Vanadium alloy, preparation and application thereof

CN117684063BActive Publication Date: 2026-07-03WUHAN HYDROGEN ENERGY & FUEL CELL IND TECH RES INST CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
WUHAN HYDROGEN ENERGY & FUEL CELL IND TECH RES INST CO LTD
Filing Date
2023-11-27
Publication Date
2026-07-03

AI Technical Summary

Technical Problem

Existing vanadium alloys exhibit incomplete hydrogen desorption at room temperature and pressure, poor hydrogen absorption and desorption kinetics, short cycle life, and are difficult and costly to prepare. Furthermore, their lifespan decays rapidly after long-term hydrogen charging and desorption cycles.

Method used

A vanadium-based alloy with the chemical formula (FeVa)xVyTizCrnWm was used to prepare a uniform BCC phase structure alloy by high-frequency induction melting and liquid nitrogen cooling technology, combined with element adjustment and high-frequency induction heat treatment, thereby improving the hydrogen absorption and desorption rate and cycle stability.

Benefits of technology

This technology enables rapid and reversible hydrogen absorption and desorption in vanadium alloys at room temperature and pressure, thereby increasing hydrogen storage capacity and cycle life, reducing hydride stability, shortening activation time, and improving hydrogen charge and desorption kinetics.

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Abstract

The application discloses a vanadium alloy and a preparation and application thereof, and has a chemical formula of (FeV a ) x V y Ti z Cr n W m ; wherein, a represents a molecule number of FeV a , x, y, z, n and m respectively represent atom numbers of V, Ti, Cr and W, the value of a is 90 or 95, the value range of x is 22-40, the value range of y is 20-46, the value range of z is 8-27, the value range of n / m is 0.3-3.5, and m=100-x-y-z-n; W is one or more of transition metal elements and rare earth elements, the crystal form of the vanadium alloy is changed through element adjustment, and the problems of incomplete hydrogen release of the vanadium alloy at normal temperature and normal pressure, poor hydrogen absorption and release kinetics, and short cycle life are solved.
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