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| Preparation of Three-dimensional Porous Reduced Graphene Oxide Aerogel and Its Application in Lithium-ion Batteries |
| DENG Xiao-mei1, WEN Hao2, ZHANG Chu-hong2, DENG Jian-guo3, GAO Li-zhen1 |
| 1. Environmental Science and Engineering College, Taiyuan University of Technology Science, Taiyuan 030000, China; 2. The State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute, Sichuan University, Chengdu 610065, China; 3. Institute of Chemical Materials, China Academy of Engineering Physics, Mianyang 621900, China |
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Abstract Reduced graphene oxide(rGO) aerogel with a three-dimensional porous monolithic structure was synthesized via self-assembly using L-ascorbic acid as reductant from graphene oxide, which was prepared by a modified Hummers method using natural graphite as starting material. The morphological and structure were characterized by FT-IR, SEM, TEM, XRD and XPS. The electrochemical performances as lithium ion battery anode were tested. The results showed that the rGO aerogel exhibited high specific capacities and a good cyclability, the initial discharge and charge specific capacities reached 1 700 mAh·g-1 and 710 mAh·g-1, respectively, at a current density of 100 mA·g-1. After 100 cycles the reversible discharge specific capacity could still retain at 450 mAh·g-1 along with the coulombic efficiency at 98%.
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Received: 04 March 2015
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2016, Vol. 24 
