Porous composite material capable of generating electric arc in microwave field, preparation method therefor, and use thereof

A porous composite material, comprising an inorganic porous framework and a carbon material supported on the inorganic porous framework,

• wherein the average pore diameter of the inorganic porous framework is 0.2-1000 μm,
• wherein the inorganic porous framework has a porous structure and is at least one selected from the group consisting of;
• a carbon framework obtained after carbonization of melamine sponge,
• a carbon framework obtained after carbonization of phenolic resin sponge,
• a porous framework constituted by an inorganic fibers, fiber selected from an aluminum silicate fiber, a mullite fiber, an alumina fiber, a zirconia fiber, a magnesium oxide fiber, a boron nitride fiber, a boron carbide fiber, a silicon carbide fiber, and a potassium titanate fiber,
• and
• a ceramic fiber framework obtained after baking a ceramic fiber framework precursor;
• and
• the carbon material supported on the inorganic porous framework is selected from the group consisting of graphene, carbon nanotubes, graphite, carbon black, carbon fibers, carbon dots, carbon nanowires, products obtained by carbonization of a carbonizable organic matter or a carbonizable mixture comprising the carbonizable organic matter, and combinations thereof.