BATTERY AND MANUFACTURING METHOD FOR BATTERY

To provide a battery in which the thickness of a band-shaped electrode in a wound electrode body can be homogenized easily and the deterioration in capacity can be suppressed easily.SOLUTION: A cylindrical battery 10 includes a wound electrode body in which a positive electrode 11 and a negative electrode are wound through a separator, and a positive electrode lead 20. The positive electrode 11 includes a band-shaped positive electrode current collector 36 including lead bonding parts 37a and 38a in which the positive electrode lead 20 is bonded. The positive electrode 11 includes a positive electrode mixture layer 45 including a one-side first part 41a provided continuously and integrally so as to extend in a longitudinal direction on at least one side in the thickness direction of the positive electrode current collector 36, and provided on the positive electrode lead 20 existing on the one side, and a one-side second part 41b provided on one side surface 37 in the thickness direction of the positive electrode current collector 36.SELECTED DRAWING: Figure 3b 【課題】巻回電極体における帯状の電極の厚さを均一にし易くて、容量劣化を抑制し易い電池等を提供すること。【解決手段】円筒形電池１０は、正極１１と負極がセパレータを介して巻回された巻回電極体と、正極リード２０とを備える。正極１１が、正極リード２０が接合されたリード接合部３７ａ,３８ａを含む帯状の正極集電体３６を有する。正極１１が、正極集電体３６の厚さ方向の少なくとも一方側に、長手方向に延在するように連続的かつ一体に設けられると共に、該一方側に位置する正極リード２０上に設けられる一方側第１部分４１ａと正極集電体３６の厚さ方向の一方側面３７上に設けられる一方側第２部分４１ｂとを含む正極合剤層４５を有する。【選択図】図３ｂ