CURRENT COLLECTOR FOR NONAQUEOUS ELECTROLYTE BATTERY, ELECTRODE FOR NONAQUEOUS ELECTROLYTE BATTERY, AND NONAQUEOUS ELECTROLYTE BATTERY

摘要

PROBLEM TO BE SOLVED: To provide a current collector for a nonaqueous electrolyte battery, having a small amount of oxygen on a surface of an aluminum porous body and having an improved discharge capacity and charge-discharge efficiency of a battery.

SOLUTION: A current collector for a nonaqueous electrolyte battery comprises an aluminum porous body, and an amount of oxygen of the aluminum porous body is 3.1 mass% or less. Also, the aluminum porous body comprises an aluminum alloy containing at least one type of element selected from the group consisting of Cr, Mn, and a transition metal element. The aluminum porous body can be prepared by a production process which comprises: forming an aluminum alloy layer 2 on a surface of a resin 1 of a resin body 1f having a continuous hole; and subsequently heating the resin body (or a resin body 3 coated with the aluminum alloy layer) to a temperature less than or equal to a melting point of the aluminum alloy while immersing the resin body in a molten salt and while applying a potential lower than a standard electrode potential of aluminum to the aluminum alloy layer 2, thereby thermally decomposing the resin body 1f (or resin 1).

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