초록 ▼

The present invention pertains to solid composite cathodes which comprise (a) an electroactive sulfur-containing cathode material which, in its oxidized state, comprises a polysulfide moiety of the formula, -S.sub.m -, wherein m is an integer from 3 to 10; and (b) non-activated carbon nanofibers. Th

The present invention pertains to solid composite cathodes which comprise (a) an electroactive sulfur-containing cathode material which, in its oxidized state, comprises a polysulfide moiety of the formula, -S.sub.m -, wherein m is an integer from 3 to 10; and (b) non-activated carbon nanofibers. The present invention also pertains to electric current producing cells comprising such solid composite cathodes, and methods of making such solid composite cathodes and electric current producing cells.

대표청구항 ▼

[What is claimed is:] [1.](a) an electrically conductive cathode coating layer comprising (i) an electroactive sufur-containing material which, in its oxidized state, comprises a polysulfide moiety of the formula, -S.sub.m -, wherein m is an integer from 3 to 10; and (ii) one or more conductive fill

[What is claimed is:] [1.](a) an electrically conductive cathode coating layer comprising (i) an electroactive sufur-containing material which, in its oxidized state, comprises a polysulfide moiety of the formula, -S.sub.m -, wherein m is an integer from 3 to 10; and (ii) one or more conductive fillers other than a non-activated carbon nanofiber; and(b) non-activated carbon nanofibers, wherein said carbon nanofibers have a specific surface area of less than 600 m.sup.2 /g, and an aspect ratio of at least 20, and wherein individual carbon nanofibers form a random, three dimensional, microporous network in said cathode coating layer;wherein said cathode coating layer comprises 50% or greater by weight of said electroactive sulfur-containing material, and the weight ratio of said carbon nanofibers to said electroactive sulfur-containing material in said cathode coating layer is in the range of 0.01:1 to 0.1:1.