Abstract: The present invention provides a silicon-carbon composite which contains a body having a core-shell structure and a polymer modification layer. The core of the body contains a silicon-containing particle. The shell of the body is a carbon encapsulation layer. The polymer modification layer is located on the external surface of the shell of the body and encapsulates the body. The polymer modification layer comprises a polymer selected from the group consisting of polyester, polyfluorocarbon, polyvinyl alcohol, polyacrylic acid, cellulose and a combination thereof.

Abstract: A silicon-carbon composite material includes a silicon-containing particle, a carbon covering layer enclosing the silicon-containing particle, and a conductive material included in at least one of the silicon-containing particle and the carbon covering layer. A ratio of an integral area of a characteristic peak of sp2 carbon in an X-ray photoelectron spectrum of the silicon-carbon composite material to a total integral area of characteristic peaks of C1s orbital in the X-ray photoelectron spectrum is in a range from 0.7 to 0.9.

Abstract: The present invention provides a silicon-carbon composite which contains a body having a core-shell structure and a polymer modification layer. The core of the body contains a silicon-containing particle. The shell of the body is a carbon encapsulation layer. The polymer modification layer is located on the external surface of the shell of the body and encapsulates the body. The polymer modification layer comprises a polymer selected from the group consisting of polyester, polyfluorocarbon, polyvinyl alcohol, polyacrylic acid, cellulose and a combination thereof.

Abstract: The invention pertains to a conductive polymer composite comprising: (a) a conductive polymer and (b) a polyanion, wherein the conductive polymer comprises polymerized units derived from a monomer of formula (I): wherein: A is a C1-C4 alkylene group substituted with (R)p; X is O or S; R is H, an unsubstituted or substituted C1-C20 alkyl or alkoxy, or an unsubstituted or substituted C6-C20 aryl; and p is 0, 1, or 2, and the conductive polymer has a weight average molecular weight ranging from 3,000 to 30,000. A process for preparing the conductive polymer composite is also provided.

Abstract: The invention pertains to a conductive polymer composite comprising: (a) a conductive polymer and (b) a polyanion, wherein the conductive polymer comprises polymerized units derived from a monomer of formula (I): wherein: A is a C1-C4 alkylene group substituted with (R)p; X is O or S; R is H, an unsubstituted or substituted C1-C20 alkyl or alkoxy, or an unsubstituted or substituted C6-C20 aryl; and p is 0, 1, or 2, and the conductive polymer has a weight average molecular weight ranging from 3,000 to 30,000. A process for preparing the conductive polymer composite is also provided.