SBIR Phase II: High Surface Area, High-Capacitance Electrochemical Double-Layer Capacitor (EDLC) Electrodes

这个小企业创新研究（SBIR）二期项目将开发高电容电极，该电极结合了高表面积、电双层效应和快速、可逆的法拉第过程。这将通过Ultramet开发并在一期项目中成功演示的独特工艺，将Ru02渗透到高表面积的碳中来实现。最终的结果将是一个结合了碳衬底的高表面积和Ru02的伪电容特性的电极。目前电化学双层电容器（edlc）器件的主要缺点是成本和功率密度。具有最大比电容的EDLC电极材料是氧化钌（Ru02），它来源于钌，一种昂贵的铂族金属。因此，这种电容器的成本相当高。此外，由于电极表面积是电容的关键参数，并且由于目前的技术只允许氧化物电极材料扩散到-120 m2/g的表面积，因此大部分氧化物质量仍未使用。高表面积、高电容电极的优化将在民用和军事领域有许多应用。民用应用包括电动汽车、便携式通信设备、用于大功率激光器的脉冲电源、用于大功率信号产生的突发电源以及用于卫星的功率调节。军事应用包括空间电源调节、激光武器、电子引信、安全和武装装置以及导弹制导系统。

This Small Business Innnovation Research (SBIR) Phase II project will develop high-capacitance electrodes that combine high surface area with the electric double-layer effect and fast, reversible faradaic processes at the electrode. This will be accomplished by infiltrating high surface area carbons with Ru02, via a unique process developed at Ultramet and successfully demonstrated in the Phase I project. The net result will be an electrode combining the high surface area of the carbon substrate with the pseudocapacitance properties of Ru02. The primary drawbacks of current electrochemical double-layer capacitor (EDLCs) devices are cost and power density. The EDLC electrode material that allows for the greatest specific capacitance is ruthenium oxide (Ru02), which is derived from ruthenium, an expensive platinum group metal. The cost of such capacitors is therefore quite high. Furthermore, because electrode surface area is a key parameter for capacitance, and because current technology only allows dispersal of the oxide electrode material to surface areas of -120 m2/g, the bulk of the oxide mass remains unused.The optimization of high surface area, high-capacitance electrodes will have many applications in both the civilian and military sectors. Civilian applications include electric automobiles portable communications equipment, pulse power supplies for high-power lasers, burst power for high-power signal generation, and power conditioning for satellites. Military applications include space power conditioning, laser weaponry, electronic fuzes, safety and arming devices, and missile guidance systems.