特集 「水素吸蔵合金活用技術」
ナノ構造化鉄チタン水素吸蔵合金の大量生産と再生可能エネルギーの水素による貯蔵
2017 年 42 巻 4 号 p. 222-227
詳細
2017 年 42 巻 4 号 p. 222-227
The nanostructured FeTi alloy produced by mechanical alloying exhibited a high rate of the initial activation compared with an untreated polycrystalline FeTi alloy. A ball-milling system was developed for a mass production of the nanostructured FeTi (n-FeTi) alloy. Using this system, an amount over 300 kilograms of the n-FeTi alloy can be produced by a butch. The n-FeTi alloy exhibits high rates ofthe initial activation and cyclic hydrogen absorption-desorption reactions, and a high cyclic stability at room temperature under 1MPa of hydrogen gas with a purity of 99.99%. The produced n-FeTi alloy was certified as a non-hazardous material under the Fire Defense Law of Japan. A manufactured hydrogen storage tank containing of the produced alloy was examined in terms of hydrogen absorption-desorption rates, and renewable energy storage performance. Obtained results showed a high availability of the tank in the practical storage of renewable energy.
