NOVELTY - A non-aqueous electrolyte secondary battery comprises a positive electrode (1), a negative electrode (2), and a porous insulating layer (3) interposed between the positive electrode and the negative electrode. The positive electrode and the negative electrode have a mixture layer containing an active material in which lithium ions are electrochemically intercalatable and deintercalatable. A non-aqueous electrolyte is contained at least in the porous insulating layer. The mixture layer of the positive electrode and the porous insulating layer contain a structure retainer.    USE - Non-aqueous electrolyte secondary battery such as lithium ion secondary battery is used as power source for electronic devices, power storage and electric vehicles.    ADVANTAGE - The non-aqueous electrolyte secondary battery has excellent capacitance and cyclic characteristics.    DETAILED DESCRIPTION - A non-aqueous electrolyte secondary battery comprises a positive electrode, a negative electrode, and a porous insulating layer interposed between the positive electrode and the negative electrode. The positive electrode and the negative electrode have a mixture layer containing an active material in which lithium ions are electrochemically intercalatable and deintercalatable. A non-aqueous electrolyte is contained at least in the porous insulating layer. The mixture layer of the positive electrode contains a structure retainer. The porous insulating layer contains a structure retainer or is formed by a structure retainer. The mixture layer of the negative electrode also contains the structure retainer. The structure retainer contained in the porous insulating layer and the mixture layer of the positive electrode is ceramic granules having shape of twigs.    DESCRIPTION OF DRAWING(S) - The drawing shows the cross sectional view of the non-aqueous electrolyte secondary battery.    Positive electrode (1)    Negative electrode (2)    Porous insulating layer (3)    Electrode assembly (4)    Resin outer gasket (11)