Journal
ELECTROCHIMICA ACTA
Volume 174, Issue -, Pages 762-769Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2015.06.041
Keywords
Thermal Exfoliation; Graphene; Oxygen-containing Functional Groups; Lithium Ion Batteries; Cathode Materials
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Funding
- Tianjin Municipal Natural Science Foundation of China [14JCZDJC32200, 13JCZDJC33900]
- Open Project of Key Laboratory of Functional Inorganic Material Chemistry (Heilongjiang University)
- Ministry of Education of China
- Academic Innovation Funding of Tianjin Normal University [52XC1404]
- LPMT
- CAEP [KF14006]
- Training Plan of Leader Talent of University in Tianjin
- Scientific Research Foundation for Returned Overseas Chinese Scholars of State Education Ministry
- Thousand Youth Talents in Tianjin of China
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Exploring high performance and environment-friendly electrode materials is highly desirable for the sustainable Li-ion batteries (LIBs) system. In this study, a facile approach of the modified Hummers' method combining with special thermal reduction was proposed to synthesize nanostructured reduced graphene oxide (RGO) with abundant oxygen-containing functional groups. The resultant RGO showed high specific capacity and excellent cyclability as cathode materials for LIBs. The specific capacity of about 220 mAh g(-1) at a current density of 50 mA g(-1) was achieved after 100 cycles. More importantly, it was demonstrated that the capacity increased with the increase of the amount of oxygen functional groups, highlighting the significant effects of oxygen-containing functional groups of RGO on high lithium storage performance. (C) 2015 Elsevier Ltd. All rights reserved.
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