Hydrogen absorption / release alloy, hydrogen absorption / release body, and hydrogen sensor.

摘要

PROBLEM TO BE SOLVED: To provide a hydrogen absorbing/releasing alloy having excellent repetition durability between hydrogen absorbing and hydrogen releasing, and to provide a hydrogen absorbing/releasing body and a hydrogen sensor.SOLUTION: A hydrogen absorbing/releasing alloy includes yttrium and magnesium, wherein the atomic ratio of yttrium to magnesium satisfies a relation of 0.25Y/Mg3.0. A hydrogen absorbing/releasing body and a hydrogen sensor are also provided.