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US 10,872,737 B2Granted
Advanced electrolytes for high temperature energy storage device
AssigneeFastcap Systems Corporation
InventorNicolò Michele Brambilla
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Abstract
An ultracapacitor that includes an energy storage cell immersed in an electrolyte and disposed within an hermetically sealed housing, the cell electrically coupled to a positive contact and a negative contact, wherein the ultracapacitor has a gel or polymer based electrolyte and is configured to output electrical energy at temperatures between about −40° C. and about 250° C. Methods of fabrication and use are provided.
Claims20
An electrolyte for use in an ultracapacitor comprising:
- an ionic liquid;
- and
- a gelling agent;
- wherein an ultracapacitor that utilizes the electrolyte is configured to output electrical energy at temperatures throughout an operating temperature range, wherein the operating temperature range comprises −40 degrees Celsius to 250 degrees Celsius;
- and wherein a level of halide impurities is no greater than 50 parts per million, by combined weight of a storage cell and electrolyte wherein the ultracapacitor comprises a storage cell that contains the electrolyte.
2 more elements
Dependencies are inferred from the claim text.