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Design of pseudocapacitance and amorphization Co-enhanced Mn3O4/graphene sheets nanocomposites for high-performance lithium storage
Li, Bo1; Huang, Xiaomin2; Li, Jianding1; Zhao, Huajun1,3; Yu, Xueqing1; Qin, Qinghao2; Xu, Jincheng1; Lei, Wen1; Feng, Dongyu3; Deng, Yonghong3; Zheng, Jinlong2; Chen, Yuncai3; Wang, Ning2; Shao, Huaiyu1
2021-10-15
Source PublicationApplied Surface Science
ISSN0169-4332
Volume563
AbstractMnO-based materials have been broadly investigated as anode materials for lithium- ion batteries (LIBs) due to their high energy densities, affordable cost, environmental benignity, etc. However, the wide voltage hysteresis due to inferior electronic conductivity and serious volume expansion during lithiation/delithiation seriously restricted their practical applications. In this work, MnO/graphene sheet (MGS) nanocomposites were prepared by a solution reaction assisted calcination method, which led to superior electrochemical performance for LIBs and presented both high reversible capacity and excellent cyclic stability (1199.5 mAh g after 600 cycles and 995.3 mAh g after 1000 cycles at a current density of 500 mA g). The superior cyclic stability could be attributed to the amorphization effect of MnO and strong coupling interaction between MnO and graphene sheets. On one hand, the highly oxidized MnO and increasing Li active sites during extended cycles are beneficial to achieve high specific capacity. Meanwhile, the strong coupling effect, fast pseudocapacitive reaction and amorphous phase effect help provide numerous voids, which effectively alleviate volume expansion and enable excellent cyclic stability, enriching their great opportunities for LIBs anode materials with narrow voltage hysteresis and long cycle life.
KeywordAmorphization Coupling effect Graphene Lithium storage Mn3O4 Pseudocapacitance
DOI10.1016/j.apsusc.2021.150199
URLView the original
Language英語English
Scopus ID2-s2.0-85107296498
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Document TypeJournal article
CollectionUniversity of Macau
Affiliation1.Guangdong-Hong Kong-Macau Joint Laboratory for Photonic-Thermal-Electrical Energy Materials and Devices, Institute of Applied Physics and Materials Engineering, University of Macau, Taipa, Avenida da Universidade, 999078, China
2.Center for Green Innovation, School of Mathematics and Physics, University of Science and Technology Beijing, Beijing, 100083, China
3.Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen, 518055, China
First Author AffilicationINSTITUTE OF APPLIED PHYSICS AND MATERIALS ENGINEERING
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GB/T 7714
Li, Bo,Huang, Xiaomin,Li, Jianding,et al. Design of pseudocapacitance and amorphization Co-enhanced Mn3O4/graphene sheets nanocomposites for high-performance lithium storage[J]. Applied Surface Science,2021,563.
APA Li, Bo,Huang, Xiaomin,Li, Jianding,Zhao, Huajun,Yu, Xueqing,Qin, Qinghao,Xu, Jincheng,Lei, Wen,Feng, Dongyu,Deng, Yonghong,Zheng, Jinlong,Chen, Yuncai,Wang, Ning,&Shao, Huaiyu.(2021).Design of pseudocapacitance and amorphization Co-enhanced Mn3O4/graphene sheets nanocomposites for high-performance lithium storage.Applied Surface Science,563.
MLA Li, Bo,et al."Design of pseudocapacitance and amorphization Co-enhanced Mn3O4/graphene sheets nanocomposites for high-performance lithium storage".Applied Surface Science 563(2021).
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