ELECTRODE PRODUCTION METHOD

In a case where an electrode manufacturing operation such as heat treatment is performed on a rectangular plate-like electrode substrate that is suspended by a suspension jig, there is provided is a method for manufacturing an electrode capable of suppressing a waste of electrode substrate, preventing impairment of operability, improving flatness and the like of the electrode substrate by a simple method, and reliably preventing the electrode substrate from falling off, and simultaneously, capable of solving a problem of wrinkles and bulges that occur on the electrode due to the heat treatment and the like, thereby manufacturing a higher-quality electrode. The method for manufacturing an electrode includes: preparing a rectangular plate-like electrode substrate A formed with attachment portions A at two ends including opposing sides by linearly bending two parts so that each part has an overall even side; holding the attachment portions A by the suspension jig B and a lower jig each being provided with a movement restriction portion with which a leading end of each attachment portion A comes into contact, thereby maintaining the electrode substrate A in a suspended state; and performing at least heat treatment on the suspended electrode substrate A so as to manufacture a portion that is to be an electrode.