Thermal responsive electrode structure for lithium-ion batteries

A thermally-decomposable consolidated polymer particle coated electrode for a lithium-ion battery comprising:

• an electrode selected from a cathode including a lithium-based material selected from the group consisting of lithium manganese oxide (LMO), lithium cobalt oxide (LCO), lithium nickel manganese cobalt oxide (NMC), and lithium iron phosphate (LFP), or an anode selected from the group consisting of graphene, graphite, lithium titanate (LTO), a silicon compound, a silicon carbon composite, a tin-containing compound, and a tin-based composite;
• a consolidated crosslinked polymer particle coating forming a porous structure from 3 μm to 40 μm on at least one surface of the electrode, the consolidated crosslinked polymer particle coating consisting essentially of a crosslinked cyclotriphosphazene and a binder having the following structure:
• wherein a crosslinker R is selected from one of the following:
• the consolidated crosslinked polymer particle coating having a porosity of approximately 25% to 80% and wherein the at least one crosslinker R is in an amount of approximately from 25% to 50% by weight of the polymer particles, the diameter of the polymer particle is approximately from 0.05 μm to 8 μm;
• the pressure resistance of the consolidated crosslinked polymer particle coating ranges approximately from 0.5 to 8 MPa;
• and
• wherein the consolidated crosslinked polymer particle coating decomposes to release a non-flammable gas and phosphorus-containing molecules to prevent fire and thermal runaway at a temperature from approximately 300° C. to 500° C.