Pr_(2-x)La_xNiO_(4+δ)基中温SOFC阴极制备与性能研究  

Fabrication and performance of Pr_(2-x)La_xNiO_(4+δ)-based cathode for intermediate temperature solid oxide fuel cells

作　　者：陈松 屠恒勇[1] 李斯琳[1] 余晴春[1] 

机构地区：[1]上海交通大学机械与动力工程学院燃料电池研究所,上海200240

出　　处：《电源技术》2018年第2期219-222,共4页Chinese Journal of Power Sources

基　　金：国家重点基础研究发展计划("973"计划)资助项目(2012CB215404)

摘　　要：采用Pechini方法制备Pr_(2-x)La_xNiO_(4+δ)(x=0,1.5)和Pr_(2-x)La_xNiO_(4+δ)/Ce_(0.8)Gd_(0.2)O_(2-δ)(CGO)两种阴极粉体,并通过X射线衍射光谱法(XRD)等手段对粉体进行表征,结果表明Pr_(2-x)La_xNiO_(4+δ)阴极前驱体在空气中1 150℃退火12 h后能够完全成相。Pr_(2-x)La_xNiO_(4+δ)/CGO(或Pr_(2-x)La_xNiO_(4+δ))和La_(0.6)S r_(0.4)Co O_(3-δ)(LS C)集电层分别沉积在具有CGO阻挡层的半电池上形成单电池,扫描电子显微镜法(SEM)分析发现功能梯度阴极与CGO阻挡层结合良好。以Pr_(2-x)La_xNiO_(4+δ)/CGO(或者Pr_(2-x)La_xNiO_(4+δ))为阴极的单电池性能测试表明,掺杂不同比例CGO以后,电池输出性能均随之而降低,而以Pr_2NiO_(4+δ)为阴极的电池性能达到相应温度下的最高输出性能。The cathode powders of Pr_(2-x)La_xNiO_(4+δ)(x= 0, 1.5) and Pr_(2-x)La_xNiO_(4+δ)/Ce_(0.8)Gd_(0.2)O_(2-δ)(CGO) were prepared by Pechini method. The cathode powders were characterized by XRD. XRD patterns indicate that a single phase of Pr_(2-x)La_xNiO_(4+δ) powders can be formed by annealing of the precursors at 1 150 ℃ for 12 h in the air. The single cells were fabricated by deposition of Pr_(2-x)La_xNiO_(4+δ)(x =0, 1.5)/CGO(or Pr_(2-x)La_xNiO_(4+δ)) and LSC layers on the CGO barrier layer of half cells. SEM analysis shows that the gradient cathodes have good adhesion to the CGO barrier layer. The performance testing results of Pr_(2-x)La_xNiO_(4+δ)/CGO(or Pr_(2-x)La_xNiO_(4+δ))-based single cells indicate that the performance gets worse with the increase of CGO content. The Pr_2NiO_(4+δ)-based cells show the best performance at corresponding temperature.

关 键 词：固体氧化物燃料电池 梯度阴极 Pr2-xLaxNiO4+δ Pr2-LaNiO4+啄/CGO 

分 类 号：TM911.4[电气工程—电力电子与电力传动]