Registration Number
0223U002655,
0120U101171
, R & D reports
Title
Electrochemical synthesis and properties of nanostructured thin films of binary and ternary alloys of refractory metals
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Head
Kublanovskii Valery S., Доктор хімічних наук
Registration Date
01-03-2023
Organization
V.I. Vernadskii Institute of General & Inorganic Chemistry NAS of Ukraine
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Multicomponent complex electrolytes have been developed and improved, an important feature of which is the possibility of formation of polymetallic and/or polyligand complexes in the volume of the solution, which can significantly affect the deposition kinetics and physicochemical properties of alloys.
The electrochemical, corrosion, and electrocatalytic characteristics of induced coprecipitated alloys in hydrogen reduction reactions in alkaline and acidic electrolytes were investigated.
Studies have shown that with the help of an external magnetic field, changing its direction and using co-precipitation with various refractory metals, it is possible to carry out a controlled change in the crystal structure and magnetic properties of binary cobalt alloys in a fairly wide range from soft magnetic to hard magnetic.
A fundamentally new acetate-ammonia electrolyte based on highly concentrated acetate salts has been developed for the electrochemical formation of molybdenum Ni, Co, Fe alloys with the maximum content of the refractory element molybdenum in the alloy, such coatings exhibit the highest catalytic activity in the hydrogen reduction reaction. For the first time, Ni-Mo alloys were obtained with a molybdenum content of about 85 at.%, compared to alloys obtained by the metallurgical method.
The electrochemical synthesis of binary CoRe alloys and ternary CoWRe alloys from monoligand citrate and multi-ligand citrate-pyrophosphate electrolytes has been developed. The best corrosion resistance of coatings containing a total of 25-35 at.% refractory elements. The more rhenium in the alloy, the higher its hardness.
A methodological basis for the development of compositions of stable non-toxic electrolytes for the deposition of thin films of Sn-Co alloys, capable of providing high charge-discharge current densities without mechanical destruction, is proposed, which will allow their use as effective anode materials for LIA.
Product Description
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Babenkov Eugen A.
Bersirova Oksana L.
Bondar Olena O
Devyatkin Sergei V.
Kochetova Svitlana A.
Kublanovskyi Valerii S.
Mal'tseva Tetyana V.
Nikitenko Vasyl M.
Nechiporchuk Sergiy V.
Pisanenko Oleksandr D.
Yapontseva Juliya S.
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2023-03-01
