Sustainable hydrogen production via LiH hydrolysis for unmanned air vehicle (UAV) applications |
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| Affiliation: | 1. Hydrogen for Mobility Lab, Institute for Future Transport and Cities, Coventry University, Cheetah Road, Chamber House IV09, CV1 2TL, Coventry, UK;2. School of Mechanical, Automotive and Aersopace Engineering, Coventry University, Priory Street, CV1 5FB, Coventry, UK;3. Pavia Hydrogen Lab, C.S.G.I. & Dipartimento di Chimica, Sezione di Chimica Fisica, Università di Pavia, Viale Taramelli 16, 27100, Pavia, Italy;1. School of Materials Science and Engineering, Guangdong Provincial Key Laboratory of Advanced Energy Storage Materials, South China University of Technology, Guangzhou, 510641, People''s Republic of China;2. China-Australia Joint Laboratory for Energy & Environmental Materials, Key Laboratory of Fuel Cell Technology of Guangdong Province, Guangzhou, 510641, People''s Republic of China;3. Institute of Applied Physics and Materials Engineering (IAPME), University of Macau, Macau SAR, People''s Republic of China;1. State Key Laboratory of Silicon Materials, Department of Materials Science and Engineering, Zhejiang University, Hangzhou 31007, China;2. Key Laboratory of Advanced Materials and Applications for Batteries of Zhejiang Province, Zhejiang University, Hangzhou 310027, China;1. School of Materials Science and Engineering, Guangdong Provincial Key Laboratory of Advanced Energy Storage Materials, South China University of Technology, Guangzhou, 510641, People’s Republic of China;2. China-Australia Joint Laboratory for Energy & Environmental Materials, Key Laboratory of Fuel Cell Technology of Guangdong Province, Guangzhou, 510641, People’s Republic of China;3. Joint Key Laboratory of the Ministry of Education, Institute of Applied Physics and Materials Engineering (IAPME), University of Macau, Macau SAR, People’s Republic of China;1. Department of Aerospace Engineering, Pusan National University, Jangjeon 2-dong, Geumjeong-gu, Busan, 46241, South Korea;2. Department of Nanomechatronics Engineering, Pusan National University, Jangjeon 2-dong, Geumjeong-gu, Busan, 46241, South Korea |
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| Abstract: | In the current study, an experimental approach for the further understanding of the LiH hydrolysis reaction for hydrogen production is considered. The experimental work has been undertaken under small scale conditions by utilising fixed bed reactors. The hydrolysis reaction has been studied at several oven temperatures (150 °C, 300 °C and 500 °C). The favourable driving potentials for the hydrolysis reactions were identified by the utilisation of the Gibbs free energy analysis. The main outcome of the study is the deceleration of the reaction pace due to the formation of the by-product layers during the reaction. At the initial stage, due to the contact of steam with the unreacted and fresh LiH surface, the reaction proceeds on a fast pace, while the formation of the layers tends to decelerate the diffusion of steam into the core of material, forcing the production step to be slower. The hydrogen yield was found to be more than 90% of the theoretical value for all the reaction temperatures. Finally, a scenario of a hybrid-electric propulsion system for Unmanned Aerial Vehicles (UAVs) including Li-ion battery, Proton Membrane Fuel Cell (PEMFC) and an on-board hydrogen production system based on LiH hydrolysis is introduced and studied. |
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| Keywords: | Hydrogen production Metal hydrides LiH hydrolysis Steam hydrolysis Hydrogen generator Unmanned aerial vehicles |
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