Supercapacitor containing antifreezing zwitterion hydrogel electrolyte and preparation method thereof
US11710604B2 · kind B2 · utility
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Key dates
| Filing date | Nov 3, 2021 |
| Grant date | Jul 25, 2023 |
| Priority date | — |
| Expiry date | Nov 3, 2041 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/13
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A supercapacitor contains the zwitterionic polymer hydrogel electrolyte. A change rate of a capacitance retention of the supercapacitor, relative to a specific area capacity at 25° C. is less than 25% at extreme temperature. When temperature is increased to 60° C. or reduced to −30° C. the specific area capacity is changed to 178 mF cm−2 and 134 mF cm−2, which are 104% and 78% of that at 25° C. indicating an excellent electrochemical property at the extreme temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.