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

来源：

APPLIED SURFACE SCIENCE | 2020年 / 505卷

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.

引用

页数：9