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Proposed Uses

The hydrogen-organic hybrid flow battery technology offers significant benefits across various sectors:​

Renewable Energy Storage: Provides a scalable solution for storing energy from intermittent sources like solar and wind.​

Grid-Scale Energy Storage: Enhances the stability and reliability of electricity grids by offering cost-effective and efficient energy storage.​

Industrial Applications: Supports large-scale energy storage needs in industries, reducing dependency on fossil fuels.​

Residential Energy Storage: Offers a safe and economical option for home energy storage systems.​

The global market for energy storage systems is expanding rapidly, making this innovation highly valuable for future advancements.

Problem addressed

Energy storage is a critical issue for renewable energy infrastructure due to the intermittent nature of sources like solar and wind. Traditional flow batteries often rely on expensive and toxic metallic electrolytes, which pose challenges in terms of cost, safety, and long-term stability. Additionally, many organic flow batteries suffer from capacity loss due to active material degradation and crossover of active species.​

The hydrogen-organic hybrid flow battery technology addresses these issues by using methylene blue in a high-strength sulfuric acid solution, paired with hydrogen as the anolyte. This approach eliminates the need for metallic electrolytes, reduces costs, and enhances safety. The technology offers excellent stability, high energy density, and efficient performance, overcoming typical limitations of organic-based redox flow batteries. This innovation provides a scalable and economical solution for energy storage, supporting the transition to renewable energy sources.

Technology Overview

The hydrogen-organic hybrid flow battery utilizes methylene blue in a purely aqueous supporting electrolyte, paired with hydrogen at the negative electrode. This innovative design can achieve a theoretical positive electrolyte energy storage capacity of at least 65.40 Ah L-1. The battery demonstrates excellent stability with no loss in capacity over 30 full discharge cycles and a peak power density of 238 mW cm-2. The use of methylene blue, a low-cost and widely available organic dye, in combination with hydrogen, provides a scalable and efficient energy storage system. Experimental data shows that the battery maintains high performance and stability, with round-trip energy efficiency exceeding 76%. The technology offers significant advantages in terms of material cost, stability, crossover management, and energy and power density, making it a promising solution for grid-scale and renewable energy storage applications. We are seeking research collaborations and prospective third-party licensees for this technology.

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