NOVELTY - A battery electrical power collector (BB) has a layer (1) formed with electroconductive material containing electroconductive particles (1) and polymeric material (1) chosen from polymeric compound (a), phenoxy resin and epoxy resin (c), and amine and epoxy resin (d), layer (2) which is formed on layer (1), and comprises metal thin-film layer, or electroconductive material including polymeric material (2) and carbon-type electroconductive particles (2), and a layer (3) which is formed with electroconductive material including polymeric material (3) and electroconductive particles.    USE - Electrical power collector is used for battery e.g. bipolar battery (all claimed) including secondary battery including lithium-ion battery, power supply of vehicle, and mobile telephone.    ADVANTAGE - The electrical power collector has excellent stability with respect to equilibrium potential environment in a negative electrode, low electrical resistance, favorable solvent barrier property with respect to electrolyte solution, and barrier property with respect to component in an electrolyte. The lightweight battery comprising the collector has improved durability with high capacity retention ratio, and long-term reliability.    DETAILED DESCRIPTION - A battery electrical power collector has a layer (1) which is formed of an electroconductive material containing electroconductive particles (1), and a polymeric material (1) containing at least one substance chosen from polymeric compound (a) having alicyclic structure, phenoxy resin and epoxy resin (c), and amine and epoxy resin (d) having amine equivalent of 120 g/equivalent or less, a layer (2) which is formed on at least one surface of the layer (1), and comprises metal thin-film layer, or electroconductive material including polymeric material (2) and carbon-type electroconductive particles (2), and a layer (3) which is formed with electroconductive material including polymeric material (3) and electroconductive particles. The mixing ratio of the epoxy resin and the amine is 1 or more in number ratio of active hydrogen atoms in the amine with respect to the number of functional groups in the epoxy resin. An INDEPENDENT CLAIM is included for battery, which contains battery electrical power collector.    DESCRIPTION OF DRAWING(S) - The drawing shows a sectional view of the battery electrical power collector. (Drawing includes non-English language text)    Layers (AA)    Power collector (BB)