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期刊名称: Chemistry – A European Journal
Volume:23    Issue:51        Page:12613-12619
ISSN:0947-6539

Confined Sulfur in 3 D MXene/Reduced Graphene Oxide Hybrid Nanosheets for Lithium–Sulfur Battery期刊论文

作者: Bao Weizhai Xie Xiuqiang Xu Jing Guo Xin Song Jianjun
DOI:10.1002/chem.201702387

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页码: 12613-12619
期刊名称: Chemistry – A European Journal
ISSN: 0947-6539
卷期: Volume:23    Issue:51
语言: English
摘要: Three‐dimensional metal carbide MXene/reduced graphene oxide hybrid nanosheets are prepared and applied as a cathode host material for lithium–sulfur batteries. The composite cathodes are obtained through a facile and effective two‐step liquid‐phase impregnation method. Owing to the unique 3 D layer structure and functional 2 D surfaces of MXene and reduced graphene oxide nanosheets for effective trapping of sulfur and lithium polysulfides, the MXene/reduced graphene oxide/sulfur composite cathodes deliver a high initial capacity of 1144.2 mAh g−1 at 0.5 C and a high level of capacity retention of 878.4 mAh g−1 after 300 cycles. It is demonstrated that hybrid metal carbide MXene/reduced graphene oxide nanosheets could be a promising cathode host material for lithium–sulfur batteries. Composite cathodes: Metal carbide MXene/reduced graphene oxide hybrid nanosheets are applied as cathode host materials for lithium–sulfur batteries. With their unique 3 D layer structure and functional 2 D surfaces for the effective trapping of sulfur and lithium polysulfides, the composite cathodes deliver a high initial capacity (1144.2 mAh g−1 at 0.5 C) and excellent capacity retention (878.4 mAh g−1 after 300 cycles), so are promising candidates for application in lithium–sulfur batteries (see figure).
相关主题: lithium–sulfur batteries, electrochemistry, polysulfide immobilization, graphene,

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