硫氧固体氧化物燃料电池。分别以硫蒸汽和二氧化硫气体为燃料气,测试电池阳极材料性能。结果表明:以硫蒸汽为燃料,La0.8Mg0.2Cr0.8Zn0.2O3-δ在750℃达到最大开路电压420 mV,此时最大功率密度为23 mW/cm2;以二氧化硫为燃料,La0.8Mg0.2Cr0.8Zn0.2O3-δ在650℃获得最大开路电压162 mV,最大功率密度为2 mW/cm2。催化效果顺序为La0.8Mg0.2Cr0.8Zn0.2O3-δ>La0.8Mg0.2Cr0.8Al0.2O3-δ>La0.8Mg0.2Cr0.8Zr0.2O3-δ。A sulfur-oxygen solid oxide fuel cell（SOFC） was assembled, by using Sm0.2Cc0.8O1.9 （SDC） as solid electrolyte material, La0.6Sr0.4Co0.2Fe0.8O3-δ （LSCF） as cathode material, powders of La0.8Mg0.2Cr0.8Zn0.2O3-δ, La0.8Mg0.2Cr0.8Al0.2O3-δ and La0.8Mg0.2Cr0.8Zr0.2O3-δ synthesized with sol-gel method as anode materials. Performances of the SOFC anode were characterized by taking S vapor and SO2 gas as fuel gas, respectively. Results show when S vapor is used as fuel gas, La0.8Mg0.2Cr0.8Zn0.2O3-δ is used as anode material,maximum output open-circuit-voltage （OCV） of 420 mV and maximum power density of 23 mW/cm2 are generated at 750 ℃ ;When SO2 is used as fuel gas, maximum output OCV of 162 mV and maximum power density of 2 mW/cm2 are generated at 650 ℃. The order of anode catalytic efficiency is as follows La0.8Mg0.2Cr0.8Zn0.2O3-δ 〉 La0.8Mg0.2Cr0.8Al0.2O3-δ 〉 La0.8Mg0.2Cr0.8Zr0.2O3-δ.

关 键 词：铬酸镧 固体氧化物燃料电池 阳极 

分 类 号：TM911[电气工程—电力电子与电力传动]