节点文献
凝胶注模法合成La0.75Sr0.25Mn0.5Cr0.5-xCuxO3-δ（x=0,0.05）SOFC电极材料及其性能研究
Synthesis and characterization of a new electrode material La0.75Sr0.25Mn0.5Cr0.5-xCuxO3-δ by gel-casting for SOFC
【Author】 SHEN Ye,LIU Yi,LU Jun,YIN Yi-Mei~* (School of Chemistry and Chemical Engineering,Shanghai Jiao Tong University,Shanghai 200240, China)
【机构】 上海交通大学化学化工学院；
【摘要】 本文采用溶胶.凝胶法制备了B位Cu部分取代Cr的La0.75Sr0.25Mn0.5Cr0.5-xCuxO3-δ(LSMCr0.5-xCux,x=0,0.05)材料,通过XRD研究了材料的晶相、TEM表征了其微观形貌、并研究了其电化学性能,评价了LSMCr0.5-xCux作为SOFC阳极的潜力。结果表明,LSMCr0.5-xCux（x=0,0.05）在1000℃煅烧5h以上均可形成钙钛矿晶相,但由于Cu的掺入导致粉体粒径比未掺杂的LSCM有所增大。制备了对称电池研究了材料的阴阳极阻抗特性,结果表明,Cu的掺入显著改善了材料的电化学性能。
【Abstract】 B-site substitution of La0.75Sr0.25Mn0.5Cr0.5-xCuxO3-δ(LSMCr0.5-xCux,x=0,0.05) perovskite oxides used as anode materials of Solid oxide fuel cells（SOFC） were prepared by gel-casting method.Phase analysis and microstructure of LSMCr0.5-xCuxwere characterized by X-Ray diffusion（XRD） and transmission electron microscopy（TEM）,respectively.Area specific polarization resistance（ASR） of symmetric electrolyte-supported LSMCr0.5-xCux/YSZ/LSMCr0.5-xCuxcells was investigated.The obtained LSMCr0.5-xCuxpowders are pure perovskite phase after heat treatment at 1000℃for 5 h.assured by XRD. The size of particle increase with substitution of Cu.The impedance spectra showed that the ASR value of LSMCr0.5-xCux in wet 5%H2-Ar atmosphere was lower compared with pure LSCM.
【Key words】 SOFC； gel-casting； LSCM； Cu substitution； resistance；
- 【会议录名称】 第30届全国化学与物理电源学术年会论文集
- 【会议名称】第30届全国化学与物理电源学术年会
- 【会议时间】2013-07-12
- 【会议地点】中国上海
- 【分类号】TM912
- 【主办单位】中国电子学会化学与物理电源技术分会、中国化学与物理电源行业协会、中国电工技术学会氢能发电装置专业委员会、中国电工技术学会电池专业委员会、化学与物理电源重点实验室