▎ 摘　　要

NOVELTY - The electrochemical electrode (100) includes a stack (200) that is delimited by two main faces (201). An outline (203) for connecting faces. The stack with an alternation of graphene sheets (300) and dielectric layers (400) and so that each graphene sheet is interposed between two dielectric layers between main faces. The edge (301) of the graphene sheets are partially exposed to the external environment at the level of a section of the contour, and the active section (204). The active section for forming an electrochemically sensitive area of the electrochemical electrode. The multiple electrodes are electrically contacting the graphene sheets, contact electrodes (500), and intended to collect an electrical signal resulting from an electrochemical reaction to occur at the level of the active section. USE - Electrochemical electrode. ADVANTAGE - The edges of the graphene sheets exposed at the level of the active section and electrochemical electrode are improved sensitivity with regard to the known electrodes. The edges of the sheets, which behave like microelectrodes, and promote convergent diffusion. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of the electrochemical electrode. Electrochemical electrode (100) Stack (200) Main faces (201) Outline (203) Active section (204) Graphene sheets (300) Edge (301) Dielectric layers (400) Contact electrodes (500)