▎ 摘　　要

NOVELTY - The electrode has an electrode substrate, where the electrode substrate is fixedly provided with three electrodes which are coplanar with each other. The front surface of the substrate is provided with a first electrode from left to right sequentially a second electrode and a third electrode. The first electrode comprises a first pin (1), a first guide part (4) and a first detection layer (7). The second electrode comprises second pin (2) and second guide part. The third electrode comprises third pin (3), third guide part and second detection layer. The middle end of the second guide unit (5) is formed with a through hole (10). The back of the electrode substrates is set with a back electrode, specifically comprising a back pin, a back guide part, and an electrode modification ring. USE - Three-electrode coplanar standard electrode for a graphene. ADVANTAGE - The three-electrode graphene standard electrode has stable electrochemical performance and good anti-interference performance, and can be used for biochemical molecular detection. DESCRIPTION OF DRAWING(S) - The drawing shows a front view of a three-electrode coplanar standard electrode for a graphene. 1First pin 2Second pin 3Third pin 4First guide part 5Second guide part 6Third guide part 7First detection layer 8Second detection layer 9Electrode modification hole 10Conducting hole