Hybrid nickel-metal hydride/hydrogen battery

被引：38
|
作者：
Uesato, Hiroki [1 ]
Miyaoka, Hiroki [1 ,2 ]
Ichikawa, Takayuki [3 ]
Kojima, Yoshitsugu [1 ,2 ]
机构：
[1] Hiroshima Univ, Grad Sch Adv Sci Matter, 1-3-1 Kagamiyama, Hiroshima 7398530, Japan
[2] Hiroshima Univ, Nat Sci Ctr Basic Res & Dev, 1-3-1 Kagamiyama, Hiroshima 7398530, Japan
[3] Hiroshima Univ, Grad Sch Engn, 1-4-1 Kagamiyama, Hiroshima 7398527, Japan
来源：
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2019年 / 44卷 / 08期
关键词：
Nickel metal hydride battery; Metal hydride; High dissociation pressure; High-pressure hydrogen; Energy storage; ENERGY-STORAGE; ELECTROCHEMICAL-BEHAVIOR; MH BATTERIES; HYDROGEN; HYDRIDE; ELECTRODE; SYSTEM; ALLOYS;
D O I：
10.1016/j.ijhydene.2018.12.114
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
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.
引用
收藏
页码：4263 / 4270
页数：8
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