Reduced tin oxides as anode active material in electrochemical cells

An anode material contains reduced tin dioxide. An Independent claim is also included for the production of the anode material comprising binding a tin chloride solution with urea; binding the solution obtained with urotropin; emulsifying the sol obtained in petroleum ether; washing the gel obtained and drawing off the solvent; drying and tempering the gel; and subjecting the SnO2 obtained to a reducing gas stream in an aerated oven.