Rechargeable lithiated thin film intercalation electrode battery
US5110696A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 22, 1991 |
| Grant date | May 5, 1992 |
| Priority date | — |
| Expiry date | Jul 22, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49115
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A Thin film electrode for a rechargeable (secondary) battery is prepared by electron beam deposition of LiMn.sub.2 O.sub.4, LiCoO.sub.2, or LiNiO.sub.2 on a smooth, amorphous substrate surface and in situ annealing of the deposited lithium composition at a temperature below about 500.degree. C. The amorphous nature of the substrate surface prevents epitaxial growth or ordered orientation of the minute composition crystallites thus formed. The finely granular structure of the resulting electrode thin film presents abundant surface area that enables a 4V battery to provide current densities in the range of 500 microamps/cm.sup.2. The low annealing temperature enables formation of the electrode structure and subsequent battery assembly directly upon semiconductor devices and integrated circuitry.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.