Enhanced capacity and significant rate capability of Mn3O4/reduced graphene oxide nanocomposite as high performance anode material in lithium-ion batteries

被引:40
作者
Weng, Shao-Chieh [1 ]
Brahma, Sanjaya [1 ,4 ]
Huang, Po-Chia [1 ,5 ]
Huang, Yong-Cun [1 ]
Lee, Yu-Hsuan [1 ]
Chang, Chia-Chin [2 ]
Huang, Jow-Lay [1 ,3 ,4 ]
机构
[1] Natl Cheng Kung Univ, Dept Mat Sci & Engn, Tainan 701, Taiwan
[2] Natl Univ Tainan, Dept Greenergy, Tainan 701, Taiwan
[3] Natl Cheng Kung Univ, Ctr Micronano Sci & Technol, Tainan 70101, Taiwan
[4] Natl Cheng Kung Univ, Hierarch Green Energy Mat Hi GEM Res Ctr, Tainan 70101, Taiwan
[5] Natl Synchrotron Radiat Res Ctr, Expt Facil Div, Xray Scattering Grp, Hsinchu 101, Taiwan
关键词
Li ion batteries; Mn3O4/rGO nanocomposite; Anode material; Chemical synthesis; Energy storage; IMPROVED REVERSIBLE CAPACITY; ELECTROCHEMICAL PROPERTIES; EXCELLENT PERFORMANCE; MN3O4; NANOPARTICLES; SODIUM-BOROHYDRIDE; CYCLIC STABILITY; FACILE SYNTHESIS; LI-STORAGE; CO; NANOCRYSTALS;
D O I
10.1016/j.apsusc.2019.144629
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
We report enhanced capacity, significant rate capability of Mn3O4 microsheet and reduced graphene oxide (Mn3O4/rGO) nanocomposite as high performance anode material in lithium ion battery. The Mn3O4/rGO nanocomposite prepared by a facile, low temperature chemical reduction procedure has achieved superior capacity of similar to 677 mAh g(-1) (current rate = 123 mA g(-1)) after 150 charge/discharge cycles (retention = 85%) and appreciable rate capability of 640 mAh g(-1) @1.2 A g(-1). The comparative investigation reveals the distinguished electrochemical performance of Mn3O4/rGO as compared with MnO2/rGO, MnO2 and graphene oxide. Lithium ion diffusion coefficient of Mn3O4/rGO (2.4 x 10(-1) m(2) s(-1)) is higher than MnO2/rGO, MnO2 and graphene oxide that facilitates the smooth passage of Li ions in the composite delivering noticeable electrochemical performance. Mn3O4/rGO is synthesized by the simple chemical reduction of MnO2 nanorod/rGO nanocomposite and the procedure can be extended for the synthesis of other potentially useful, simple/complex metal oxides (varying shape and size) as anode materials in lithium ion batteries.
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页数:9
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