兰州大学机构库 >物理科学与技术学院
Cation substitution of B-site in LaCoO3 for bifunctional oxygen electrocatalytic activities
Jiang, XD(姜兴东)1; Dong, Yucan1; Zhang, Zhengmei1,2; Li, Junfu1; Qian, Jinmei1; Gao, DQ(高大强)1
2021-10-15
Source PublicationJOURNAL OF ALLOYS AND COMPOUNDS
ISSN0925-8388
Volume878
AbstractLaCoO3-based materials are potential electrocatalysts with good activity and stability for the oxygen evolution reaction (OER) and oxygen reduction reaction (ORR). In this study, the cation of the Co site is substituted by Mn in LaCoO3, and samples with the composition LaMnxCo(1-x)O(3) (x = 0, 0.2, 0.4, 0.6, 0.8, and 1.0) are prepared. Electrocatalytic test results show that the electrocatalytic activities of the samples depend on the Mn concentration, and LaMn0.4Co0.6O3 simultaneously exhibits the best OER/ORR performance and stability. X-ray photoelectron spectroscopy results show that the introduction of Mn can significantly increase the content of highly active Mn4+ and Co3+. This result and the increased electrical conductivity evidenced by both, first-principles calculations and charge transfer resistance results, can explain the optimization of the oxygen catalytic activities. This study offers a feasible pathway for optimizing the performance of perovskite oxygen electrocatalysts by cation substitution. (c) 2021 Elsevier B.V. All rights reserved.
KeywordMn doping LaCoO3 Oxygen evolution reaction Oxygen reduction reaction
PublisherELSEVIER SCIENCE SA
DOI10.1016/j.jallcom.2021.160433
Indexed ByEI ; SCOPUS ; SCIE
Language英语
WOS Research AreaChemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectChemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000660477400002
Original Document TypeArticle
Citation statistics
Document Type期刊论文
Identifierhttp://ir.lzu.edu.cn/handle/262010/451982
Collection物理科学与技术学院
Affiliation1.Lanzhou Univ, Key Lab Magnetism & Magnet Mat, Minist Educ, Lanzhou 730000, Peoples R China;
2.Northwest Normal Univ, Coll Phys & Elect Engn, Lanzhou 730070, Peoples R China
First Author AffilicationSchool of Physical Sicence and Technology
Recommended Citation
GB/T 7714
Jiang, Xingdong,Dong, Yucan,Zhang, Zhengmei,et al. Cation substitution of B-site in LaCoO3 for bifunctional oxygen electrocatalytic activities[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2021,878.
APA Jiang, Xingdong,Dong, Yucan,Zhang, Zhengmei,Li, Junfu,Qian, Jinmei,&Gao, Daqiang.(2021).Cation substitution of B-site in LaCoO3 for bifunctional oxygen electrocatalytic activities.JOURNAL OF ALLOYS AND COMPOUNDS,878.
MLA Jiang, Xingdong,et al."Cation substitution of B-site in LaCoO3 for bifunctional oxygen electrocatalytic activities".JOURNAL OF ALLOYS AND COMPOUNDS 878(2021).
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