▎ 摘　　要

NOVELTY - The flexible electrode has a carbon cloth and a three-dimensional (3D) graphene layer which are laminated. The gold nanoparticles are distributed on a surface of the 3D graphene layer. The 3D graphene layer is provided with a thickness in specific range, and the gold nanoparticles have a particle size of 10 to 200 nm. The thickness of the graphene is significantly increased, the density also significantly larger, and the 3D structure was gradually formed with time. The 3D structure can ensure that the graphene layer and the carbon cloth layer are not stacked on each other but connected to each other, and greatly increased an electrochemical active area of a modified electrode. USE - Flexible electrode. ADVANTAGE - The flexible electrode as a working electrode of a flexible sensor can lower a detection limit of the flexible sensor, and show excellent sensitivity to small molecule substances at a low concentration. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing flexible electrode. DESCRIPTION OF DRAWING(S) - The drawing shows a flowchart illustrating the preparation of a flexible electrode.