The hybrid material based on polyelectrolyte complexes of chitosan with oxycompounds of cobalt and nickel was electrodeposited on a stainless steel plate using the method of non-stationary electrolysis.The hybrid mate...The hybrid material based on polyelectrolyte complexes of chitosan with oxycompounds of cobalt and nickel was electrodeposited on a stainless steel plate using the method of non-stationary electrolysis.The hybrid material layer was investigated by scanning electron microscopy,atomic force microscopy,transmission elec-tron microscopy,X-ray diffraction,X-ray photoelectron spectroscopy,Brunauer-Emmett-Teller method,Fourier transform infrared spectroscopy,and Raman spectroscopy.The electrocatalytic properties of the hybrid material were studied in the hydrogen evolution reaction in alkaline electrolyte(1 mol·L−1 NaOH).It was determined that during the initial four-hour period of the hydrogen evolution process,the overpotential underwent a substan-tial decline,remaining constant for a minimum of 17 h thereafter,from 289 up to 210 mV at−10 mA·cm^(−2).After a long-term hydrogen evolution,the activity of the hybrid material electrode exceeded hydrogen evolution reaction activity by 20%Pt/C commercial catalyst at a high current density of−100 mA·cm−2.展开更多
基金supported by the Ministry of Science and Higher Education of the Russian Federation within the governmental assignment for Boreskov Institute of Catalysis(Project No.FWUR-2024-0036)(A.N.Kuznetsov)supported by the Ministry of Science and Higher Education of the Russian Federation(Project No.121031700314-5)(K.M.Popov).
文摘The hybrid material based on polyelectrolyte complexes of chitosan with oxycompounds of cobalt and nickel was electrodeposited on a stainless steel plate using the method of non-stationary electrolysis.The hybrid material layer was investigated by scanning electron microscopy,atomic force microscopy,transmission elec-tron microscopy,X-ray diffraction,X-ray photoelectron spectroscopy,Brunauer-Emmett-Teller method,Fourier transform infrared spectroscopy,and Raman spectroscopy.The electrocatalytic properties of the hybrid material were studied in the hydrogen evolution reaction in alkaline electrolyte(1 mol·L−1 NaOH).It was determined that during the initial four-hour period of the hydrogen evolution process,the overpotential underwent a substan-tial decline,remaining constant for a minimum of 17 h thereafter,from 289 up to 210 mV at−10 mA·cm^(−2).After a long-term hydrogen evolution,the activity of the hybrid material electrode exceeded hydrogen evolution reaction activity by 20%Pt/C commercial catalyst at a high current density of−100 mA·cm−2.
