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Microstructure and discharge performance of Mg-La alloys as the anodes for primary magnesium-air batteries
Ma, Bingjie1; Tan, Cheng1; Ouyang, Liuzhang1,2; Shao, Huaiyu3; Wang, Naiguang4; Zhu, Min1,2
2022-10-15
Source PublicationJournal of Alloys and Compounds
ISSN0925-8388
Volume918
Abstract

Magnesium alloys are promising anode candidates for energy storage and conversion devices, which give rise to Mg-air batteries as the main development direction of next generation batteries. However, its commercial application still faces giant challenge. In this study, four types of Mg-xLa (La addition of 1, 3, 5, and 10 wt%) alloys with relatively high La content are prepared as anode materials for Mg-air batteries. The influence of La content on the microstructure and electrochemical performance are systematically investigated. All results indicate that adding 5 wt% La to Mg significantly improves the corrosion resistance and discharge activity, whilst excessive addition would accelerate self-corrosion rate due to the formation of large-area LaMg phase. The Mg-5La anode exhibits relatively high discharge platform and stable discharge process, and the specific discharge capacity is 1259.45 mAh g with the anodic efficiency of 57.67% at 20 mA cm. This boost can be explained by the ameliorative microstructure in Mg-5La anode, which reduces the extended self-corrosion of α-Mg phase and accelerates the spalling of corrosion products. This work might provide some basic meaningful data for designing the advanced anode materials for Mg-air batteries.

KeywordElectrochemical Properties Mg-air Batteries Mg-la Binary Alloys Second Phase Microstructure
DOI10.1016/j.jallcom.2022.165803
URLView the original
Indexed BySCIE
Language英語English
WOS Research AreaChemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectChemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000816018100002
Scopus ID2-s2.0-85131666189
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Cited Times [WOS]:1   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionUniversity of Macau
Corresponding AuthorMa, Bingjie
Affiliation1.School of Materials Science and Engineering, Guangdong Provincial Key Laboratory of Advanced Energy Storage Materials, South China University of Technology, Guangzhou, 510641, China
2.China-Australia Joint Laboratory for Energy & Environmental Materials, Key Laboratory of Fuel Cell Technology of Guangdong Province, Guangzhou, 510641, China
3.Joint Key Laboratory of the Ministry of Education, Institute of Applied Physics and Materials Engineering (IAPME), University of Macau, Macao
4.School of Materials and Energy, Guangdong University of Technology, Guangzhou, 510006, China
Recommended Citation
GB/T 7714
Ma, Bingjie,Tan, Cheng,Ouyang, Liuzhang,et al. Microstructure and discharge performance of Mg-La alloys as the anodes for primary magnesium-air batteries[J]. Journal of Alloys and Compounds,2022,918.
APA Ma, Bingjie,Tan, Cheng,Ouyang, Liuzhang,Shao, Huaiyu,Wang, Naiguang,&Zhu, Min.(2022).Microstructure and discharge performance of Mg-La alloys as the anodes for primary magnesium-air batteries.Journal of Alloys and Compounds,918.
MLA Ma, Bingjie,et al."Microstructure and discharge performance of Mg-La alloys as the anodes for primary magnesium-air batteries".Journal of Alloys and Compounds 918(2022).
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