Hydrothermally grown BaTiO3, SrTiO3, and BaxSr1-xTiO3 on TiO2 nanotube layers for ultra-high charge density capacitors
US10811197B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 21, 2016 |
| Grant date | Oct 20, 2020 |
| Priority date | — |
| Expiry date | May 18, 2037 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/13
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Various examples are provided for hydrothermally grown BaTiO3, SrTiO3, and BaxSr1−xTiO3 on TiO2 nanotube layers, which can be used in ultra-high charge density capacitors. In one example, a method includes forming a first anodized titanium oxide (ATO) layer on a layer of titanium by anodization, the first ATO layer having a nanotubular morphology; removing the first ATO layer from the layer of titanium; forming a second ATO layer having a nanotubular morphology on the layer of titanium by anodization; and hydrothermally growing a layer of MTiO3 on a surface of the second ATO layer, where M is Ba, Sr, or BaxSr1−x. In another example, an ultra-high density charge capacitor includes a first electrode layer; an ATO layer disposed on the first electrode layer; a layer of MTiO3 on a surface of the ATO layer; and a second electrode layer disposed on the layer of MTiO3.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.