An electrochemical reaction apparatus includes: a cathode that includes a first catalyst that reduces carbon dioxide to carbon monoxide; an anode; an electrolytic solution that contains a reactant and an electrolyte; and a second catalyst that synthesizes an oxygen-containing organic material from the carbon monoxide and the reactant, in which the electrolytic solution has a convection flow, and the direction of the convection flow is formed so that the electrolytic solution comes into contact with the first catalyst and the second catalyst in this order.

The present description discloses an electrochemical reactor for the production of graphene oxide, as well as a method for the preparation of graphene oxide using the electrochemical reactor. The graphene oxide herein obtained exhibits a homogeneous degree of oxidation.

The present description discloses an electrochemical reactor for the production of graphene oxide, as well as a method for the preparation of graphene oxide using the electrochemical reactor. The graphene oxide herein obtained exhibits a homogeneous degree of oxidation.

Provided is a system for continuous generation of gases, the system including an electrochemical device and an active-material regeneration device.

Provided is a system for continuous generation of gases, the system including an electrochemical device and an active-material regeneration device.