Abstract: An aspect of the present invention is an electrode for an energy storage device including a conductive substrate, an intermediate layer, and an active material layer in this order. In this electrode, the intermediate layer includes a conductive agent, an inorganic oxide, and a binder, and the content of the inorganic oxide in the intermediate layer is 30% by mass or more and 90% by mass or less.

Abstract: A nonaqueous electrolyte battery wherein a power generating element formed by spirally winding a positive electrode plate and a negative electrode plate with a separator insulated therebetween, is accommodated in a case. Insulating tapes are adhered to end faces of the power generating element and to portions of side faces of the power generating element in the vicinities of the end faces along the winding direction of the positive electrode plate and the negative electrode plate. With this configuration, the insulating tapes are not deformed at the time when the power generating element is inserted into the case. Hence, it is possible to securely prevent a short circuit between the end faces of the power generating element and the inner faces of the case, and the permeability of the electrolytic solution is improved.

Abstract: The present invention provides a nonaqueous secondary battery and a separator to be used therein. The separator comprises a polyolefin membrane containing one or more conjugated polyene compounds provided on the surface thereof. The nonaqueous secondary battery having this arrangement performs improved cycle life characteristics and shelf characteristics at high temperatures.

Abstract: The present invention provides a nonaqueous secondary battery and a separator to be used therein. The separator comprises a polyolefin membrane containing one or more conjugated polyene compounds provided on the surface thereof. The nonaqueous secondary battery having this arrangement performs improved cycle life characteristics and shelf characteristics at high temperatures.