1results about How to "Reduce hydrogen evolution" patented technology

The application discloses a kind of zinc negative electrode PVA / porous carbon array protective layer femtosecond laser preparation method, zinc negative electrode material and its application, to solve zinc negative electrode dendrite growth, corrosion passivation, hydrogen evolution side reaction highlights and the problems such as existing protective layer preparation process is complex, structure regulation precision is low.The preparation method includes three steps: S1 PVA is mixed with deionized water, heated and stirred to form a semi-thick solution;S2 the solution is uniformly coated on the surface of zinc foil, and a PVA protective layer is formed after drying;S3 PVA protective layer is decomposed by femtosecond laser, and a porous PVA / porous carbon array composite protective layer is prepared.The composite protective layer enhances the interface stability through PVA, and the synergistic effect of porous carbon guiding zinc ion uniform deposition effectively inhibits dendrite growth and corrosion reaction.The application process is simple, raw materials are environmentally friendly and cost is relatively low, suitable for mass production, and provides key technical support for commercialization of aqueous zinc ion battery.