STTR Phase I: High Energy Density Non-aqueous Pseudocapacitors

这个小企业技术转让研究第一阶段项目的更广泛的影响/商业潜力是开发生产高能量密度、低成本伪电容器所需的新型有机材料。活性材料将是用于氧化和还原的单一物质。这一重要特性降低了成本和制造复杂性。活性材料的合成路线短，并且使用商品试剂。能够以每千克5，000瓦的功率提供超过10瓦时/千克的伪电容器将对车辆性能产生重大影响，特别是对于以高功率水平运行的重型车辆，间歇性可再生能源和不间断电源。这些新型赝电容器的低成本和高性能将在美国制造竞技场产生重要的商业影响，因为它们的制造很容易适应为其他有机电气设备设计的现有基础设施。 由于这种活性材料可以作为单一物质被氧化和还原，因此它具有不需要不对称设计的独特优势。当氧化还原活性被限制在溶剂和电解质的电压窗口内的相对窄带时，在电容器中使用不对称或混合设计以增加电压窗口。该系统在氧化和还原半反应之间具有大的电压间隔，而不需要平衡质量，并且不需要制造两个不同的电极。 单一物质的优势结合了对称电池内不对称设计的最佳特性。 该研究小组已经制备出具有高循环稳定性和2.8伏开路电位的材料。我们的目标是证明使用我们的新型有机电活性材料可以显着增加高表面积双层电容器的电容。

The broader impact/commercial potential of this Small Business Technology Transfer Research Phase I project is development of novel organic materials necessary to produce high energy density, low cost pseudocapacitors. The active material will be a single substance for both oxidation and reduction. This important property reduces cost and fabrication complexity. The synthetic route to the active material is short, and makes use of commodity reagents. Pseudocapacitors capable of delivering more than 10 Watt hours per kilogram at 5,000 Watts per kilogram will have significant impact on vehicle performance, especially for the heavy vehicles that operate at high power levels getting started, for intermittent renewable sources, and uninterruptible power supplies. The low cost and high performance in these new pseudocapacitors will have important commercial impact in the US manufacturing arena because their fabrication is readily adapted to the existing infrastructure designed for other organic electrical devices.This project is based on organic compounds with unprecedented voltage and redox stability. Because this active material can be both oxidized and reduced as a single substance, it has the unique advantage of not needing an asymmetric design. Asymmetric or hybrid design is used in capacitors to increase the voltage window when the redox activity is otherwise confined to a relatively narrow band within the voltage window of the solvent and electrolyte. This system has a large voltage separation between the oxidation and reduction half reactions without the need for balancing mass, and without fabrication of two different electrodes. The single substance advantage combines the best properties of the asymmetric design within a symmetric cell. The research group has prepared materials with high cycle stability and open circuit potentials of 2.8 volts. Our goal will be to demonstrate that the use of our novel organic electroactive materials can significantly increase capacitance of high surface area double layer capacitors.