Composite hydrogen evolution negative pole with micropore hydrogen storage layer and preparing method for composite hydrogen evolution negative pole

The invention discloses a composite hydrogen evolution negative pole with a micropore hydrogen storage layer and a preparing method for the composite hydrogen evolution negative pole. The method includes the steps that (1) base body pretreatment, wherein a base body is subject to alkali soaking and washing, and then sand blasting is carried out; (2) a hydrogen storage middle layer is prepared, wherein the step includes the steps: (2.1) plasma thermal spraying treatment is carried out, a Ni50A150 alloy and hydrogen storage alloy powder are evenly mixed according to the weight ratio being (0.95-0.8): (0.05-0.2), and a plasma spraying device is used for spraying; and (2.2) activating treatment is carried out, the base body treated in the step (2.1) is placed into a first alkaline solution to be soaked, excitation is carried out, and the micropore middle layer with the high specific surface area and the high hydrogen storage performance is obtained; and (3) a thermal decomposition method is adopted for preparing a catalyst layer on the hydrogen storage middle layer. The preparing method is simple and reliable in preparation process, the commercial process is easily achieved; and the prepared composite hydrogen evolution pole has the beneficial effects that the hydrogen evolution catalytic activity is high; during continuous electrolysis, the countercurrent resisting capacity is high, and the service life of the pole is long.