H - Electricity – 01 – M
Patent
H - Electricity
01
M
H01M 4/48 (2006.01) C23C 14/08 (2006.01) H01M 4/50 (2006.01) H01M 4/52 (2006.01) H01M 10/40 (2006.01)
Patent
CA 2095346
A thin film electrode (10) for a rechargeable (secondary) battery is prepared by electron beam deposition of LiMn2O4, Li- CoO2, or LiNiO2 on a smooth, amorphous substrate surface (14) and in situ annealing of the deposited lithium composition at a temperature below about 500 °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 (16) presents abundant surface area that enables a 4V battery to provide current densities in the range of 500 mic- roamps/cm2. The low annealing temperature enables formation of the electrode structure and subsequent battery assembly directly upon semiconductor devices and integrated circuitry.
Shokoohi Frough Keyvan
Tarascon Jean-Marie
Bell Communications Research Inc.
Kirby Eades Gale Baker
LandOfFree
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