| http://www.w3.org/ns/prov#value | - hen Black, or carbon fiber, and a binder such as polyvinylidene fluoride is bonded to the surface.The negative electrode current collector 32b is a punching metal or lath metal composed of nickel metal or conductive material coated with copper or nickel, and a mixture of conductive carbon material such as acetylene black, Ketchen Black, or carbon fiber, and a binder such as polyvinylidene fluoride
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