Preparation of polymeric resins and carbon materials
AssigneeGroup14 Technologies, Inc.
InventorsKatharine Geramita, Benjamin E. Kron, Henry R. Costantino, Aaron M. Feaver, Avery J. Sakshaug, Leah A. Thompkins, Alan Tzu-Yang Chang
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Abstract
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.
Claims21
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. carbon material comprising:
- i. a pore structure having micropores and mesopores,
- ii. a maximum theoretical capacitance greater than 20 F/cm3 as measured at a current density of 0.5 Amp/g employing an electrolyte comprising tetraethylammonium tetrafluoroborane in acetonitrile,
- iii. a specific surface area of at least 500 m2/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 elemental silicon.
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. carbon material comprising:
- i. a pore structure having micropores and mesopores,
- ii. a maximum theoretical capacitance greater than 20 F/cm3 as measured at a current density of 0.5 Amp/g employing an electrolyte comprising tetraethylammonium tetrafluoroborane in acetonitrile,
- iii. a pore volume of at least 0.5 cm3/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 elemental silicon.
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 volume totaling at least 0.5 cc/g, wherein the total pore volume comprises micropores and mesopores,
- ii. a GM greater than or equal to 21, and
- iii. 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 disposed within the pore volume of the carbon material, wherein the electrochemical modifier comprises elemental silicon,
- wherein GM is measured as a ratio of a BET specific surface area of the carbon material and the pore volume of the carbon material multiplied by 100, such that the GM is calculated according to the equation below wherein the BET specific surface area is in units m2/g and the pore volume is in units cm3/g:
- G
-
- M
- =
- [
- BET
-
- Specific
-
- Surface
-
- Area
- (
- m
- 2
- g
- )
- ]
- [
- 100
- ×
- Pore
-
- Volume
- (
- cm
- 3
- g
- )
- ]
- .
Dependencies are inferred from the claim text.