寻找新的电能存储材料(EES)是当今最活跃的研究领域之一。在用于电化学(超级)电容器的材料方面,大多数工作集中在高表面积碳(HSAC)(表面积超过2000 m 2 g -1)和金属氧化物(例如RuO 2)上。这些材料提供高充电/放电速率,但在金属氧化物(RuO 2)和/或HSAC的低容量(小于10–20 mAh / g)。我们的工作旨在设计具有高比容量和高重量能量及功率密度的材料。导电聚合物由于其以拟电容方式存储电荷的能力以及它们在用作电解质的大多数有机溶剂中的不溶性,因此作为电化学电容器的电极材料具有吸引力。实际上,一些基于导电聚合物材料的器件因其快速的掺杂/去掺杂工艺(例如,聚噻吩)。然而,与无机电池材料相比,这些聚合物材料的容量低,这是因为电化学反应涉及每个单体单元电子的一部分,并且需要大量的支持电解质溶液,这降低了重量容量和能量密度。我们已经合成并充分表征了杂化的有机侧链/导电聚合物复合材料(例如,聚-3
conducting redox polymers based on poly(3,4-ethylenedioxythiophene) (PEDOT) and a hydroquinone pendant group have been synthesized and characterized in an acidic aqueous electrolyte. The polymers were characterized with regards to kinetics, pH dependence, and mass changes during oxidation and reduction, as well as their conductance. Both polymers show redox matching, i.e. the quinone redox reaction occurs
substituted pyridinium triflates and the corresponding pyridine base. This slurry allows the 2e-/2H+ quinone/hydroquinone redox reactions while suppressing proton reduction in the battery cell. By using strong (acidic) proton donors, the formal potential of the quinone redox reactions is tuned into the potential region in which the PEDOT backbone is conductive, thus eliminating the need for conducting additives
Derivatized 3,4-Alkylenedioxythiophene Monomers, Methods of Making Them, and Use Thereof
申请人:Yeisley Shawn
公开号:US20090008609A1
公开(公告)日:2009-01-08
The present invention relates to methods of making derivatized 3,4-alkylenedioxythiophene monomers and methods of using the 3,4-alkylenedioxythiophene monomers.
本发明涉及制备衍生化3,4-烷基二氧杂苯单体的方法以及使用3,4-烷基二氧杂苯单体的方法。
Derivatized 3,4-alkylenedioxythiophene monomers, methods of making them, and use thereof
申请人:E. I. du Pont de Nemours and Company
公开号:US07999121B2
公开(公告)日:2011-08-16
The present invention relates to methods of making derivatized 3,4-alkylenedioxythiophene monomers and methods of using the 3,4-alkylenedioxythiophene monomers.
本发明涉及制备衍生3,4-烷基二氧杂苯单体的方法以及使用3,4-烷基二氧杂苯单体的方法。
Derivatized 3,4-Alkylenedioxythiophene monomers, methods of making them, and use thereof
申请人:E.I. du Pont de Nemours and Company
公开号:US07838688B2
公开(公告)日:2010-11-23
The present invention relates to methods of making derivatized 3,4-alkylenedioxythiophene monomers and methods of using the 3,4-alkylenedioxythiophene monomers.