[1]邱文文,刘 璞,李翱飞,等.Cu掺杂La0.5Ba0.5CoO3- δ阴极材料动力学性能研究[J].江西师范大学学报(自然科学版),2023,(02):133-138+147.[doi:10.16357/j.cnki.issn1000-5862.2023.02.03]
　QIU Wenwen,LIU Pu,LI Aofei,et al.The Study on Kinetic Properties of Cu-Doped La0.5Ba0.5CoO3-δ Cathode Materials[J].Journal of Jiangxi Normal University:Natural Science Edition,2023,(02):133-138+147.[doi:10.16357/j.cnki.issn1000-5862.2023.02.03]
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Cu掺杂La0.5Ba0.5CoO3- δ阴极材料动力学性能研究()
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《江西师范大学学报》（自然科学版）[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2023年02期
页码:
133-138+147
栏目:
出版日期:
2023-03-25

文章信息/Info

Title:
The Study on Kinetic Properties of Cu-Doped La0.5Ba0.5CoO3-δ Cathode Materials
文章编号:
1000-5862(2023)02-0133-06
作者:
邱文文; 刘 璞; 李翱飞; 王盛琳; 蒋 龙*; 裴启明*
(长江大学物理与光电工程学院,湖北 荆州 434023)
Author(s):
QIU Wenwen; LIU Pu; LI Aofei; WANG Shenglin; JIANG Long*; PEI Qiming*
(School of Physics and Optoelectronic Engineering,Yangtze University,Jingzhou Hubei 434023,China)
关键词:
阴极材料;  钙钛矿;  氧空位;  氧还原反应;  动力学
Keywords:
cathode material;  perovskite;  oxygen vacancy;  oxygen reduction reaction;  dynamics
分类号:
O 211.67
DOI:
10.16357/j.cnki.issn1000-5862.2023.02.03
文献标志码:
A
摘要:
利用溶胶-凝胶法制备了钙钛矿结构La0.5Ba0.5Co1-xCuxO3-δ(LBCC-x,0≤x≤0.4)氧化物,系统地研究了Cu部分取代Co对LBCC-x阴极材料的晶体结构、电导率和电化学性能的影响.研究结果表明:Cu掺杂La0.5Ba0.5CoO3-δ增加了晶格体积和氧空位浓度,降低了电极材料的电导率.Cu部分替代Co有效改善了LBCC-x阴极材料的电化学性能.当温度为750 ℃时极化阻抗为0.043 Ω·cm-2,La0.5Ba0.5Co0.7Cu0.3O3-δ,(LBCC3)表现出最优的氧还原反应活性.弛豫时间分布(DRT)分析表明,气体扩散是LBCC-x阴极材料电催化动力学性能的速率限制步骤.
Abstract:
La0.5Ba0.5Co1-xCuxO3-δ(LBCC-x,0≤x≤0.4)oxide with perovskite structure is prepared by sol-gel method.The crystal structure,electrical conductivity and electrochemical performance of LBCC-x cathode material are systematically studied.The results show that Cu doped La0.5Ba0.5CoO3-δ increases the lattice volume and oxygen vacancy concentration,and decreases the conductivity of electrode materials.Cu partial substitution for Co effectively improves the electrochemical performance of LBCC-x cathode material.La0.5Ba0.5Co0.7Cu0.3O3-δ(LBCC3)exhibits the best oxygen reduction reaction activity,and the polarization resistance is 0.043 Ω·cm-2 at 750 ℃.Gas diffusion is the rate-limiting step of electrocatalytic activity of LBCC-x cathode materials.

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备注/Memo

备注/Memo:
收稿日期:2022-10-09
基金项目:国家自然科学基金(11605014)和湖北省自然科学基金(2017CFB576)资助项目.
通信作者:蒋 龙(1977—),男,湖北钟祥人,副教授,博士,主要从事新能源材料的研究.E-mail:jianglong@yangtzeu.edu.cn
裴启明(1977—),女,湖北松滋人,教授,博士,主要从事理论物理研究.E-mail:qmpei@yangtzeu.edu.cn
更新日期/Last Update: 2023-03-25