Ni掺杂Ba_(0.5)Sr_(0.5)(Co_(0.8)Fe_(0.2))_(1−x)Ni_(x)O_(3−δ)质子陶瓷燃料电池阴极的制备及电化学性能研究  

Preparation and Electrochemical Performance of Ni Doped Ba_(0.5)Sr_(0.5)(Co_(0.8)Fe_(0.2))_(1−x)Ni_(x)O_(3−δ)Cathodes for Proton Ceramic Fuel Cells

作　　者：绳阳 周晓亮 刘立敏 何非凡 唐阳 蒋星洲 SHENG Yang;ZHOU Xiaoliang;LIU Limin;HE Feifan;TANG Yang;JIANG Xingzhou(College of Chemistry and Chemical Engineering,Southwest Petroleum University,Chengdu 610000,Sichuan,China)

机构地区：[1]西南石油大学化学化工学院,四川成都610000

出　　处：《陶瓷学报》2024年第3期475-482,共8页Journal of Ceramics

基　　金：国家自然科学基金面上项目(22075231);“氢能技术”国家重点研发计划(2021YFB4001502);四川省重点研发项目(省院省校科技合作)(2021YFSY0022)。

摘　　要：通过镍掺杂策略改善了传统混合离子—电子导电氧化物Ba_(0.5)Sr_(0.5)Co_(0.8)Fe_(0.2)O_(3−δ)(BSCF)在质子陶瓷燃料电池(PCFCs)中的电化学性能。采用溶胶—凝胶法成功制备了Ba_(0.5)Sr_(0.5)(Co_(0.8)Fe_(0.2))_(1−x)Ni_(x)O_(3−δ)系列材料,并研究了Ba_(0.5)Sr_(0.5)(Co_(0.8)Fe_(0.2))_(0.9)Ni_(0.1)O_(3−δ)(BSCFN10)阴极与电解质BaZr_(0.1)Ce_(0.7)Y_(0.2)O_(3−δ)(BZCY)之间的化学相容性和稳定性。通过构建对称电池评估电极的催化活性,结果表明BSCFN10阴极比BSCF具有更优越的催化活性。在700℃下含有3%水蒸气的氢气氛围内,相较于未掺杂的BSCF,BSCFN10阴极的峰值功率密度从380 mW·cm^(-2)提升到503 mW·cm^(-2),极化阻抗从0.21Ω·cm^(2)降低到0.12Ω·cm^(2)。此外,BSCFN10电极在电流密度为0.4 A·cm^(-2)下表现出良好的工作稳定性。实验表明BSCFN10阴极在PCFCs中具有良好的应用性能。The electrochemical performance of conventional mixed ionic-electronic conducting oxides Ba_(0.5)Sr_(0.5)Co_(0.8)Fe_(0.2)O3−δ(BSCF)in proton ceramic fuel cells(PCFCs)has been improved by using nickel doping strategy.A series of Ba_(0.5)Sr_(0.5)(Co_(0.8)Fe_(0.2))_(1−x)Ni_(x)O_(3−δ)samples were synthesized by using sol-gel method.Chemical compatibility and stability between the Ba_(0.5)Sr_(0.5)(Co_(0.8)Fe_(0.2))_(0.9)Ni_(0.1)O_(3−δ)(BSCFN10)cathode and the electrolyte BaZr_(0.1)Ce_(0.7)Y_(0.2)O_(3−δ)(BZCY)were studied,which was used in the PCFCs.Catalytic activity of the electrodes was evaluated by constructing a symmetric cell.It is showed that the BSCFN10 cathode has superior catalytic activity than BSCF.Peak power density of the BSCFN10 cathode was enhanced from 380 mW·cm^(-2)to 503 mW·cm^(-2)and the polarization impedance was reduced from 0.21Ω·cm^(2)to 0.12Ω·cm^(2),as compared with the undoped BSCF within a hydrogen atmosphere containing 3%water vapor at 700℃.In addition,the BSCFN10 electrode exhibited excellent operating stability at a current density of 0.4 A·cm^(-2),showcasing its potential for application in PCFCs.

关 键 词：PCFCs BSCF阴极 过渡金属 镍掺杂 

分 类 号：TQ174.75[化学工程—陶瓷工业]