Preparation method of AB5 type hydrogen-storage alloy used on MH-Ni battery

Abstract

The invention relates to a preparation method of an AB5 type hydrogen-storage alloy used on an MH-Ni battery, which adopts the technical scheme that an Mn base alloy 10 to 20 percent, a Co base alloy 20 to 30 percent, norium 15 to 25 percent and metal Ni 35 to 45 percent are mixed; the mixed materials are put in a vacuum induction melting furnace together, and then the furnace is vacuumized until the pressure is below 0.5Pa; argon gas is charged in the furnace, and then powder starts to be fed through electrifying; refining is performed for 5 to 30 minutes after the materials are melted down completely, and a fused mass is poured onto a water cooling die for solidification; and an solidified alloy block is put in a vacuum handling furnace and is processed through heat preservation for 4 to 10 hours under the temperature ranging from 900 to 1100 DEG C. The preparation method eliminates deflection and aliquation of Mn elements in the hydrogen-storage alloy, especially controls fluctuation of Mn components, reduces the contents of C and Mg impurities in the hydrogen-storage alloy, increases the charge retention capacity of the MH-Ni battery, and reduces the local action of the MH-Ni battery.

Description

technical field

[0001] The invention relates to a recyclable green energy MH-Ni battery AB 5 The field of preparation method of type hydrogen storage alloy. Background technique

[0002] With the advancement of science and technology, the demand for resources and energy is increasing. The earth's resources are limited, and the exploitation and use of these resources will pollute the environment. How to save resources and energy is a major issue before us. topic. In addition, the production and use of energy will also bring serious pollution to the environment, especially the production of CO and CO 2 The resulting greenhouse effect has seriously affected the survival of human beings, forcing people to develop and explore new energy fields. MH-Ni battery is a kind of green and recyclable energy, which has the characteristics of high discharge capacity, long cycle life and high current discharge. It has been widely used in industry and household, especially electric vehicle...