▎ 摘　　要

This work studies various methods of electrode surface modification by graphene oxide. A technique of application of reduced graphene oxide (RGO) onto the electrode in a thin-layer cell is developed. Preparation of RGO composite with the redox polymer, poly-o-phenylenediamine (PPD) is studied. Conducting RGO and RGO-PPD coatings with a developed surface are obtained; the RGO-PPD composite is an electroactive material.