High energy density hybrid pseudocapacitors and method of making and using the same
US10217571B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 23, 2016 |
| Grant date | Feb 26, 2019 |
| Priority date | — |
| Expiry date | Sep 16, 2036 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/13
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A hybrid electrochemical energy storage device having the attributes of a high power supercapacitor and a lithium ion battery are described. The hybrid electrochemical energy storage device can be a pseudocapacitor with a cathode having a coated activated carbon powder having a coated activated carbon cathode. The coated activated carbon can provide for enhanced energy density and ion conductivity. The activated carbon powder is coated with metal oxides, metal nitrides, metal sulfides, metal phosphates, polymers, and ion conducting or solid electrolytes, and a mixture thereof. More specifically, the activated carbon powder can include two or more active materials, with one of the two or more active materials being carbonaceous particles that comprise from about 50 to about 100 wt % of the composition, and the other of the two or more active materials atomic deposition layers on the carbonaceous particles. The atomic deposited layers can be metal oxides, metal nitrides, metal sulfides, metal phosphates, polymers, and ion conducting or solid electrolytes, and a mixture thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.