Lithium storage battery comprising a current-electrode collector assembly with expansion cavities and method for producing same
First Claim
1. A lithium storage battery comprising at least an electrolyte and a stack comprising:
- an electrode,a current collector comprising a plurality of recessed zones delineated by side walls each comprising a free end,and expansion cavities for the electrode,wherein;
the electrode comprises at least a continuous thin layer covering the free end of the side walls of the current collector,the electrolyte is formed by an electrolytic membrane in the form of a solid thin layer deposited on said stack,each expansion cavity is formed in a recessed zone and comprises at least a wall formed by the continuous thin layer of the electrode.
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Abstract
A lithium storage battery comprises a stack formed by a current collector comprising recessed zones, an electrode and a plurality of expansion cavities for the material forming the electrode. Each expansion cavity comprises at least one wall formed by a part of the electrode. Preferably the electrode is an electrode formed by at least one material able to insert and de-insert Li+ ions, the volume of which material increases when Li+ ions are inserted. The empty volume of the expansion cavities can thus be at least partially filled by a part of the material forming the electrode when Li+ cations are inserted in the material. The expansion cavities are formed in the recessed zones of the current collector.
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Citations
16 Claims
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1. A lithium storage battery comprising at least an electrolyte and a stack comprising:
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an electrode, a current collector comprising a plurality of recessed zones delineated by side walls each comprising a free end, and expansion cavities for the electrode, wherein; the electrode comprises at least a continuous thin layer covering the free end of the side walls of the current collector, the electrolyte is formed by an electrolytic membrane in the form of a solid thin layer deposited on said stack, each expansion cavity is formed in a recessed zone and comprises at least a wall formed by the continuous thin layer of the electrode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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Specification