NONAQUEOUS ELECTROLYTE SECONDARY BATTERY

摘要

PROBLEM TO BE SOLVED: To provide a nonaqueous electrolyte secondary battery capable of suppressing a short circuit due to dendrite-like metal lithium even when the metal lithium is formed, without complicating the manufacturing process thereof.SOLUTION: A nonaqueous electrolyte secondary battery comprises: a positive electrode including a positive electrode active material layer capable of absorbing/desorbing lithium ions; a negative electrode including a negative electrode active material layer capable of absorbing/desorbing lithium ions; a separator; a nonaqueous electrolyte; and an insulating coating layer provided on the surface of the positive electrode active material layer and including inorganic fine particles capable of absorbing/desorbing lithium.