CeO_(2)@La_(0.6)Sr_(0.4)Co_(0.2)Fe_(0.8)O_(3)-δ电解质的制备及半导体离子燃料电池性能研究  

Preparation of CeO_(2)@La_(0.6)Sr_(0.4)Co_(0.2)Fe_(0.8)O_(3)-δelectrolyte and its property in semiconductor ionic fuel cells performance

作　　者：刘彦贝 王若名 刘娟 Taimoor Raza 陆玉正 Rizwan Raza 朱斌 李松波[5] 安胜利[6] 云斯宁[1] LIU Yanbei;WANG Ruoming;LIU Juan;Taimoor Raza;LU Yuzheng;Rizwan Raza;ZHU Bin;LI Songbo;AN Shengli;YUN Sining(School of Materials Science and Engineering,Xi’an University of Architecture and Technology,Xi’an 710055,Shaanxi,China;School of Electronic Engineering,Nanjing Xiaozhuang University,Nanjing 211171,Jiangsu,China;Department of Physics,COMSATS University Islamabad,Lahore 54000,Pakistan;School of Energy and Environment,Southeast University,Nanjing 210096,Jiangsu,China;School of Chemistry and Chemical Engineering,Inner Mongolia University of Science and Technology,Baotou 014010,Inner Mongolia,China;School of Materials Science and Engineering,Inner Mongolia University of Science and Technology,Baotou 014010,Inner Mongolia,China)

机构地区：[1]西安建筑科技大学材料科学与工程学院,陕西西安710055 [2]南京晓庄学院电子工程学院,江苏南京211171 [3]伊斯兰堡COMSATS大学物理系,巴基斯坦拉合尔54000 [4]东南大学能源与环境学院,江苏南京210096 [5]内蒙古科技大学化学与化工学院,内蒙古包头014010 [6]内蒙古科技大学材料科学与工程学院,内蒙古包头014010

出　　处：《化工学报》2025年第3期1353-1362,共10页CIESC Journal

基　　金：国家自然科学基金项目(51672208);陕西省自然科学基金重点项目(2019JZ⁃20);陕西省重点研发计划国际合作重点项目(2019KWZ⁃03);陕西省重点科技创新团队(2022TD⁃34);国家自然科学基金面上项目(51772080)。

摘　　要：开发高离子电导率的电解质对于提升半导体离子燃料电池(SIFC)在中低温下的电化学性能至关重要。为此,采用溶剂热法制备核-壳结构CeO_(2)@La_(0.6)Sr_(0.4)Co_(0.2)Fe_(0.8)O_(3)-δ(CeO_(2)@LSCF)复合电解质材料,通过对其物相信息、微观形貌及价态演变进行分析,进一步将其作为SIFC电解质测试其电化学性能和燃料电池性能,研究核-壳结构异质界面电荷传输及内建电场作用机理。结果表明:550℃时,CeO_(2)@LSCF作为燃料电池的电解质,在1.08 V开路电压下,获得942.2 mW·cm^(-2)的最大输出功率密度。作为混合离子和电子导体的SIFC电解质材料,核-壳结构CeO_(2)@LSCF具有潜在的应用前景。Developing electrolytes with high ionic conductivity is crucial to improve the electrochemical performance of semiconductor ion fuel cells(SIFC)at medium and low temperatures.In this study,a solvothermal method was employed to synthesize a core-shell structured CeO_(2)@La_(0.6)Sr_(0.4)Co_(0.2)Fe_(0.8)O_(3)-δ(CeO_(2)@LSCF)composite electrolyte material.The phase information,microstructure,and valence state evolution of the material were analyzed.Moreover,its electrochemical performance and fuel cell properties were systematically investigated when used as an electrolyte in SIFCs.The charge transfer mechanism and the role of the built-in electric field at the core-shell heterojunction interface were also examined.The experimental results demonstrated that at 550℃,the CeO_(2)@LSCF electrolyte exhibited a maximum power density of 942.2 mW·cm^(-2)at an open circuit voltage of 1.08 V.As a mixed ion and electron conductor in SIFC electrolyte materials,the core-shell structured CeO_(2)@LSCF holds great potential for future applications.

关 键 词：复合材料 燃料电池 电解质 核-壳结构 内建电场 异质结 

分 类 号：O611.62[理学—无机化学]