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

这个小企业创新研究（SBIR）第一阶段项目将显着提高NGV应用超级电容器的能量密度并降低其制造成本。 电池电压约束目前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。多孔碳电极材料的组成将被修改以调节开路电位，从而提高电池电压。 将研究阳极稳定电解质以进一步提高电池电压。 目标是将电池电压增加到3.6 V，而目前商用碳基超级电容器的典型电压为2.5 V。 由于能量密度以2 V为尺度，因此3.6 V电池将使能量密度增加一倍以上。 这种增加还将通过将高压设备中的电池数量减少30%来降低制造成本。 将制备原型电容器电池并进行评估，以确定电池电压窗口。 将进行长时间的充电/放电和恒电位测量，以确保电池电压的持续增加。在重量、峰值功率和电池寿命是关键因素的应用中，超级电容器可补充或替代电池。 商业应用包括蜂窝电话、电力调节（UPS）、机电致动器和常规或下一代车辆。

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.