Dual functional MoS2/graphene interlayer as an efficient polysulfide barrier for advanced lithium-sulfur batteries
作者： Pengqian Guo , Dequan Liu , Zhengjiao Liu , Xiaonan Shang , Qiming Liu
DOI: 10.1016/J.ELECTACTA.2017.10.003
关键词: Chemical engineering 、 Graphene 、 Materials science 、 Electrochemistry 、 Cathode 、 Current collector 、 Polysulfide 、 Composite number 、 Lithium 、 Sulfur utilization 、 Nanotechnology
摘要: Abstract A dual functional interlayer consisted of composited two-dimensional MoS 2 and graphene has been developed as an efficient polysulfide barrier for lithium-sulfur batteries (LSBs). With such a configuration, LSBs show superior rate capacity improved cycling capacity. The excellent electrochemical performance can be attributed to the strong bonding interactions between /graphene formed lithium polysulfides (LiPSs) well good electrical conductivity composite. physically block LiPSs by nanosheets chemically suppress dissolution polar nanoflowers. Such further provides contact with surface sulfur cathode, acts upper current collector greatly improves utilization capability LSBs.
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