Defect-enhanced performance of a 3D graphene anode in a lithium-ion battery

Guo, Hongchen1; Long, Deng1; Zheng, Zongmin1; Chen, Xinyi1; Ng, Alan M. C.2; Lu, Miao1

2017-12-15

10.1088/1361.6528/aa98f8

NANOTECHNOLOGY   影响因子和分区

0957-4484

1361-6528

Morphological defects were generated in an undoped 3D graphene structure via the involvement of a ZnO and Mg(OH) (2) intermediate nanostructure layer placed between two layers of vapor-deposited graphene. Once the intermediate layer was etched, the 3D graphene lost support and shrank; during this process many morphological defects were formed. The electrochemical performance of the derived defective graphene utilized as the anode of a lithium (Li)-ion battery was significantly improved from similar to-382 mAh g(-1) to similar to 2204 mAh g(-1) at 0.5 A g(-1) compared to normal 3D graphene. The derived defective graphene exhibited an initial capacity of 1009 mAh g(-1) and retention of 83% at 4 A g(-1) for 500 cycles, and similar to 330 mAh g(-1) at a high rate of 20 A g(-1) . Complicated defects such as wrinkles, pores, and particles formed during the etching of the intermediate layer, were considered to contribute to the improvement of the electrochemical performance.

graphene defects battery

SCI ; EI

英语

通讯

Young Teachersapos; Education and Research Project of the Department of Education of Fujian Province[JA14007]

Science & Technology - Other Topics ; Materials Science ; Physics

Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied

WOS:000415958100001

IOP PUBLISHING LTD

20174904484651

Anodes ; Defects ; Graphene ; II-VI semiconductors ; Magnesium compounds ; Zinc oxide

Electron Tubes:714.1 ; Nanotechnology:761 ; Chemical Products Generally:804 ; Inorganic Compounds:804.2 ; Materials Science:951

MATERIALS SCIENCE

Web of Science

1.Xiamen Univ, Pen Tung Sah Inst Micronano Sci & Technol, Xiamen, Peoples R China
2.South Univ Sci & Technol China, Dept Phys, Shenzhen, Peoples R China

Guo, Hongchen,Long, Deng,Zheng, Zongmin,et al. Defect-enhanced performance of a 3D graphene anode in a lithium-ion battery[J]. NANOTECHNOLOGY,2017,28(50).

Guo, Hongchen,Long, Deng,Zheng, Zongmin,Chen, Xinyi,Ng, Alan M. C.,&Lu, Miao.(2017).Defect-enhanced performance of a 3D graphene anode in a lithium-ion battery.NANOTECHNOLOGY,28(50).

Guo, Hongchen,et al."Defect-enhanced performance of a 3D graphene anode in a lithium-ion battery".NANOTECHNOLOGY 28.50(2017).