▎ 摘　　要

NOVELTY - Preparation method for improving performance of AB-type hydrogen storage alloy involves (s1) smelting reaction metal sample, (s2) ball milling obtained casting alloy sample surface to form alloy powder sample, (s3) mixing each portion of alloy powder sample with e.g. one-dimensional graphene, (s5) placing in hydrogen storage tank to discharge hydrogen, collecting preset number of hydrogen release time and hydrogen release rate value in the initial collecting time and the end collecting time, fitting the hydrogen release time and the hydrogen release rate values to obtain hydrogen releasing fitting curve, (s6) calculating the ratio of the area of the time corresponding to the maximum value and the area of the maximum value corresponding to the maximum value to the area of the ending collecting time to obtain parameters, (s7) carrying out normalization processing to form graphene catalyst, and (s8) mixing with the alloy powder. USE - Preparation method for improving performance of AB-type hydrogen storage alloy (claimed). ADVANTAGE - The method analyzes the catalyst in one-dimensional and combination and reaction of two-dimensional, and three-dimensional graphene, by determining the best parameter of the three, mixing the three according to the best parameter to form graphene catalyst, so as to slow down the hydrogen discharging rate, improving the AB-type hydrogen storage alloy platform pressure to 3-5 atmospheric pressure, so that the hydrogen releasing rate can maintain higher level for longer period of time, and the stability is improved. DETAILED DESCRIPTION - Preparation method for improving performance of AB-type hydrogen storage alloy involves (s1) providing alloy raw materials in preset mass ratio, and providing reaction metal sample based on the alloy raw materials, (s2) placing the reaction metal sample in smelting furnace, and smelting several times, (s3) crushing and ball milling obtained casting alloy sample surface to form alloy powder sample, and uniformly dividing into three portion, (s4) mixing each portion of alloy powder sample with one-dimensional graphene, two-dimensional graphene and three-dimensional graphene with the same mass to obtain mixed alloy sample (A), mixed alloy sample (B), and mixed alloy sample (C), (s5) placing in hydrogen storage tank to discharge hydrogen, collecting preset number of hydrogen release time and hydrogen release rate value in the initial collecting time and the end collecting time, fitting the hydrogen release time and the hydrogen release rate values by taking the hydrogen discharging time as horizontal coordinate, and the hydrogen discharging rate as vertical coordinate to obtain hydrogen releasing fitting curve (C1), hydrogen releasing fitting curve (C2), and hydrogen releasing fitting curve (C3), (s6) calculating the ratio of the area of the time corresponding to the maximum value and the area of the maximum value corresponding to the maximum value to the area of the ending collecting time by taking the time corresponding to the maximum value of the hydrogen releasing rate value in the hydrogen releasing fitting curve as the boundary, according to the hydrogen releasing fitting curve (C1), hydrogen releasing fitting curve (C2), and hydrogen releasing fitting curve (C3) sequentially to obtain parameter (P1), parameter (P2), and parameter (P3), (s7) carrying out normalization processing to obtained parameters, configuring one-dimensional graphene, two-dimensional graphene and three-dimensional graphene based on proportion to form graphene catalyst, and (s8) mixing with the alloy powder formed by the alloy raw material.