Nanostructuring the electronic conducting La_(0.8)Sr_(0.2)MnO_(3-δ) cathode for high-performance in proton-conducting solid oxide fuel cells below 600℃  

通过电子导体阴极La_(0.8)Sr_(0.2)MnO_(3-δ)的纳米化制备高性能质子导体固体氧化物燃料电池（英文）

作　　者：Eman Husni Da'as 毕磊 Samir Boulfrad Enrico Traversa 

机构地区：[1]Division of Physical Science and Engineering, King Abdullah University of Science and Technology (KAUST) [2]Institute of Materials for Energy and Environment, Growing Base for State Key Laboratory, College of Materials Science and Engineering, Qingdao University [3]College of Science & Engineering, Hamad Bin Khalifa University (HBKU) [4]School of Energy Science and Engineering, University of Electronic Science and Technology of China (UESTC)

出　　处：《Science China Materials》2018年第1期57-64,共8页中国科学（材料科学（英文版）

基　　金：supported by the National Natural Science Foundation of China (51602238);the Thousand Talents Plan

摘　　要：Proton-conducting oxides offer a promising electrolyte solution for intermediate temperature solid oxide fuel cells（SOFCs） due to their high conductivity and low activation energy. However, the lower operation temperature leads to a reduced cathode activity and thus a poorer fuel cell performance. La_（0.8）Sr_（0.2）MnO_（3-δ）（LSM） is the classical cathode material for high-temperature SOFCs, which lack features as a proper SOFC cathode material at intermediate temperatures.Despite this, we here successfully couple nanostructured LSM cathode with proton-conducting electrolytes to operate below600℃ with desirable SOFC performance. Inkjet printing allows depositing nanostructured particles of LSM on Y-doped Ba ZrO_3（BZY） backbones as cathodes for proton-conducting SOFCs, which provides one of the highest power output for the BZY-based fuel cells below 600 ℃. This somehow changes the common knowledge that LSM can be applied as a SOFC cathode materials only at high temperatures（above 700 ℃）.质子导体氧化物因其高导电性和低活化能,成为一种很有前途的中温固体氧化物燃料电池(SOFCs)电解质材料.然而,较低的操作温度会降低阴极活性,从而降低燃料电池的性能.La_(0.8)Sr_(0.2)MnO_(3-δ)是一种经典的高温SOFCs阴极材料,但其很多特性不符合中温SOFCs阴极材料的要求.针对这一问题,我们成功将纳米化的LSM阴极和质子导体电解质结合在一起,在600°C下运行,获得了理想的电池性能.喷墨印刷技术可以将LSM的纳米结构粒子构筑在Y-掺杂的BaZrO_3(BZY)骨架上,从而作为质子导体SOFCs的阴极.以此为阴极的单电池成为600°C以下的BZY基燃料电池中输出功率最高的之一.本工作也打破了LSM只能作为高温SOFCs阴极材料(超过700°C)的传统思维局限.

关 键 词：BaZrO3 inkjet printing impregnation La0.8Sr0.2MnO3-δ solid oxide fuel cells 

分 类 号：TM911.4[电气工程—电力电子与电力传动]