2-D nanosheet Cu2O doped CuO coating poly m-phenylenediamine and melamine/graphene/carbonfibers com-posite (CuxO/MPM/GFs) wasfirstly fabricated by compound electrochemical method. CuxO/MPM/GFs was suc-cessfully used to the recovery of iodide (I?) from salt water by lower potential-aided sorption and desorption processes. The potential-aided recovery of I?at CuxO/MPM/GFs was characterized by FE-SEM, XRD, IR, Raman, XPS, UV–vis and electrochemical techniques in detail. The maximal adsorption capacity of 86.82 mg·g?1 could be obtained with a pseudo-second-order model at 0.8 V for 210 min in pH 5.0, 0.1 mol?L-1 NaCl, and the process accompanied the generation of CuI, CuO and I5?. The I?could be quickly desorbed from the electrode with a transfer of CuI to Cu2O by cycle voltammetry from?1.0 to 0.5 V for 90 cycles in pH 9.0, 0.1 mol?L-1 KNO3. Thus, CuxO/MPM/GFs was renewable in the continuous electrochemical-adsorption–desorption processes.