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One-step preparation of graphene nanosheets via ball milling of graphite and the application in lithium-ion batteries

Version 2 2024-06-06, 09:44
Version 1 2016-08-11, 16:32
journal contribution
posted on 2024-06-06, 09:44 authored by H Zhu, Y Cao, J Zhang, W Zhang, Y Xu, J Guo, Wenrong YangWenrong Yang, J Liu
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.

History

Journal

Journal of Materials Science

Volume

51

Pagination

3675-3683

Location

Berlin, Germany

ISSN

0022-2461

eISSN

1573-4803

Language

English

Publication classification

C Journal article, C1 Refereed article in a scholarly journal

Copyright notice

2016, Springer

Issue

8

Publisher

SPRINGER