期刊
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
卷 44, 期 8, 页码 4263-4270出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2018.12.114
关键词
Nickel metal hydride battery; Metal hydride; High dissociation pressure; High-pressure hydrogen; Energy storage
High capacity, high efficiency and resource-rich energy storage systems are required to store large scale excess electrical energy from renewable energy. We proposed Hybrid Nickel-Metal Hydride/Hydrogen (Ni-MH/H-2) Battery using high capacity AB(5)-type hydrogen storage alloy and high-pressure H-2 gas as negative electrode active materials. It was experimentally confirmed that hydrogen gas can be utilized as an active material of negative electrode by the presence of the AB(5)-type hydrogen storage alloy. The experimental average cell voltage suggested that H-2 gas passed through the alloy in the form of atoms. The calculated gravimetric energy density of this hybrid battery increased up to 1.5 times of the conventional Ni-MH battery with low content of rare-earth element which is 32 wt% of the Ni-MH battery. (C) 2019 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
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