Secondary battery functional material, preparation method therfor and use thereof

A secondary battery functional material, comprising a carrier material and an active material;

• wherein the carrier material is a porous material catalyzing the active material at a voltage of 2.0-4.8 V, and the carrier material comprises one or more of the following:
• porous metal materials, porous ceramic materials, porous carbon materials, porous plastics, and molecular sieves;
• the active material comprises lithium-containing compounds or sodium-containing compounds, and the active material is uniformly distributed in pores and on a surface of the carrier material in the form of small particles;
• a particle size Dv50 of the active material is between 0.1 nm and 10 μm, a particle size Dv50 of the carrier material is between 1 nm and 100 μm, and a particle size Dv50 of the functional material for secondary batteries is between 1 nm and 120 μm;
• the lithium-containing compounds comprise one or more of lithium carbonate, lithium hydroxide, lithium oxalate, lithium acetate, lithium formate, lithium oxide, lithium peroxide, lithium sulfide, lithium fluoride and lithium nitride;
• the sodium-containing compounds comprise one or more of sodium carbonate, sodium hydroxide, sodium oxalate, sodium acetate, sodium formate, sodium oxide, sodium peroxide, sodium sulfide and sodium fluoride;
• the porous metal materials comprise one or more of aluminum, copper, iron, silver, titanium, nickel, tungsten, cobalt, molybdenum, platinum, magnesium, lead, zinc, and one or more alloy materials of the above metals;
• the porous ceramic materials comprise one or more of porous alumina, porous zirconia, porous magnesia, porous silicon carbide, porous silicon nitride, cordierite, high silica silicate, aluminosilicate and aluminum titanate;
• the porous carbon materials comprise one or more of the activated carbon, expanded graphite, activated carbon fiber, carbon nanotube and porous acetylene black;
• the porous plastics comprise one or more of porous polyethylene, porous polystyrene, porous polyvinyl chloride, porous polypropylene, porous polyurethane, and porous phenolic resin;
• the molecular sieves comprise one or more of cross-linked dextran, carbon molecular sieves, or zeolites;
• and
• the secondary battery functional material is obtained by adsorbing a clear solution containing precursors of the active material into the pores of the carrier material, and drying treatment, with a temperature for the drying treatment being 60° C.-300° C.