SBIR Phase I: Functionalized Polysiloxanes for Improved Low Temperature Performance of Supercapacitors

该小型企业创新研究（SBIR）第一阶段项目旨在为电化学电容器或超级电容器开发一种基于官能化聚硅氧烷的电解质系统，该系统在低温下具有高电导率，并在整个温度范围内（-55至95 ℃）提供高功率密度，同时保持低成本。这种官能化的聚硅氧烷将通过具有末端氰基的单官能硅氧烷的缩聚来合成。柔性硅氧烷聚合物主链沿着官能团将在低温下实现高离子电导率并具有降低的挥发性。将在-55至95 ℃的温度范围内对电解质的离子电导率进行评估。超级电容器是汽车应用的理想解决方案，它们可以从制动中吸收能量，并将其释放用于加速，从而在提高效率的同时减少燃料消耗和环境污染。在制动之后的无休止的加速循环使超级电容器成为公共交通列车，地铁和地铁系统的理想选择。在工业电子领域，超级电容器被用于不间断电源、电梯和托盘车。航天、医疗、工业控制和国防应用中的新兴微系统技术需要小体积的集成电源。

This Small Business Innovation Research (SBIR) Phase I project aims to develop a functionalized polysiloxane based electrolyte system for electrochemical capacitors, or supercapacitors, that has high conductivity at low temperatures and provides high power density over the entire temperature range (-55 to 95oC) while maintaining a low cost. This functionalized polysiloxane will be synthesized by condensation polymerization of a mono-functional siloxane with a terminal cyano-group. The flexible siloxane polymer backbone along with the functional groups will enable high ionic conductivity at low temperature with reduced volatility. The electrolyte will be evaluated with respect to ionic conductivity from -55 to 95oC. Supercapacitors are an ideal solution for automotive applications, where they can absorb energy from braking and release it for acceleration, thus reducing fuel consumption and environmental pollution while increasing efficiency. The endless cycles of acceleration followed by braking make supercapacitors ideal for mass transit train, subway, and metro systems. In industrial electronics supercapacitors are being used in un-interruptible power supplies, elevators, and pallet trucks. Emerging microsystem technologies in space, medical, industrial control, and defense applications need integrated power in a small volume.