Plating metal negative electrodes under protective coatings

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United States of America Patent

PATENT NO 6402795
SERIAL NO

09139603

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Abstract

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A method for forming lithium electrodes having protective layers involves plating lithium between a lithium ion conductive protective layer and a current collector of an 'electrode precursor.' The electrode precursor is formed by depositing the protective layer on a very smooth surface of a current collector. The protective layer is a glass such as lithium phosphorus oxynitride and the current collector is a conductive sheet such as a copper sheet. During plating, lithium ions move through the protective layer and a lithium metal layer plates onto the surface of the current collector. The resulting structure is a protected lithium electrode. To facilitate uniform lithium plating, the electrode precursor may include a 'wetting layer' which coats the current collector.

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Patent Owner(s)

Patent OwnerAddress
POLYPLUS BATTERY COMPANY2424 SIXTH STREET BERKELEY CA 94710

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chu, May-Ying Oakland, CA 29 4219
De, Jonghe Lutgard C Lafayette, CA 90 5202
Visco, Steven J Berkeley, CA 211 13471

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