MINIATURE ELECTROCHEMICAL CELL HAVING A CASING OF A CONDUCTIVE PLATE CLOSING AN OPEN-ENDED CERAMIC CONTAINER HAVING TWO VIA HOLES SUPPORTING OPPOSITE POLARITY PLATINUM-CONTAINING CONDUCTIVE PATHWAYS
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United States of America
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Apr 22, 2021
app pub date -
Oct 17, 2019
filing date -
Oct 17, 2019
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Abstract
A miniature electrochemical cell having a volume of less than 0.5 cc is described. The cell casing comprises an open-ended ceramic container having first and second via holes providing respective first and second electrically conductive pathways extending through the container. A metal lid secured to the open-end of the container by a gold seal provides the cell casing. An electrode assembly housed inside the casing comprises a cathode active material deposited on an inner surface of the ceramic container in contact with a current collector in electrical continuity with one of the conductive pathways. A solid electrolyte, preferably of LiPON (LixPOyNz), is deposited on the cathode active material followed by an anode active material in contact with the other conductive pathway. The first and second conductive pathways can comprise platinum or gold. That way, the first and second conductive pathways serve as negative and positive terminals for the cell. The negative and positive terminals are configured for electrical connection to a load.
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