GDC 3D微通道LSC214/LSC113异质结构中温SOEC材料制备研究  

Research on electrode with LSC214/LSC113 heterostructure based on GDC 3D micro-channel for IT-SOEC

作　　者：娄晓明[1] 王津津 吴智 唐雨晴 LOU Xiaoming;WANG Jinjin;WU Zhi;TANG Yuqing(Research Institute of New Building Materials,Hunan Institute of Technology,Hengyang Hunan 421002,China)

机构地区：[1]湖南工学院新型建筑材料研究院,湖南衡阳421002

出　　处：《电源技术》2022年第8期907-910,共4页Chinese Journal of Power Sources

基　　金：湖南省教育厅重点项目(18A428);湖南省应用特色学科材料科学与工程学科(湘教通[2018]469号);锰酸锂用电解二氧化锰绿色生产与应用湖南省工程研究中心(湘发改委高技[2019]853号);国家自然科学基金(51802093);湖南省自然科学基金(2021JJ40165);湖南省教育厅优秀青年项目(20B161)。

摘　　要：利用Gd_(0.1)Ce_(0.9)O_(1.95)(GDC)相对较好的中温离子电导性,通过冷冻干燥法构建GDC 3D微通道,增加三相反应区;在此基础上利用异质结构的增益作用,通过layer-by-layer(LBL)浸渗法在3D微通道内包覆LaSrCoO_(4)/La_(x)Sr_(1-x)CoO_(3-d)(LSC214/LSC113)异质结构,合成基于GDC的LSC214/LSC1133D微通道中温固体氧化物电解池(solid oxide electrolysis cell,SOEC)氧电极。在此基础上讨论了冷冻干燥的制备温度、以及LBL浸渗法对材料电化学性能的影响,从而明确-70℃冷冻干燥温度为最佳冷冻干燥温度。Using relatively good medium-temperature ionic conductivity of Gd_(0.1)Ce_(0.9)O_(1.95)(GDC),GDC 3D microchannel was constructed by freeze-drying method,which increased TPB and rapid oxygen discharge;using the gain of heterostructure,GDC-based LaSrCoO_(4)/La_(x)Sr_(1-x)CoO_(3-d)(LSC214/LSC113)3D microchannel was compound by layer-by-layer(LBL)infiltration method.Furthermore,the influence of freeze-drying preparation temperature and LBL method on the electrochemical properties of the material were discussed.Thus,the optimum preparation temperature is-70℃.

关 键 词：3D微通道 冷冻干燥法 LSC214/LSC113 异质结构 中温SOEC 

分 类 号：TM911.4[电气工程—电力电子与电力传动]