Open AccessЭлектрохимический синтез композиционных покрытий Ni/TiO2 из низкотемпературного эвтектического растворителя и электрокаталитические свойства осадков
Author(s) -
В. С. Проценко,
AUTHOR_ID,
Т. Е. Бутырина,
Д. А. Богданов,
С. А. Корний,
Ф. И. Данилов,
AUTHOR_ID,
AUTHOR_ID,
AUTHOR_ID,
AUTHOR_ID
Publication year - 2021
Publication title -
èlektronnaâ obrabotka materialov
Language(s) - English
Resource type - Journals
eISSN - 2345-1718
pISSN - 0013-5739
DOI - 10.52577/eom.2021.57.6.01
Subject(s) - choline chloride , electrolyte , nickel , titanium dioxide , materials science , ethylene glycol , chloride , chemical engineering , composite number , inorganic chemistry , deep eutectic solvent , titanium , deposition (geology) , eutectic system , chemistry , metallurgy , microstructure , electrode , composite material , organic chemistry , paleontology , sediment , engineering , biology
Kinetics of electrodeposition of composite Ni/TiO2 coatings was studied using the electrolyte based on a deep eutectic solvent (DES) containing choline chloride, ethylene glycol, water additive, and nickel chloride. Degussa P 25 nanopowder was used as a dispersed phase in the electrolyte (1–10 g dm3). The developed electrolyte allows depositing composite coatings with the content of titanium dioxide reaching ~ 10 wt.%. The electrolytic deposition of the composite was shown to obey Guglielmi's kinetic model. The main parameters of co-deposition of TiO2 particles into a nickel matrix were determined in the framework of this kinetic model. The co-deposition of titanium dioxide was found to inhibit the reaction of the nickel ions discharge. Electrocatalytic properties of the prepared composite Ni/TiO2 coatings were evaluated with respect to the hydrogen evolution reaction in an aqueous alkaline solution. A noticeable improvement in the electrocatalytic activity was observed when titanium dioxide particles were introduced into an electrodeposited nickel matrix.