| 摘要 |
PURPOSE: Provided are an active material for anodes in electrochemical cells which supplies a higher capacitance as compared with carbon, and can minimize an irreversible loss of lithium and establish good stability of lithium cycle. CONSTITUTION: The active material for anodes consists of coated metal cores made from antimony, bismuth, cadmium, indium, lead, gallium, tin or their alloys. The active material for anodes is prepared by the steps of (i) producing a suspension or a sol of the metal or alloy core in urotropin; (ii) emulsifying the suspension with 5-12C hydrocarbons; (iii) precipitating the emulsion on the metal or alloy cores; and (iv) converting the metal hydroxide and/or oxyhydroxide into the corresponding oxide by tempering the system. The electrochemical cell consists of a cathode, separator, electrolyte and the anode made of the above material. |
