SBIR Phase I: Advanced Carbon Electrodes to Reduce Ultracapacitor Size and Cost

这个小型企业创新研究（SBIR）第一阶段项目将显著提高NGV应用的超级电容器的能量密度并降低制造成本。目前，电池电压的限制限制了能量密度，并增加了高压超级电容器所需的电池数量。将修改多孔碳电极材料的组成以调整开路电位，从而提高电池电压。阳极稳定的电解质将被研究以进一步提高电池电压。目标是将电池电压从目前商用碳基超级电容器的2.5 V提高到3.6 V。由于能量密度以2v为尺度，3.6 V电池的能量密度将增加一倍以上。这一增长还将通过减少高压设备中30%的电池数量来降低制造成本。原型电容器电池将准备和评估，以确定电池电压窗口。延长充电/放电和恒电位测量将确保增加的电池电压是持续的。在重量、峰值功率和电池寿命是关键因素的应用中，超级电容器可以补充或取代电池。商业应用包括蜂窝电话，电源调节（UPS），机电致动器和传统或下一代车辆。

This Small Business Innovation Research (SBIR) Phase I Project will significantly increase the energy density and reduce the manufacturing cost of ultracapacitors for NGV applications. Cell voltage constraints presently limit the energy density and increase the number of cells required for high voltage ultracapacitors. The composition of porous carbon electrode materials will be modified to adjust the open circuit potential, thereby increasing the cell voltage. Anodically stable electrolytes will be investigated to furtherincrease cell voltage. The objective is to increase cell voltage to 3.6 V versus 2.5 V typical for present commercial carbon-based ultracapacitors. Since energy density scales with 2 V, 3.6 V cells would more than double the energy density. This increase would also reduce manufacturing cost by reducing the number of cells in high voltage devices by 30%. Prototype capacitor cells will be prepared and evaluated to determine the cell voltage window. Extended charge/discharge and constant potential measurements will be made to assure that the increased cell voltage is sustained.Ultracapacitors complement or replace batteries in applications where weight, peak power, and battery life are key factors. Commercial applications include cellular phones, power conditioning (UPS),electromechanical actuators, and conventional or next generation vehicles.