The broader/commercial impact of this Small Business Innovation Research (SBIR) Phase I project lies in its potential to significantly improve the performance, cost, and durability of energy storage systems, which are critical to enabling the widespread adoption of renewable energy. Current long-duration energy storage technologies, such as redox flow batteries, are limited by high operating costs and performance degradation. This project aims to address these issues by developing a new type of advanced membrane using a novel porous material that can enable better selectivity, efficiency, and longevity. If successful, this innovation could lower the total cost of ownership for energy storage systems, enabling utilities and grid operators to store renewable electricity for use when the sun is not shining or the wind is not blowing. The technology is scalable and compatible with continuous manufacturing processes, which supports its eventual commercial deployment. The first market entry point will be long-duration stationary energy storage, with the potential to expand to water treatment and chemical separations. The innovation could enhance U.S. leadership in clean energy technologies, advance grid reliability, and contribute to national efforts in reducing greenhouse gas emissions. It represents a durable competitive advantage in an emerging, fast-growing market. This Small Business Innovation Research (SBIR) Phase I project introduces an innovative manufacturing approach