Abstract:
A sorbent structure that includes a continuous body in the form of a flow-through substrate comprised of at least one cell defined by at least one porous wall. The continuous body comprises a sorbent material carbon substantially dispersed within the body. Further, the temperature of the sorbent structure can be controlled by conduction of an electrical current through the body.
Abstract:
A lithium ion energy and power system including: a housing containing: at least three electrodes including: at least one first electrode including a cathodic faradaic energy storage material; at least one second electrode including an anodic faradaic energy storage material; and at least one third electrode including a cathodic non-faradaic energy storage material, wherein the at least one first, second, and third electrodes are adjacent as defined herein, and the at least one second electrode is electrically isolated from the electrically coupled at least one first electrode and the at least one third electrode; a separator between the electrodes; and a liquid electrolyte between the electrodes. Also disclosed is a method of making and using the disclosed lithium ion energy and power system.
Abstract:
A method for pre-doping a lithium ion capacitor, including: compressing a lithium ion capacitor of the formula: C/S/A/S/C/S/A/S/C, where: /A/ is an anode coated on both sides with an anode carbon layer, and each anode carbon layer is further coated with lithium composite powder (LCP) layer; C/ is a cathode coated on one side with a layer of an cathode carbon mixture; and S is a separator; and a non-aqueous electrolyte; and conditioning the resulting compressed lithium ion capacitor, for example, at a rate of from C/20 to 4C, and the conditioning redistributes the impregnated lithium as lithium ions in the anode carbon structure. Also disclosed is an carbon coated anode having lithium composite powder (LCP) layer compressed on the carbon coated anode.
Abstract:
A method for pre-doping a lithium ion capacitor, including: compressing a lithium ion capacitor of the formula: C/S/A/S/C/S/A/S/C, where: /A/ is an anode coated on both sides with an anode carbon layer, and each anode carbon layer is further coated with lithium composite powder (LCP) layer; C/ is a cathode coated on one side with a layer of an cathode carbon mixture; and S is a separator; and a non-aqueous electrolyte; and conditioning the resulting compressed lithium ion capacitor, for example, at a rate of from C/20 to 4C, and the conditioning redistributes the impregnated lithium as lithium ions in the anode carbon structure. Also disclosed is an carbon coated anode having lithium composite powder (LCP) layer compressed on the carbon coated anode.
Abstract:
A carbon-based electrode includes activated carbon, carbon black, and a binder. The binder is fluoropolymer having a molecular weight of at least 500,000 and a fluorine content of 40 to 70 wt. %. A method of forming the carbon-based electrode includes providing a binder-less conductive carbon-coated current collector, pre-treating the carbon coating with a sodium napthalenide-based solution, and depositing onto the treated carbon coating a slurry containing activated carbon, carbon black and binder.
Abstract:
Carbon-based electrodes such as for incorporation into ultracapacitors or other high power density energy storage devices, include activated carbon, carbon black, binder and at least one molecular sieve material. The molecular sieve component can adsorb and trap water, which can facilitate the use of the device at higher voltage, such as greater than 3V. The molecular sieve material may be incorporated into the carbon-based electrodes or formed as a layer over a carbon-based electrode surface.
Abstract:
An electric double layer capacitor comprises first and second electrodes, each comprising respective first and second carbon materials having distinct pore size distributions. A pore volume ratio of the first carbon material is greater than a pore volume ratio of the second carbon material. The pore volume ratio R is defined as R=V1/V, where V1 is a total volume of pores having a pore size of less than 1 nm, and V is a total volume of pores having a pore size greater than 1 nm.
Abstract:
A lithium ion energy and power system including: a housing containing: at least three electrodes including: at least one first electrode including a cathodic faradaic energy storage material; at least one second electrode including an anodic faradaic energy storage material; and at least one third electrode including a cathodic non-faradaic energy storage material, wherein the at least one first, second, and third electrodes are adjacent as defined herein, and the at least one second electrode is electrically isolated from the electrically coupled at least one first electrode and the at least one third electrode; a separator between the electrodes; and a liquid electrolyte between the electrodes. Also disclosed is a method of making and using the disclosed lithium ion energy and power system.
Abstract:
An anode in a lithium ion capacitor, including: a carbon composition comprising: a phenolic resin sourced carbon, a conductive carbon, and a binder as defined herein; and an electrically conductive substrate supporting the carbon composition, wherein the phenolic resin sourced carbon has a disorder by Raman analysis as defined herein; and a hydrogen content; a nitrogen content; an and oxygen content as defined herein. Also disclosed is a method of making the anode, a method of making the lithium ion capacitor, and methods of use thereof.
Abstract:
A cathode in a lithium ion capacitor, including: a carbon composition comprising: an activated carbon; a conductive carbon; and a binder in in amounts as defined herein; and a current collector that supports the carbon composition, wherein the activated carbon has: a surface area of from 500 to 3000 m2/g; a pore volume where from 50 to 80% of the void volume is in pores less than 10 Å; a pore volume higher than 0.3 cm3/gm occupied by the micropores less than 10 Å; and a microporosity of greater than 60% of the total pore volume. Also disclosed is a method of making the cathode and using the cathode in a lithium ion capacitor.