ELECTRODE MEMBER

An electrode member includes: a substrate that includes a resin substrate and a conductive layer provided on the resin substrate; and an active material layer provided on the conductive layer. The substrate includes a coated region where the active material layer is applied and an uncoated region where the active material layer is not applied. The resin substrate is made of a crystalline polymer. The crystallinity of the crystalline polymer located in the coated region is higher than that of the crystalline polymer located in the uncoated region.