NOVELTY - A non-aqueous electrolyte secondary battery comprises anode (5) including conductive anode collector and anode material mixture layer containing lithium composite oxide supported on anode collector, cathode (6) including conductive cathode collector and cathode material mixture layer containing cathode active material, non-aqueous electrolyte supported between the anode and cathode, porous insulating layer (7) containing material which does not have shutdown function and positive temperature coefficient layer.    USE - Non-aqueous electrolyte secondary battery such as lithium ion secondary battery.    ADVANTAGE - The non-aqueous electrolyte secondary battery is safe, and has high energy density.    DETAILED DESCRIPTION - A non-aqueous electrolyte secondary battery comprises anode including conductive anode collector and anode material mixture layer containing lithium composite oxide supported on the anode collector, cathode including a conductive cathode collector and cathode material mixture layer containing cathode active material which is capable of electrochemically absorbing and desorbing lithium ions is supported on the cathode collector, non-aqueous electrolyte supported between the anode and cathode, porous insulating layer provided between the anode and cathode material mixture layer and contains a material which does not have shutdown function and positive temperature coefficient layer provided on at least one of the anode and cathode to extend parallel to at least one of the anode and collector, and contains material having positive temperature coefficient of resistance. The material having positive temperature coefficient of resistance is barium-titanium-metal oxide (BaTiMO2). The metal (M) is chosen from chromium, lead, calcium, strontium, cerium, manganese, lanthanum, yttrium, niobium and neodymium. The porous insulating layer includes metal compound layer containing metal compound chosen from magnesium oxide, silica, alumina and zirconium oxide. An INDEPENDENT CLAIM is included for manufacture of non-aqueous electrolyte secondary battery.    DESCRIPTION OF DRAWING(S) - The drawing shows the sectional view of the lithium ion secondary battery.    Battery case (1)    Sealing plate (2)    Anode (5)    Cathode (6)    Porous insulating layer (7)