Mesoporous LaMnO3+δ perovskite from spray−pyrolysis with superior performance for oxygen reduction reaction and Zn−air battery |
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Author: | Kuai, Long1,2; Kan, Erjie1,2; Cao, Wei3; |
Organizations: |
1College of Chemistry and Materials Science, The Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecular-Based Materials, Center for Nano Science and Technology, Anhui Normal University. No.1, Beijing East Road, Wuhu 241000, PR China 2School of Biological and Chemical Engineering, Anhui Polytechnic University, Middle Beijing Road, Wuhu 241000, PR China 3Nano and Molecular Systems Research Unit, University of Oulu, P.O. Box 3000, FIN-90014 Oulu, Finland
4Department of Physics, University of Helsinki, PO Box 64, FI-00014 Helsinki, Finland
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Format: | article |
Version: | accepted version |
Access: | open |
Online Access: | PDF Full Text (PDF, 0.9 MB) |
Persistent link: | http://urn.fi/urn:nbn:fi-fe201901303596 |
Language: | English |
Published: |
Elsevier,
2018
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Publish Date: | 2019-11-07 |
Description: |
AbstractOxygen reduction reaction (ORR) is the key reaction in various electrochemical energy devices. This work reports an inexpensive mesoporous LaMnO3+δ perovskite for ORR with remarkable activity, synthesized by a facile aerosol-spray assisted approach. The mesoporous LaMnO3+δ material shows a factor of 3.1 higher activity (at 0.9 V vs. RHE) than LaMnO3 obtained from co-precipitation method (LMO-CP). Based on results of x-ray absorption near-edge spectroscopy (XANES), x-ray photoelectron spectroscopy (XPS) and Brunauer–Emmett–Teller (BET) analysis, we conclude that the chemical state of surface Mn and the high surface area are the sources to the notably enhanced activity. The study of Zn-air batteries device further confirmed a Pt/C comparable performance in the practical devices with the novel mesoporous LaMnO3+δ catalyst, where the power density at 200 mA/cm2 is only 2.1% lower than in the battery with same-loaded Pt/C catalyst. Therefore, the high mass activity and low-cost of Mn/La may make LaMnO3+δ further approach to the application of electrochemical devices. see all
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Series: |
Nano energy |
ISSN: | 2211-2855 |
ISSN-E: | 2211-3282 |
ISSN-L: | 2211-2855 |
Volume: | 43 |
Pages: | 81 - 90 |
DOI: | 10.1016/j.nanoen.2017.11.018 |
OADOI: | https://oadoi.org/10.1016/j.nanoen.2017.11.018 |
Type of Publication: |
A1 Journal article – refereed |
Field of Science: |
114 Physical sciences |
Subjects: | |
Funding: |
This work was supported by the National Natural Science Foundation of China (21271009, 21471006), the Natural Science Foundation of Anhui Provincial Education Department (KJ2017A111), the Programs for Science and Technology Development of Anhui Province (1501021019). W. C. and M. H. acknowledge EU Regional Development Fund and Council of Oulu Region. S. O., T. A., A.-P. H. and S. H. were supported by the Academy of Finland (project 1295696). |
Copyright information: |
© 2017. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/ |
https://creativecommons.org/licenses/by-nc-nd/4.0/ |