Method for producing composite powder, and for a porous composite material for electrochemical electrodes that is produced using the composite powder

A method for producing a porous composite material for electrochemical electrodes, said method comprising:

• providing template particles of inorganic template material, said particles forming a pore-containing template framework of interconnected nanoparticles;
• producing a composite powder from a meltable carbon precursor substance and active material by:
• a. producing a melt from the meltable carbon precursor substance with nanoparticles of the active material distributed in the melt;
• and
• b. dividing the melt or a molten body obtained by solidification of the melt into the composite powder, wherein the nanoparticles of the active material are embedded in a matrix of the carbon precursor substance;
• producing a powder mixture after said producing of the melt and dividing by mixing the composite powder and the template particles, wherein the powder mixture has the composite powder and template particles intermixed therein in a volume ratio that is in a range between 0.05 and 1.6;
• heating the powder mixture and softening the composite powder after said mixing so as to form a softened composite such that the softened composite penetrates into the pores of the template framework and is carbonized;
• and
• removing the template framework so as to form the porous composite material.