Method for preparing novel energy-saving material from photovoltaic waste

The invention relates to the field of environmental protection, in particular to a method for preparing an energy-saving novel material from photovoltaic waste. The preparation method comprises the following steps: preparing resin porous carbon by taking modified phenolic resin as a raw material, and carrying out sulfydryl-olefin addition reaction on sulfydryl silicon-containing phenolic resin and methacryloyloxy silicon powder; the volume expansion of the silicon nanoparticles is inhibited, so that the structural stability of the silicon negative electrode is maintained, and the side reaction between electrolyte and a silicon interface is reduced; steam formed by heating 2-mercaptopropionic acid and monosilane introduce a silicon element into resin porous carbon, vinyl guanamine provides a nitrogen source, silicon element agglomeration can be avoided, silicon element distribution uniformity can be improved, and the specific capacity of the negative electrode material can be improved; according to the method,