锂硫电池正极复合材料研究进展

从两个方面综述了锂硫电池正极复合材料的研究进展:一方面为含硫复合材料,它包括硫/碳、硫/纳米金属氧化物及硫/聚合物复合材料;另一方面为正极所含的粘结剂,它包括聚环氧乙烯(PEO)、聚偏氟乙烯(PVDF)、水溶性聚合物(LA)、白明胶(gelatin)等。此外,针对锂硫电池存在的问题,对后续研究作了展望,提出选择具有多孔结构和良好导电性的碳材料是提升锂硫电池性能的关键因素;同时具有良好粘结性能、高的导电性能及优异化学稳定性的黏结剂也对锂硫电池性能的提升发挥重要作用。

Research progress of cathode composite materials of lithium/sulfur batteries

This article summarizes the research progress of the cathode composite materials of lithium/ sulfur batteries from two aspects.The first aspect is the research progress of sulfur-containing composite materials which include sulfur/carbon materials,sulfur/nanosized metallic oxides and sulfur/polymer materials.Another aspect is the binding materials in the cathode.These binders include PEO,PVDF,LA and gelatin.Moreover,this article has given the expectation of the research on lithium/sulfur batteries with the goal of solving the existing problems.Carbon materials with porous structure and good electrical conductivity are thought to be the key factor in enhancing the electrical property of lithium/sulfur batteries.At the same time,binders with good sticking performance,electrical conductivity and chemical stability play an important role in promoting the electrical performance of lithium/sulfur batteries.