Preparation of polymeric resins and carbon materials
The present application is directed to methods for preparation of carbon materials. The carbon materials comprise enhanced electrochemical properties and find utility in any number of electrical devices, for example, as electrode material in ultracapacitors or batteries.
1. A battery electrode composition comprising a plurality of composite particles having an average particle size, Dv,50, of less than 1 mm and wherein individual composite particles comprise:
(a) a carbon material comprising:
(i) a pore structure having micropores and mesopores,
(ii) a maximum theoretical capacitance greater than 25 F/cm 3 as measured at a current density of 0.5 Amp/g employing an electrolyte comprising tetraethylammonium tetrafluoroborane in acetonitrile,
(iii) a BET specific surface area of at least 500 m 2 /g, and
(iv) less than 500 ppm of all atoms having a molecular weight between 11 and 92, as measured by photon induced x-ray emissions; and
(b) an electrochemical modifier incorporated within the pore structure of the carbon material, wherein the electrochemical modifier comprises silicon in elemental form.
2. The battery electrode composition of claim 1 , wherein the carbon material further comprises a total pore volume of at least 0.5 cc/g.
3. The battery electrode composition of claim 1 , wherein the carbon material is electrically conductive.
4. The battery electrode composition of claim 1 , wherein a content of the electrochemical modifier in the composite particles is at least 25% to 95% weight percent.
5. The battery electrode composition of claim 1 , wherein the carbon material further comprises at least 0.1 cc/g of pores with a pore size greater than 20 Angstroms.
6. The battery electrode composition of claim 1 , wherein the composite particles further comprise greater than 100 ppm of the electrochemical modifier.
7. The battery electrode composition of claim 1 , wherein the carbon material further comprises a peak pore volume ranging from 2 to 100 nm.
8. The battery electrode of claim 1 , wherein the carbon material further comprises a BET specific surface area of at least 1000 m 2 /g.
9. The battery electrode of claim 1 , wherein the carbon material further comprises a tap density of at least 0.3 g/cc.
10. A battery, comprising an anode and cathode, wherein the anode comprises the battery electrode composition of claim 1 .
11. A battery electrode composition comprising a plurality of composite particles having an average particle size, Dv,50, of less than 1 mm and wherein individual composite particles comprise:
(a) a carbon material comprising:
(i) a pore structure having micropores and mesopores,
(ii) a maximum theoretical capacitance greater than 25 F/cm 3 as measured at a current density of 0.5 Amp/g employing an electrolyte comprising tetraethylammonium tetrafluoroborane in acetonitrile,
(iii). a total pore volume of at least 0.7 cm 3 /g, and
(iv) less than 500 ppm of all atoms having a molecular weight between 11 and 92, as measured by photon induced x-ray emissions; and
(b) an electrochemical modifier incorporated within the pore structure of the carbon material, and wherein the electrochemical modifier comprises silicon in elemental form.
12. The battery electrode composition of claim 11 , wherein the carbon material comprises a total pore volume of at least 0.9 cm 3 /g.
13. The battery electrode composition of claim 11 , wherein the carbon material is electrically conductive.
14. The battery electrode composition of claim 11 , wherein a content of the electrochemical modifier in the composite particles is at least 25% to 95% weight percent.
15. The battery electrode composition of claim 11 , wherein the carbon material further comprises at least 0.1 cc/g of pores with a pore size greater than 20 Angstroms.
16. The battery electrode composition of claim 11 , wherein the composite particles further comprise greater than 100 ppm of the electrochemical modifier.
17. The battery electrode composition of claim 11 , wherein the carbon material further comprises a peak pore volume ranging from 2 to 100 nm.
18. The battery electrode of claim 11 , wherein the carbon material further comprises a BET specific surface area of at least 400 m 2 /g.
19. The battery electrode of claim 11 , wherein the carbon material further comprises a tap density of at least 0.3 g/cc.
20. A battery comprising an anode and cathode, wherein the anode comprises the battery electrode composition of claim 11 .