Patent ID: 6174625
Filing Date: 2001-01-16
Classification: C04B,H01M,Y02E

Abstract:
A method for making an anode comprising the steps of:preparing a first carbon powder by treating a mesophase carbon powder having an expansion of about 0% as measured with a dilatometer used for the measurement of a thermal expansion of coal by heating in an oxidizing atmosphere at a temperature of from about 100.degree. to about 400.degree. C. for a period of about one hour;preparing a second carbon powder by treating a mesophase carbon powder having an expansion of about 0% as measured with a dilatometer used for the measurement of a thermal expansion test for coal by heating in an oxidizing atmosphere at a temperature of from about 100.degree. to about 400.degree. C. for a period of about one hour and thereafter heating in an inert gas atmosphere at a temperature of from about 600.degree. C. to about 1200.degree. C. for a period of about three hours;admixing the first carbon powder and the second carbon powder together to form an admixture at a ratio of from about 5:95 to about 95:5, respectively;straining the admixture to provide a parcticle size adjusted powder admixture having first and second carbon powder particles within a selected particle size range;compressing the particle size adjusted powder admixture in the absence of any added binder onto a metal collector body to define an anode assembly; andthereafter, sintering the anode assembly by heating the anode assembly in an inert gas atmosphere at a temperature of about 1000.degree. C. for a period of about three hours.