COMPOSITE ELECTRODES FOR ELECTROCHEMICAL MEASUREMENTS

Electrode for electrochemical measurements, made of two layers, with one layer made of conductive polylactic acid (PLA) fibre or conductive polylactic acid (PLA) fibre doped with graphene, being a graphene-polymer layer, in which the weight ratio of graphene to PLA was 0.5% to 20% of graphene by weight and 99.5% to 80% of PLA by weight in the same layer of the electrode, and the layer is coated with nanodiamond foil (NDF) or a layer of nanodiamond powder (NDP). The layer of PLA or graphene/PLA is 0.1 to 5 mm thick and is coated with a layer 50 nm to 1500 nm thick being up to 0.1% of the entire electrode weight.