Methods for forming activated carbon material for high energy density ultracapacitors
AssigneeCorning Incorporated
InventorsKishor Purushottam Gadkaree, Joseph Frank Mach
Life of this patent
Estimating the term…
Abstract
A method for producing an activated carbon material includes forming an aqueous mixture of a natural, non-lignocellulosic carbon precursor and an inorganic compound, heating the mixture in an inert or reducing atmosphere, cooling the heated mixture to form a first carbon material, and removing the inorganic compound to produce an activated carbon material. The activated carbon material is suitable to form improved carbon-based electrodes for use in high energy density devices.
Claims21
A method for producing an activated carbon material comprising:
- forming an aqueous mixture consisting essentially of a natural, non-lignocellulosic carbon precursor selected from the group consisting of wheat flour, corn flour, rice flour and potato flour, and an inorganic compound;
- heating the aqueous mixture in an inert or reducing atmosphere to form a first carbon material;
- and
- removing the inorganic compound from the first carbon material to produce a powdered activated carbon material.
A method for producing a carbon-based electrode comprising:
- forming an aqueous mixture consisting essentially of a natural, non-lignocellulosic carbon precursor selected from the group consisting of wheat flour, corn flour, rice flour and potato flour, and an inorganic compound;
- heating the aqueous mixture in an inert or reducing atmosphere to form a first carbon material;
- removing the inorganic compound from the first carbon material to produce an activated carbon material;
- mixing the activated carbon material with at least one of carbon black and PTFE to form an electrode mixture;
- and
- forming a carbon-based electrode from the electrode mixture.
A method for producing an activated carbon material comprising:
- heating a natural, non-lignocellulosic carbon precursor selected from the group consisting of wheat flour, corn flour, rice flour and potato flour in an inert or reducing atmosphere to form a first carbon material;
- mixing the first carbon material with an inorganic compound to form a mixture that consists essentially of the first carbon material and the inorganic compound;
- heating the mixture in an inert or reducing atmosphere to incorporate the inorganic compound into the first carbon material;
- and
- removing the inorganic compound from the first carbon material to produce an activated carbon material.
A method for producing a carbon-based electrode comprising:
- heating a natural, non-lignocellulosic carbon precursor selected from the group consisting of wheat flour, corn flour, rice flour and potato flour in an inert or reducing atmosphere to form a first carbon material;
- mixing the first carbon material with an inorganic compound to form a mixture that consists essentially of the first carbon material and the inorganic compound;
- heating the mixture in an inert or reducing atmosphere to incorporate the inorganic compound into the first carbon material;
- removing the inorganic compound from the first carbon material to produce an activated carbon material;
- and
- forming a carbon-based electrode from the activated carbon material.
A method for producing a carbon-based electrode comprising:
- heating a natural, non-lignocellulosic carbon precursor selected from the group consisting of wheat flour, corn flour, rice flour and potato flour in an inert or reducing atmosphere to form an intermediate carbon material that consists essentially of the natural, non-lignocellulosic carbon precursor;
- heating the intermediate carbon material in an oxidizing atmosphere to produce an activated carbon material powder;
- and
- forming a carbon-based electrode from the activated carbon material powder.
Dependencies are inferred from the claim text.