中温固体氧化物电解池氧电极材料性能  

Properties of oxygen electrodematerials in medium temperature solid oxide electrolytic cell

作　　者：于吉 赵爽 王敏 郑杰 王晓妍 YU Ji;ZHAO Shuang;WANG Min;ZHENG Jie;WANG Xiaoyan(College of Physical Science and Technology, Shenyang Normal University, Shenyang 110034, China)

机构地区：[1]沈阳师范大学物理科学与技术学院,沈阳110034

出　　处：《沈阳师范大学学报（自然科学版）》2020年第1期28-31,共4页Journal of Shenyang Normal University:Natural Science Edition

基　　金：国家自然科学基金青年科学基金项目(11704264)。

摘　　要：钙钛矿结构ABO3型氧化物Ba0.5Sr0.5Co0.8Fe0.2O3-δ(BSCF)具备优异的氧催化活性与透氧性能,是SOFC中常用的阴极材料。在此基础上,本研究尝试将BSCF直接用于SOEC中,为验证此方式是否可行,本研究制备了阴极材料并对其进行了XRD及SEM测试,煅烧后的BSCF粉体已成相且结构疏松多孔,满足SOEC对氧电极的要求,组装了单电池(NiO-SDC)|YSZ|BSCF进行测试,在电化学工作站800℃的测试温度下,SOEC的极化电阻约为1.80Ω·cm^2;开路电压为1.01 V;在1.5 V电压下电解电流密度为0.175 A·cm^-2;由此计算得出其产氢速率为73.15 mL·cm^-2h。因此BSCF是SOEC中一种良好的氧电极材料。The perovskite structure ABO3 oxide Ba0.5Sr0.5Co0.8Fe0.2O3-δ(BSCF)has excellent oxygen catalytic activity and oxygen permeability.It is a common cathode material in SOFC.On this basis,BSCF was directly applied to SOEC.To verify the feasibility of this method,the cathode materials were prepared and tested by XRD and SEM.The sintered BSCF powder has formed phase and porous structure,which meets the requirements of SOEC for oxygen electrode.Assembled a single cell(NiO-SDC)|YSZ|BSCF were tested.Under the test temperature of 800℃in electrochemical workstation,the polarization resistance of SOEC is about 1.80Ω·cm^2;the open circuit voltage is 1.01 V;the electrolysis current density is 0.175 A·cm^-2 at 1.5 V;the hydrogen production rate is 73.15 mL·cm^-2h.So we come to a conclusion that BSCF is a good oxygen electrode material in SOEC.

关 键 词：中温固体氧化物电解池 氧电极 BSCF 电化学性能 

分 类 号：O469[理学—凝聚态物理] TB34[理学—电子物理学]