Patent ID: 11870037
Assignee: APPLE INC.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  C  Y | IPC C  H

Claim 8:
9. A battery cell comprising:
a first current collector;
a cathode active material disposed along the first current collector;
a second current collector;
an anode active material disposed along the second current collector;
a separator disposed between the cathode active material and the anode active material, wherein the separator comprises a ceramic material layer characterized by a thickness less than about 10 μm, wherein the ceramic material layer comprises (i) ceramic particles characterized by a specific surface area of at least about 100 m2/g, (ii) a binder forming polymer chains among the ceramic particles, (iii) a microencapsulated material comprising a first material contained within a second material, wherein the second material is characterized by a breakdown temperature of greater than or about 100° C., and wherein based on the breakdown temperature, the first material is configured to be released from the second material to flow and fill pores within the separator, and (iv) a porogen, and wherein the ceramic material layer is positioned adjacent the anode active material along a second surface of the ceramic material layer opposite a first surface of the ceramic material layer; and
a polymer adhesive layer disposed between
the first surface of the ceramic material layer and the cathode active material, wherein the polymer adhesive layer comprises an adhesive that binds the cathode active material and the ceramic material layer.