Amorphous carbon particles

Abstract

A method for producing amorphous carbon particles comprising includes adding and mixing graphite particles into a precursor of amorphous carbon and then cross-linking the precursor of amorphous carbon to obtain a first cross-linked product, or cross-linking a precursor of amorphous carbon and then adding and mixing graphite particles into the cross-linked precursor of amorphous carbon to obtain a second cross-linked product. Infusibility is imparted to the first or second cross-linked product to obtain an infusibilized product to which infusibility has been imparted. The infusibilized product is baked to obtain amorphous carbon particles. The amorphous carbon particles include the graphite particles and amorphous carbon which embeds the graphite particles.

1 . Amorphous carbon particles comprising:
 graphite particles; and   amorphous carbon embedding the graphite particles.   
     
     
         2 . The amorphous carbon particles according to  claim 1 , wherein a specific surface of the amorphous carbon particles is 10 m 2 /g or less. 
     
     
         3 . The amorphous carbon particles according to  claim 1 , wherein a specific surface of the amorphous carbon particles is 0.5 to 8 m 2 /g. 
     
     
         4 . The amorphous carbon particles according to  claim 1 , wherein a specific surface of the amorphous carbon particles is 1.0 to 4 m 2 /g. 
     
     
         5 . The amorphous carbon particles according to  claim 1 , wherein a specific surface of the amorphous carbon particles is 1.2 to 3.5 m 2 /g. 
     
     
         6 . The amorphous carbon particles according to  claim 1 , wherein a true specific gravity of the amorphous carbon particles is from 1.600 to 1.700 according to JIS R7222:1997. 
     
     
         7 . The amorphous carbon particles according to  claim 1 , wherein a true specific gravity of the amorphous carbon particles is from 1.600 to 1.690 according to JIS R7222:1997. 
     
     
         8 . The amorphous carbon particles according to  claim 1 , wherein a true specific gravity of the amorphous carbon particles is from 1.620 to 1.685 according to JIS R7222:1997. 
     
     
         9 . The amorphous carbon particles according to  claim 1 , wherein a content of the graphite particles in the amorphous carbon particles is from 1% to 50% by mass. 
     
     
         10 . The amorphous carbon particles according to  claim 1 , wherein a content of the graphite particles in the amorphous carbon particles is from 5% to 20% by mass. 
     
     
         11 . The amorphous carbon particles according to  claim 1 , wherein a content of the graphite particles in the amorphous carbon particles is from 10% to 20% by mass. 
     
     
         12 . The amorphous carbon particles according to  claim 1 , wherein an average particle size of the graphite particles in the amorphous carbon particles is from 1 to 25 μm. 
     
     
         13 . The amorphous carbon particles according to  claim 1 , wherein an average particle size of the amorphous carbon particles is from 2 to 15 μm. 
     
     
         14 . The amorphous carbon particles according to  claim 1 , wherein an average particle size of the graphite particles in the amorphous carbon particles is from 3 to 15 μm. 
     
     
         15 . The amorphous carbon particles according to  claim 1 , wherein the amorphous carbon particles are produced by a method comprising:
 adding and mixing an addition amount of graphite particles into a precursor of amorphous carbon and then cross-linking the precursor of amorphous carbon to obtain a first cross-linked product, wherein the precursor is in a fluid state and the graphite particles are added to the precursor with stirring, or   cross-linking a precursor of amorphous carbon and then adding and mixing graphite particles into the cross-linked precursor of amorphous carbon to obtain a second cross-linked product, wherein the cross-linked precursor is in a fluid state and the graphite particles are added to the cross-linked precursor with stirring;   subjecting the first or second cross-linked product to mechanochemical treatment to obtain a mechanochemically treated product;   imparting infusibility to the mechanochemically treated product to obtain an infusibilized product; and   baking the infusibilized product to obtain amorphous carbon particles, the amorphous carbon particles including the graphite particles and amorphous carbon embedding the graphite particles.   
     
     
         16 . The amorphous carbon particles according to  claim 15 , wherein the addition amount of the graphite particles is from 1% to 50% by mass based on an amount of the precursor of amorphous carbon. 
     
     
         17 . The amorphous carbon particles according to  claim 15 , wherein an average particle size of the graphite particles in the amorphous carbon particles is from 1 to 25 μm. 
     
     
         18 . The amorphous carbon particles according to  claim 15 , wherein a true specific gravity of the amorphous carbon particles is from 1.600 to 1.700 according to JIS R7222:1997. 
     
     
         19 . The amorphous carbon particles according to  claim 15 , wherein a content of the graphite particles in the amorphous carbon particles is from 1% to 50% by mass. 
     
     
         20 . The amorphous carbon particles according to  claim 15 , wherein a specific surface of the amorphous carbon particles is 10 m 2 /g or less.