Citation:
ZHENG Jia-Fei, ZHENG Ming-Bo, LI Nian-Wu, LU Hong-Ling, QIU Lan, CAO Jie-Ming, JI Guang-Bin. Preparation of Graphene Coated Carbon Nanotube-Sulfur Composite and Its Performance for Lithium-Sulfur Battery[J]. Chinese Journal of Inorganic Chemistry,
;2013, 29(7): 1355-1360.
doi:
10.3969/j.issn.1001-4861.2013.00.218
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To solve the main problems encountered in the lithium-sulfur battery research and practical application, a simple and effective hydrothermal reduction of graphene oxide was employed to encapsulate commercial carbon nanotube-sulfur (CNT-S) nanocomposite in this study, then an effective type of graphene coated CNT-S nanostructure was formed. The polysulphide anions diffusion phenomenon was effectively restrained by the graphene coating structure. The nanocomposites were characterized by X-ray diffraction and scanning electron microscope. The results indicated that elemental sulfur was uniformly distributed across the CNT, and a layer of graphene coated on the surface of CNT-S nanocomposite. The electrochemical test results showed that the graphene coating nanostructure obviously improved the lithium-sulfur battery performance of the CNT-S nanocomposite.
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