Electrochemical energy storage devices and manufacturing methods
AssigneeAVX Corporation
InventorsBharat Rawal, Carl L. Eggerding, Bob Knopsnyder
Life of this patent
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Abstract
An ultra-thin electrochemical energy storage device is provided which utilizes electrode material with multi-layer current collectors and with an organic electrolyte between the electrodes. Multiple cells may be positioned in a plurality of stacks and all of the cells may be in series, parallel or some combination thereof. The energy storage device can be constructed at less than 0.5 millimeters thick and exhibit very low ESR and higher temperature range capabilities.
Claims36
An ultra-thin electrochemical energy storage device, comprising:
- a pair of respective internal electrodes with electrolyte;
- a separator layer between said respective electrodes;
- a pair of respective current collectors, with one each of said current collectors respectively outside each of said electrodes;
- and
- a case surrounding said current collectors, and having a respective pair of terminals connected respectively with said current collectors;
- wherein the contents of said case have a thickness down to less than 0.5 millimeters;
- and
- wherein said device has a resistivity of no more than about 1.5 Ω·cm2 of electrode area.
An ultra-thin, ultra-low ESR supercapacitor, comprising:
- a pair of respective internal electrodes with organic electrolyte;
- an ultra-thin separator layer between said respective electrodes;
- a pair of respective multi-layer current collectors, with one each of said current collectors respectively outside each of said electrodes;
- and
- a case surrounding said current collectors, and having a respective pair of terminals connected respectively with said current collectors;
- wherein the contents of said case have a thickness down to less than 0.5 millimeters, and a moisture content of no more than about 10 ppm, and
- said supercapacitor has a resistivity of no more than about 1.5 Ω·cm2 of electrode area, capacitance density of at least about 10 Farads per cc of active electrode volume, and a temperature operational range rating of −40° to 70° C.
Methodology for manufacturing an ultra-thin electrochemical energy storage device, comprising:
- providing a pair of respective internal electrodes with electrolyte, and with a separator layer between such respective electrodes;
- providing a pair of respective current collectors, with one each of such current collectors respectively outside each of such electrodes;
- and
- surrounding such current collectors with a case having a respective pair of terminals connected respectively with such current collectors;
- wherein the contents of such case have a thickness down to less than 0.5 millimeters;
- and
- wherein said device has a resistivity of no more than about 1.5 Ω·cm2 of electrode area.
Methodology for making an ultra-thin, ultra-low ESR supercapacitor, comprising:
- providing a pair of respective internal electrodes with organic electrolyte, and with an ultra-thin separator layer between such respective electrodes;
- providing a pair of respective multi-layer current collectors, with one each of such current collectors respectively outside each of such electrodes;
- and
- surrounding such current collectors with a case having a respective pair of terminals connected respectively with such current collectors;
- wherein the contents of said case have a thickness down to less than 0.5 millimeters, and said methodology is performed in a controlled environment having a moisture content of no more than about 10 ppm, and
- said supercapacitor has a resistivity of no more than about 1.5 Ω·cm2 of electrode area, capacitance density of at least about 10 Farads per cc of active electrode volume, and a temperature operational range rating of −40° to 70° C.
Dependencies are inferred from the claim text.