Battery with coating and preparation method therefor

A battery with a coating, wherein the coating comprises a coating I, a coating II, and a coating III covering at least a part of a surface of the battery,

• the coating I is a plasma polymerization coating formed by contacting at least a part of the surface of the battery with plasmas comprising a monomer α and a monomer β, the monomer α is a siloxane monomer, and the monomer β is an acrylic acid, an acrylic acid homologue, an ester of an acrylic acid, or an ester of an acrylic acid homologue;
• the coating II is a plasma polymerization coating formed on the coating I by contacting the coating I with plasmas comprising a monomer γ and a monomer δ, the monomer γ is an epoxy compound monomer comprising a carbon-carbon double bond structure, an epoxy compound monomer comprising a carbon-carbon triple bond structure or an epoxy compound monomer comprising two or more epoxy structures, and the monomer δ is an acrylic acid, an acrylic acid homologue, an ester of an acrylic acid, or an ester of an acrylic acid homologue;
• and
• the coating III is a plasma polymerization coating formed on the coating II by contacting the coating II with plasmas comprising a monomer ε, and the monomer ε is a cyclosiloxane monomer comprising 3-7 silicon atoms.