▎ 摘　　要

NOVELTY - Manufacturing (m1) a storage battery electrode (100) involves: forming a mixture comprising an active material, graphene oxide, and a binder; providing the mixture over a current collector (101); and reducing the graphene oxide to form a graphene over the current collector in a polar solvent comprising a reducer. The step of reducing the graphene oxide is performed at greater than or equal to room temperature to less than or equal to 150 degrees C. USE - For manufacturing a storage battery electrode which is used in a storage battery and an electronic device (claimed) including portable electronic devices such as mobile phones, smartphones, electronic books, and portable game machines. ADVANTAGE - The use of the present storage battery electrode enables fabrication of a storage battery having a higher capacity per unit volume of an electrode. Particularly, graphene oxide can be reduced at a reaction temperature sufficiently lower than that in the case of reducing graphene oxide by heat treatment. Also, a reducer which has weaker toxicity, e.g. ascorbic acid can be used instead of a highly toxic reducer (i.e. a reducer with high reducing ability) such as hydrazine. The use of such a reducer allows fabrication of a storage battery electrode through highly safe chemical reduction of graphene oxide. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) a storage battery comprising the storage battery electrode manufactured by the method (m1); and (2) an electronic device comprising the storage battery. DESCRIPTION OF DRAWING(S) - The figure shows a schematic view of storage battery electrode. Storage battery electrode (100) Current collector (101) Active material layer (102)