A research team, led by Professor Guntae Kim in the School of Energy and Chemical Engineering at UNIST has announced a breakthrough in technology that efficiently converts liquid ammonia into hydrogen.
A research team, led by Professor Guntae Kim in the School of Energy and Chemical Engineering at UNIST has announced a breakthrough in technology that efficiently converts liquid ammonia into hydrogen. Their findings have also attracted significant attention from academic research communities owing to its new analysis protocol, capable of finding optimal process environments.
In this study, the research team succeeded in producing green hydrogen (H2) in large quantities with a purity of nearly 100 percent by decomposing liquid ammonia (NH3) into electricity. Besides, according to the research team, such method consumed three times less power than hydrogen made using electrolysis of water.
Ammonia has emerged as an attractive potential hydrogen carrier due to its extremely high energy density, and ease of storage and handling. Moreover, the electrolysis of ammonia to produce nitrogen and hydrogen only requires an external voltage of 0.06 V theoretically, which is much lower than the energy needed for water electrolysis (1.23 V), noted the research team.
In this study, the research team propose a well-established procedure using in operando gas chromatography that enables us to reliably compare and evaluate the new catalyst for ammonia oxidation. According to the research team, with the protocol, they could distinguish in detail the competitive oxidation reaction between the ammonia oxidation and oxygen evolutionreactions with real-time monitoring.
Read more at Ulsan National Institute of Science and Technology (UNIST)
Image: Professor Guntae Kim and his research team (Credit: UNIST)
