NiFe sulfide alloy nano flower ball catalyst, composite hydrogen storage material containing catalyst and preparation method and application of composite hydrogen storage material

The invention discloses a NiFe sulfide alloy nano flower ball catalyst, a composite hydrogen storage material containing the catalyst and a preparation method and application of the NiFe sulfide alloy nano flower ball catalyst. The NiFe sulfide alloy nano flower ball catalyst is prepared from the following substances in percentage by mass: 360-80 wt% of FeNi, 65-20 wt% of Fe9Ni9S and 25-20 wt% of Ni3S. The invention also discloses a preparation method of the NiFe sulfide alloy nano flower ball catalyst. The preparation method comprises the following steps: dissolving nickel nitrate hexahydrate, ferric nitrate nonahydrate and H2TDC in a mixed solution of DMF and deionized water; heating at 120 DEG C, cooling to room temperature, washing and drying to obtain a NiFe-MOF precursor; and then calcining under hydrogen pressure to obtain the NiFe sulfide alloy nano flower ball catalyst. The preparation method disclosed by the invention is simple, efficient and low in raw material cost, and has a relatively high comme