Protective coating for separators for electrochemical cells
AssigneeMoltech Corporation
InventorsQicong Ying, Steven A. Carlson, Terje A. Skotheim
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Abstract
This invention pertains to separators for use in electrochemical cells which comprise at least one microporous pseudo-boehmite layer, which separator is in contact with at least one protective coating layer positioned on the anode-facing side of the separator opposite from the cathode active layer in the cell; electrolyte elements comprising such separators; electrical current producing cells comprising such separators; and methods of making such separators, electrolyte elements and cells.
Claims24
An electrolyte element for use in an electric current producing cell, wherein said electric current producing cell comprises a cathode having a cathode active layer, an anode, and said electrolyte element interposed between said cathode and said anode, wherein said electrolyte element comprises a separators an electrolyte, and one or more protective coating layers;
- and said separator comprises one or more microporous pseudo-boehmite layers;
- and wherein at least one of said one or more protective coating layers is on the anode-facing side of said electrolyte element on the side opposite from said cathode and is interposed between said anode and said separator.
An electric current producing cell comprising a cathode comprising a cathode active layer, an anode, and an electrolyte element interposed between said cathode and said anode, wherein said electrolyte element comprises;
- (a) a separator;
- (b) an electrolyte;
- and
- (c) one or more protective coating layers;
- wherein said separator comprises one or more microporous pseudo-boehmite layers;
- and wherein at least one of said one or more protective coating layers is on the anode-facing side of said electrolyte element on the side opposite from said cathode and is interposed between said anode and said separator, and said electrolyte is contained within the pores of said separator.
An electric current producing cell comprising a cathode, an anode, and an electrolyte element interposed between said cathode and said anode, wherein said electrolyte element comprises:
- (a) a separator;
- and
- (b) an organic electrolyte;
- wherein said separator comprises a microporous pseudo-boehmite layer, wherein said separator is in contact with a protective coating layer comprising a polymer;
- and wherein said organic electrolyte is contained within the pores of said separator.
Dependencies are inferred from the claim text.