Universally compatible, multifunctional safety layer for battery cell

Abstract

A battery cell may include an electrolyte, a first electrode, a second electrode, and a separator interposed between the first electrode and the second electrode. One or both of the first electrode and the second electrode may include a multifunctional safety layer interposed between an electrode layer and a current collector. The multifunctional safety layer may include a protective layer and a safety layer. The safety layer may respond to a first trigger by interrupting current flow within the battery cell. The protective layer may prevent a reaction between the safety layer and the electrolyte and/or the electrode layer of the battery cell. The protective layer may respond to a second trigger by exposing the safety layer to the electrolyte and/or the electrode layer of the battery cell. The resulting physical and/or chemical reactions may interrupt the current flow in the battery cell.

Dependencies are inferred from the claim text.