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Green Hydrogen H2 News

Japanese Researchers Revolutionize Ammonia Storage for Hydrogen Extraction

Anela DoksoBy Anela Dokso10/07/20233 Mins Read
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Researchers at Japan’s RIKEN Center for Emergent Matter Science have made a groundbreaking discovery in the field of hydrogen storage.

They have identified a perovskite compound that enables the safe storage and extraction of ammonia, a crucial hydrogen carrier. This innovative method offers a cost-effective and energy-efficient alternative to traditional storage methods, with the potential to contribute to a decarbonized society. In addition, the compound’s ability to change color during the storage process opens up possibilities for the development of color-based ammonia sensors. This article delves into the goals, technology, potential impact, and challenges surrounding this remarkable research.

Ammonia, known for its lower volatility and ease of storage compared to hydrogen, poses challenges in terms of transportation and storage as a gas. However, the discovery of ethylammonium lead iodide (EAPbI3), a perovskite compound, has revolutionized ammonia storage. When exposed to ammonia at room temperature, EAPbI3 undergoes a chemical reaction, transforming into a two-dimensional layered structure that securely stores the ammonia within its matrix.

What sets this method apart is not only the efficient storage of ammonia but also the ease of extraction. By gently heating the compound, the stored ammonia can be retrieved. This extraction process is significantly more energy-efficient than conventional methods. Additionally, the perovskite compound can revert to its original structure after extraction, allowing for repeated storage and extraction cycles.

The perovskite compound’s NH3 uptake capacity, estimated at 10.2 mmol g–1, offers promising storage capabilities. Moreover, ammonia extraction can be achieved through a condensation reaction, further enhancing its efficiency. The compound’s color-changing property from yellow to white during ammonia storage presents the exciting prospect of developing color-based ammonia sensors. These sensors could enable visual monitoring and management of ammonia levels, enhancing efficiency and safety in industries reliant on ammonia.

The implications of this research reach beyond practical storage solutions. By providing a safe and cost-effective method for storing and extracting hydrogen, this discovery has the potential to contribute to the development of a hydrogen-based economy and a decarbonized society. It offers a viable pathway to leverage renewable energy sources and reduce carbon emissions.

The researchers behind this groundbreaking discovery envision further exploration of dynamic, reversible, and functionally useful compounds for ammonia storage. Such compounds could serve as carbon-free energy carriers, advancing hydrogen production and renewable energy sources. The goal is to create a more sustainable future by harnessing the potential of ammonia as a chemical storage medium.

The breakthrough discovery of the perovskite compound for safe and efficient ammonia storage marks a significant milestone in hydrogen research. With its cost-effectiveness, energy efficiency, and potential for color-based sensors, this innovation promises to revolutionize ammonia storage and contribute to a decarbonized society. By opening avenues for hydrogen extraction and storage, this research paves the way for a practical and sustainable hydrogen-based economy.

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