Asymmetrical supercapacitor with alkaline electrolyte comprising a three-dimensional negative electrode and method for producing same
US9666381B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 7, 2014 |
| Grant date | May 30, 2017 |
| Priority date | — |
| Expiry date | May 29, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/13
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An asymmetrical supercapacitor including an alkaline electrolyte, at least one separator, at least one positive electrode including a nickel-based hydroxide and a nickel-based current collector, and at least one negative electrode including a nickel-based current collector and having a porous three-dimensional structure. Some pores are open, the mean diameter of the open pores being greater than or equal to 100 μm and being less than or equal to 300 μm and two contiguous open pores (1, 2) communicate by at least one opening (5) the mean diameter of which is greater than or equal to 35 μm and less than or equal to 130 μm. The three-dimensional structure includes a mixture including at least one activated carbon, at least one electron-conducting additive, and a binding agent including at least one elastomer polymer and at least one thickening polymer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.