Light transparent multilayer moisture barrier for electrochemical cell tester and cell employing same
AssigneeDuracell Inc.
InventorsJack Treger, Bryan C. Lagos, John B. Fenn, H. Frank Gibbard, Guang Wei
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Abstract
A light transparent moisture barrier useful for preventing moisture from destroying the effectiveness of a moisture sensitive cell condition tester on an electrochemical cell comprises a plurality of very thin, alternating layers of an inorganic material and an organic material on a flexible, polymeric substrate. The layers are not laminated, but are formed on the substrate by a deposition or coating process and the thickness of any layer is less than 5 microns. The organic material is a hydrophobic polymer and the inorganic material is a metal oxide, nitride, a glass or silicon.
Claims18
An electrochemical cell having a moisture sensitive cell condition tester and a light transparent moisture barrier, wherein said moisture barrier comprises a composite on a polymeric substrate, said composite comprising at least three alternating layers of a water insoluble inorganic material selected from the group consisting of at least one inorganic compound, silicon and mixture thereof and a water insoluble organic material wherein the thickness of said inorganic compound layers and said organic compound layers ranges between about 100 to 10,000 angstroms and between about 100 angstroms to 5 microns, respectively.
Dependencies are inferred from the claim text.