Patent ID: 6136474
Filing Date: 2000-10-24
Classification: H01M,Y02E

Abstract:
A non-aqueous electrolyte cell comprising:an anode capable of intercalating or deintercalating light metal ions, the anode is made of a carbonaceous material that is subjected to electron beam irradiation at a dose ranging from 300 kGy to 1,000 kGy when an electron beam accelerated in a vacuum is irradiated under a gaseous atmosphere to the carbonaceous material, the carbonaceous material being selected from the group consisting of calcined mesophase carbon microbead, calcined pitch coke, calcined furfuryl alcohol resin, calcined cellulose and calcined phenolic resin,a cathode, anda non-aqueous electrolyte, wherein the non-aqueous electrolyte cell yields both charging and discharging capacity at a level of at least 10 mAh/g higher than a second non-aqueous electrolyte cell having a second anode not subjected to electron beam irradiation.