One-step preparation of graphene nanosheets via ball milling of graphite and the application in lithium-ion batteries
An improved method for mass production of good-quality graphene nanosheets (GNs) via ball milling pristine graphite with dry ice is presented. We also report the enhanced performance of these GNs as working electrode in lithium-ion batteries (LIBs). In this improved method, the decrease of necessary...
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Published in | Journal of materials science Vol. 51; no. 8; pp. 3675 - 3683 |
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Main Authors | , , , , , , , |
Format | Journal Article |
Language | English |
Published |
New York
Springer US
01.04.2016
Springer Springer Nature B.V |
Subjects | |
Online Access | Get full text |
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Summary: | An improved method for mass production of good-quality graphene nanosheets (GNs) via ball milling pristine graphite with dry ice is presented. We also report the enhanced performance of these GNs as working electrode in lithium-ion batteries (LIBs). In this improved method, the decrease of necessary ball milling time from 48 to 24 h and the increase of Brunauer–Emmett–Teller surface area from 389.4 to 490 m²/g might be resulted from the proper mixing of stainless steel balls with different diameters and the optimization of agitation speed. The as-prepared GNs are investigated in detail using a number of techniques, such as scanning electron microscope, atomic force microscope, high-resolution transmission electron microscopy, selected area electron diffraction, X-ray diffractometer, and Fourier transform infrared spectroscopic. To demonstrate the potential applications of these GNs, the performances of the LIBs with pure Fe₃O₄ electrode and Fe₃O₄/graphene (Fe₃O₄/G) composite electrode were carefully evaluated. Compared to Fe₃O₄-LIBs, Fe₃O₄/G-LIBs exhibited prominently enhanced performance and a reversible specific capacity of 900 mAh g⁻¹ after 5 cycles at 100 and 490 mAh g⁻¹ after 5 cycles at 800 mA g⁻¹. The improved cyclic stability and enhanced rate capability were also obtained. |
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Bibliography: | http://dx.doi.org/10.1007/s10853-015-9655-z ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 0022-2461 1573-4803 |
DOI: | 10.1007/s10853-015-9655-z |