Multi-layer based new conceptual battery type supercapacitor with high power density and high energy density and method for preparing the same
US9704654B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 16, 2015 |
| Grant date | Jul 11, 2017 |
| Priority date | — |
| Expiry date | Mar 23, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/13
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Supercapacitor is an energy storage device with high power density and low energy density, and is normally used with a battery to satisfy one's needs for high power density and high energy density. The present invention provides a method to fabricate a novel battery type supercapacitor, with a multi-layered structure composed of a plurality of thin layers which is formed by alternately stacking high specific energy battery material and/or supercapacitor material such as metal oxides, metal hydroxides, metal sulfides, conductive polymers, carbon materials with reduced graphene oxide (rGO), to obtain a supercapacitor with both high specific energy density and high specific power density. Such a novel multi-layered structure composed of a plurality of thin layers formed by alternately stacking battery or capacitor material and rGO can not only ensure the obtained electrode to greatly improve the diffusion control of reaction particles, but also enhance its kinetic characteristic, so as to achieve both high power density and high energy density when used as a capacitor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.