Oxide shell formation on inorganic substrates via lithium polyoxoanion salt deposition
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United States of America Patent
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Apr 25, 2017
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Dec 31, 2015
app pub date -
Mar 12, 2013
filing date -
Mar 12, 2013
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Abstract
The present invention provides a process for depositing an oxide coating on an inorganic substrate, including providing an aqueous composition containing a tetraalkylammonium polyoxoanion and lithium hydroxide; contacting the aqueous composition with an inorganic substrate for a time sufficient to deposit a lithium polyoxoanion on surfaces of the inorganic substrate to form an initially coated inorganic substrate; and heating the initially coated inorganic substrate for a time sufficient to convert the lithium polyoxoanion to an oxide to form on the inorganic substrate an oxide coating derived from the polyoxoanion. The inorganic substrate may be a ceramic material or a semiconductor material, a glass or other dielectric material, and the ceramic material may be a lithium ion battery cathode material.
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