Method and system for functional conductive polymer initiated cathode electrolyte interface for silicon anode-based lithium ion batteries

A method of forming a battery, the method comprising:

• forming a battery comprising a -silicon-based anode, an electrolyte, and a cathode, wherein the cathode comprises an active material and a conductive polymer monomer additive comprising an a thiophene;
• wherein the conductive polymer monomer additive comprises 1% or less by weight of the active material;
• wherein the anode comprises an active material that comprises between 50% to 95% silicon;
• and
• wherein said thiophene is at least one thiophene selected from 3,4-difluoro-2,5-bis(trimethylsilyl)thiophene (DFBTST) and thiophene-2-carboxylic anhydride (TCA).

A cathode, the cathode comprising:

• an active material and at least one conductive polymer monomer additive comprising a thiophene, wherein
• the thiophene is 3,4-difluoro-2,5-bis(trimethylsilyl)thiophene (DFBTST), or thiophene-2-carboxylic anhydride (TCA);
• and
• wherein the conductive polymer monomer additive comprises 1% or less by weight of the active material.