SBIR Phase I: Multilayer Ceramic Electrolyte Membrane (ML-CEM) for a sodium metal-chloride electrochemical cell

该小型企业创新研究（SBIR）第一阶段项目旨在确认一种新颖的独立式纳米结构多层陶瓷电解质膜（ML-CEM）设计的性能。 ML-CEM将由阳极氧化铝（AAO）膜以气相法生产。Na+传导性ML-CEM具有提供所需结构强度的开孔α-氧化铝层，以及允许钠离子轻松传输的致密、无孔、纳米至微米厚的钠-氧化铝层。钠-氧化铝层的低厚度将为钠基电化学电池在室温或甚至低于室温下的操作提供足够的离子电导率，并且将在200 ℃以上表现出上级离子电导率。因此，基于ML-CEM的电化学电池将表现出高能量和高功率密度以及宽的工作温度范围，使钠电池成为许多固定和车辆储能应用中的可行选择。 该项目更广泛的影响/商业潜力是ML-CEM将实现低成本电化学电池设计。在固定应用中，分布式、模块化和可扩展的基于ML-CEM的钠电池将允许电力公司将电网操作从峰值功率转移到系统能量。这将导致国家的利用率提高？的电网资产，允许整合波动的可再生能源，使微电网电力架构，以提高电力分配的稳定性和可靠性，并最大限度地减少连锁停电的风险。此外，负担得起的零排放电动汽车的普及将得到高能量/高功率ML-CEM电池的支持。它们的坚固性和安全性，以及它们的高日历和循环寿命比今天有了显着的改善。电动汽车电池。

This Small Business Innovation Research (SBIR) Phase I project aims to confirm the performance of a novel, freestanding, nano-structured, multilayered ceramic electrolyte membrane (ML-CEM) design. The ML-CEM will be produced from an anodic aluminum oxide (AAO) membrane in a vapor phase method. The Na+ conductive ML-CEM has an open-porous á-alumina layer providing the required structural strength, and a dense, non-porous, nano- to micrometer thick sodium â-alumina layer allowing facile sodium ion transport. The low thickness of the sodium â-alumina layer will provide sufficient ion-conductivity for an operation of the sodium-based electrochemical cell at, or even below, room temperature, and will exhibit superior ion-conductivity above 200 °C. Therefore, the ML-CEM based electrochemical cells will exhibit high energy and high power densities and a wide operating temperature range, making sodium batteries to become a viable option in many stationary and vehicle energy storage applications. The broader impact/commercial potential of this project is that ML-CEM will enable low cost electrochemical cell designs. In a stationary application distributed, modular and scalable ML-CEM based sodium batteries will allow electric utilities to shift the power grid operation from peak-power to system energy. This will lead to an improved utilization of the nation?s power grid assets, allows the integration of fluctuating renewable energy sources, enables micro-grid power architecture to improve the stability and reliability of the electric power distribution, and minimizes the risk of cascading power outages. Furthermore, the proliferation of affordable, zero-emission electric vehicles will be supported by high-energy / high-power ML-CEM based batteries. Their robustness and safety, as well as their high calendar and cycle life are providing a significant improvement over today?s electric vehicle batteries.