Multi-functional separator for a lithium secondary battery and manufacturing method
AssigneeHoneycomb Battery Company
InventorBor Z. Jang
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AssigneeHoneycomb Battery Company
InventorBor Z. Jang
Estimating the term…
A lithium secondary battery comprising a cathode, an anode, an elastic and flame retardant composite separator disposed between the cathode and the anode, and a working electrolyte. The elastic flame retardant composite separator comprises a high-elasticity polymer and from 1% to 99% by weight of a flame retardant additive dissolved in, dispersed in, or bonded to the high-elasticity polymer. The composite separator has a thickness from 50 nm to 100 μm and a lithium ion conductivity from 10−8 S/cm to 5×10−2 S/cm at room temperature and the high elasticity polymer has a fully recoverable tensile strain from 2% to 1,000% when measured without any additive dispersed therein. The polymer composite may further comprise particles of an optional inorganic solid electrolyte dispersed therein.
A lithium secondary battery comprising a cathode, an anode, an elastic and flame-retardant composite separator disposed between the cathode and the anode, and a working electrolyte through which lithium ions are transported between the anode and the cathode during a battery charge or discharge, wherein said elastic and flame-retardant composite separator comprises a high-elasticity polymer and from 0.1% to 95% by weight of a flame retardant additive dispersed in, dissolved in, or chemically bonded to the high-elasticity polymer, wherein said elastic composite separator has a thickness from 50 nm to 100 μm and a lithium ion conductivity from 10−8 S/cm to 5×10−2 S/cm at room temperature and said high elasticity polymer has a fully recoverable tensile strain from 2% to 1,000% when measured without any additive dispersed therein.
An elastic and flame retardant composite layer, wherein said elastic and flame retardant composite comprises a high-elasticity polymer and from 0.1% to 95% by weight of a flame retardant additive dispersed in, dissolved in, or chemically bonded to the high-elasticity polymer, wherein said elastic composite separator has a thickness from 50 nm to 100 μm and a lithium ion conductivity from 10−8 S/cm to 5×10−2 S/cm at room temperature and said high elasticity polymer has a fully recoverable tensile strain from 2% to 1,000% when measured without any additive dispersed therein.
Dependencies are inferred from the claim text.