Rare earth based hydrogen storage alloy and application thereof

US10566614B2 · kind B2 · utility

Assignees

• BAOTOU RESEARCH INSTITUTE OF RARE EARTHS · CN
• National Engineering Research Centre of Rare Earth Metallurgy and Function Materials · CN
• Tianjin Baogang Research Institute of Rare Earths Co., Ltd. · CN

Inventors

• Huizhong Yan · Wukehudong, CN
• Li Wang
• Wei Xiong · Madison, US
• Baoquan Li · Shanghai, CN
• Jin Li · 安丰镇, CN

Key dates

• Filing date: Aug 27, 2015
• Grant date: Feb 18, 2020
• Expiry date: Aug 7, 2036

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02E60/10
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

The invention relates to a rare earth based hydrogen storage alloy, represented by the general formula (I): RExYyNiz-a-b-cMnaAlbMcZrATiB  (I) wherein RE denotes one or more element(s) selected from La, Ce, Pr, Nd, Sm, Gd; M denotes one or more element(s) selected from Cu, Fe, Co, Sn, V, W. The alloy has favorable pressure-composition-temperature characteristic, high hydrogen storage capacity, high electrochemical capacity. The alloy doesn't contain magnesium element, and the preparation process of the alloy is easy and safe.