Sanyo Electric Co., Ltd.

Kazuya Nishio

Masao Fukunaga

Haruya Nakai

Tetsuya Sato

Ryosuke Shirota

Mituhiro Yosinaga

A secondary-battery electrode manufacturing method that allows a secondary-battery electrode including a neat linear cut portion to be stably manufactured at a high speed is provided. A method of manufacturing a secondary-battery electrode (), which is an example of an embodiment, comprises a first step of forming an active material layer () on at least one surface of a long core body (). The method of manufacturing the secondary-battery electrode (), which is an example of the embodiment also comprises a second step of cutting an electrode precursor () into a predetermined shape by using a continuous wave laser, the electrode precursor () being the long core body () having the active material layer () formed thereon.

Secondary-battery electrode and secondary-battery electrode manufacturing method, and secondary battery and method of manufacturing secondary battery

An object is to provide a secondary-battery electrode that is capable of suppressing a short circuit between adjacent positive and negative electrodes when the secondary-battery electrode is applied to an electrode body of a secondary battery. A secondary-battery electrode () includes a thin-plate-shaped metal core body () and an active material layer () containing an active material and formed on two surfaces of the core body (). In a cut end portion () of the electrode, an end portion () of the core body () is positioned inward of an end portion () of the active material layer () in a surface direction Y of the electrode.

Disclosed is a method for manufacturing a positive electrode including a positive electrode substrate made of aluminum foil and a positive electrode active material layer containing a positive electrode active material on the positive electrode substrate. This method includes the steps of forming the positive electrode active material layer on the positive electrode substrate; forming a protective layer on the positive electrode substrate; stretching an exposed region of the positive electrode substrate after the steps of forming the active material layer and the protective layer; and compressing the positive electrode active material layer after the stretching step.

Method for manufacturing electrode and method for manufacturing secondary battery

Disclosed is a method for manufacturing a positive electrode including a positive electrode substrate made of aluminum foil and a positive electrode active material layer containing a positive electrode active material on the positive electrode substrate. This method includes the steps of stretching a first exposed region of the positive electrode substrate with a first stretching roller disposed upstream; stretching a second exposed region of the positive electrode substrate with a second stretching roller disposed downstream; and compressing the positive electrode active material layer with a pair of compression rollers.

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Hyogo, Japan

Kazuya Nishio