US 2018/0294476 A1 · Lithium Metal Secondary Battery Containing an Anode-Protecting Polymer Layer and Manufacturing Method

Abstract

Provided is lithium secondary battery comprising a cathode, an anode, and an electrolyte or separator-electrolyte assembly disposed between the cathode and the anode, wherein the anode comprises: (a) a foil or coating of lithium or lithium alloy as an anode active material; and (b) a thin layer of a high-elasticity polymer having a recoverable tensile strain no less than 5%, a lithium ion conductivity no less than 10−6 S/cm at room temperature, and a thickness from 1 nm to 10 μm, wherein the high-elasticity polymer contains an ultrahigh molecular weight polymer having a molecular weight from 0.5×106 to 9×106 g/mole and is disposed between the lithium or lithium alloy and the electrolyte or separator-electrolyte assembly.

Claims44

Dependent claims

A lithium secondary battery comprising a cathode, an anode, and an electrolyte or separator-electrolyte assembly disposed between said cathode and said anode, wherein said anode comprises:

a) a foil or coating of lithium or lithium alloy as an anode active material;
and
b) a thin layer of a high-elasticity polymer having a recoverable tensile strain no less than 5%, a lithium ion conductivity no less than 10−6 S/cm at room temperature, and a thickness from 1 nm to 10 μm, wherein said high-elasticity polymer contains an ultrahigh molecular weight polymer having a molecular weight from 0.5×106 to 9×106 grams/mole and is disposed between said lithium or lithium alloy and said electrolyte or separator-electrolyte assembly.

Dependencies are inferred from the claim text.

Lithium Metal Secondary Battery Containing an Anode-Protecting Polymer Layer and Manufacturing Method

Life of this patent

Lithium Metal Secondary Battery Containing an Anode-Protecting Polymer Layer and Manufacturing Method

Life of this patent

Abstract

Claims44