Dry particle based capacitor and methods of making same
AssigneeMaxwell Technologies, Inc.
InventorsLinda Zhong, Xiaomei Xi, Porter Mitchell, Bin Zou
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Abstract
An inexpensive and reliable dry process based capacitor and method for making a self-supporting dry electrode film for use therein is disclosed. Also disclosed in an exemplary process for manufacturing an electrode for use in an energy storage device product, the process comprising: supplying dry carbon particles; supplying dry binder; dry mixing the dry carbon particles and dry binder; and dry fibrillizing the dry binder to create a matrix within which to support the dry carbon particles as dry material.
Claims81
A process for manufacturing an electrode for use in an energy storage device product, the process comprising the steps of:
- supplying dry carbon particles;
- supplying dry binder;
- dry mixing the dry carbon particles and dry binder;
- and
- dry fibrillizing the dry binder to create a matrix within which to support the dry carbon particles as a dry material.
A method of manufacturing an electrode, comprising the steps of:
- mixing dry carbon and dry binder particles;
- and forming a self-supporting film from the dry particles without the use of any processing additives.
An energy storage device product, comprising:
- a self supporting film comprising of a dry mix of dry carbon and dry binder particles.
An energy storage device product, comprising:
- one or more self-supporting dry film comprising a dry fibrillized mix of dry binder and dry carbon particles.
The product of clalm 42, wherein the substrate comprises a collector.
An energy storage product, comprising:
- a dry fibrillized mix of dry binder and dry conductive particles formed into a continuous self supporting electrode film without the use or any processing additives.
A capacitor, comprising a film, the film including a dry fibrillized mix of dry binder and dry carbon particles, the film coupled to a collector, the collector shaped into a roll, the roll impregnated with an electrolyte and disposed within a sealed aluminum housing.
An energy storage product, comprising:
- a dry fibrillized mix of dry binder and dry conductive particles formed into a continuous self supporting electrode film without the use of any processing additives;
- wherein after 1 month of immersion in an acetonitrile type of electrolyte the film shows no visual damage.
A capacitor, comprising:
- a double-layer electrode immersed in an electrolyte, wherein when charged at 100 amps to 2.5 volts and then discharged to 1.25 volts over 1,500,000 cycles the capacitor experiences less than a 30 percent drop in capacitance.
A method of using a capacitor, comprising the steps of:
- a. charging the capacitor from 1.25 volts to 2.5 volts at 100 amps;
- b. discharging the capacitor to 1.25 volts;
- and
- c. measuring less than a 30% drop in an initial capacitance of the capacitor after repeating step (a.) and step (b.) 70,000 times.
A method of using a capacitor, comprising the steps of:
- b. charging the capacitor from 1.25 volts to 2.5 volts at 100 amps;
- b. discharging the capacitor to 1.25 volts;
- and
- c. measuring less than a 5% drop in an initial capacitance of the capacitor after repeating step (a.) and step (b.) 70,000 times.
An energy storage device, comprising:
- dry process based electrode means for providing conductive electrode functionality in an energy storage device.
A solventless method for manufacture of an energy storage device electrode, comprising the steps of:
- providing dry carbon particles;
- providing dry binder particles;
- and forming the dry carbon and dry binder particles into an energy storage device electrode without the substantial use of any solvent.
A solventless method for manufacture of an energy storage device electrode, comprising the steps of:
- providing dry carbon particles;
- providing dry binder particles;
- and intermixing the dry carbon and dry binder particles to form an energy storage device electrode without the use of any solvent.
Dependencies are inferred from the claim text.