| 摘要 |
PURPOSE: A silicon-activated charcoal complex electrode active material is provided to improve the energy density and the power density by maximizing a reaction active site with an electrolyte according to a porous structure in the use of the battery. CONSTITUTION: A silicon-activated charcoal complex electrode active material has a structure in which the activated charcoal surrounds the silicon particle; and implements the porosity by spreading multiple pores which have a diameter of 1-200 nm in a surface and a bulk; the average particle diameter is 10 nm-5 micron; the insertion or the deintercalation of an ion is available from the surface and the bulk according to the charge or the discharge operation through multiple pores. The electrode active material has the porosity of 1-50%, and the silicon particle has the 10-1000 nm of average particle diameter. [Reference numerals] (AA) CARBON MATERIAL; (BB) Pore; (CC) Activated carbon; (DD) Silicon-activated carbon composite; (EE) SiO_2-carbon material composite |
