▎ 摘　　要

NOVELTY - Preparation of electrode involves adding to an electric conductive metallic and/or non-metallic material polymer matrix in liquid form, maintaining the mixture under stirring for 1-120 minutes, and putting the stirred mixture into a mold. The polymeric matrix is chosen from ethyl acrylate polymer, cellulose, epoxy resin, ethylene acrylic acid copolymer, fluoropolymer, natural rubber, hydrogenated nitrile rubber, polyethylene oxide, polyethylene glycol, poly(4-methyl-l-pentene), polybutylene, polyacetal, polyacetylene, polyacrylic acid, polyacrylonitrile, polyamide-6, polyaniline, polybenzimidazole, polybutadiene, polyisothianaphene, poly(methyl methacrylate), polyoxymethylene, poly(p-phenylene), poly-p-phenylene sulfide, poly(p-phenylene) vinylene, polypyrrole, polypropylene, polystyrene, PTFE, polythiophene, PVC, polyvinyl alcohol, polyvinylidene fluoride, ethylene propylene copolymer, urea-formaldehyde polymers, urethane polyester and/or urethane polyether. USE - Preparation of electrode e.g. working electrode, counter electrode or reference electrode used in electrochemical sensor (all claimed) and electrochemical probes used for detecting compounds present in water. ADVANTAGE - The method has reduced costs of the raw material. DETAILED DESCRIPTION - Preparation of polymeric matrix electrode involves adding to an electric conductive metallic and/or non-metallic material polymer matrix in liquid form, maintaining the mixture under stirring for 1-120 minutes, and putting the stirred mixture into a mold. The polymeric matrix is chosen from ethyl acrylate polymer, acrylonitrile-butadiene or styrene butadiene copolymer, cellulose, epoxy resin, ethylene acrylic acid copolymer, fluoropolymer, natural rubber, melamine formaldehyde or melamine resin, hydrogenated nitrile rubber, polyethylene oxide, polyethylene glycol, poly(4-methyl-l-pentene), polybutylene, polyacetal, polyacetylene, polyacrylic acid, polyacrylonitrile, polyamide-6, polyamide, polyaniline, polybenzimidazole, polybutadiene, polybutylene terephthalate, polycarbonate, polychloroprene, polydimethylsiloxane (silicones), polyepichlorohydrin, saturated and unsaturated polyester, polyetherketone, polyetherimide, polyethylene, low density polyethylene, chlorosulfonated polyethylene, high density polyethylene, poly(3,4-ethylenedioxythiophene), polyethylene terephthalate, polyphenylene sulfide, poly(phenylene oxide), polyphenylsulfone, polyisoprene, polyisothianaphene, phenolic/formaldehyde polymers, poly(methyl methacrylate), polyoxymethylene, poly(p-phenylene), poly-p-phenylene sulfide, poly(p-phenylene) vinylene, polypyrrole, polypropylene, polystyrene, PTFE, polythiophene, polyurethane or amino, PVC, polyvinyl alcohol, polyvinylidene fluoride, ethylene propylene copolymer, urea-formaldehyde polymers, urethane polyester and/or urethane polyether. The electric conductive metallic and/or non-metallic material is chosen from carbon, carbon nanotubes, carbon nanohorn, carbon black, graphene, fullerene, silver, copper, gold, aluminum, zinc, chrome, tin, iridium, tungsten, nickel, iron, platinum, lead, aluminum-tin oxide, indium-tin oxide. The electric conductive metallic and/or non-metallic material is added at a dose of 0.00-40%, optionally at dose of 1-30. The carbon is in the form of carbon fiber, carbon nano-fiber, carbon nanotubes, carbon black, carbon nano-clays or carbon nano-horn. The graphene is in the form of graphene, graphene oxide, graphene, nano platelets or fullerene. The metal is in the form of powder, dispersion, gel, particles, microparticles or nanoparticles and/or nanowire. The conductive ceramics are in the form of powder, dispersion, gel, particles, micro-particles or nanoparticles and/or nanowire. INDEPENDENT CLAIMS are included for the following: (i) electrode; (ii) electrochemical sensor; and (iii) polymer matrix e.g. Tecapeek ELS CF30 black (RTM: polyetheretherketone), Tecapeek ELS nano black (RTM: polyetheretherketone), Tecaform AH ELS black (RTM: semi-crystalline, electrically conductive polyoxymethylene copolymer), Tecaflon PVDF ELS black (RTM: polyvinylidene fluoride), Tecapeek SD black (RTM: electrically modified polyetheretherketone electrostatic dissipation plastic material), LARAMID K/40 HM (RTM: semi-aromatic polyamide based compound), LARPEEK 10 K/20 (RTM: polyetheretherketone-based compound), LARPEEK 10 K/30 (RTM: polyetheretherketone-based compound), LARPEEK 10 K/40 (RTM: polyetheretherketone-based compound), LARTON K/20 (RTM: hardly inflammable polyphenylene sulfide), LARTON K/30 (RTM: polyphenylene sulfide based compound), LARTON K/40 HM (RTM: polyphenylene sulfide based compound), LARTON L K/20 (RTM: linear polyphenylene sulfide based compound), LASTILAC RT K/10 (RTM: acrylonitrile-butadiene-styrene copolymer-based compound), LATAMID 66 H2 K/20 (RTM: polyamide 66-based compound), LATAMID 66 H2 K/30 (RTM: polyamide 66-based compound), LATAMID 66 H2 K/40 (RTM: polyamide 66-based compound), LATAMID 66 H2 K/50 (RTM: polyamide 66-based compound), LATER 4 K/30 (RTM: not-defined), LATICONTHER 52/11 GR/70 (RTM: high thermal conductivity product based on polypropylene homopolymer), LATICONTHER 62 GR/50 (RTM: high thermal conductivity product based on polyamide 6 and graphite), LATICONTHER 62 GR/50-V0 (RTM: high thermal conductivity product based on polyamide 6), LATICONTHER 62 GR/70 (RTM: high thermal conductivity product based on polyamide 6 and graphite), LATICONTHER 75 GR/50 (RTM: high thermal conductivity product based on polybutylene terephthalate and graphite), LATICONTHER 80 GR/50 (RTM: high thermal conductivity product based on polyphenylene sulfide and graphite), LATICONTHER 87/28 GR/50 (RTM: high thermal conductivity product based on polycarbonate and graphite), used in the preparation of electrode. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of the electrochemical probe. Counter electrode (1) Reference electrode (2) Working electrode (3) Electrical connection zone (4)