MeS RK project 2022-2024
“Development of an innovative aqueous electrolyte for high-energy metal-ion batteries” (IRN AR14871970)
Phone: +7 707 244 2236
Е-mail: frodo-007@mail.ru
En
Kz
Expected scientific and practical results:
Physicochemical analysis of electrolyte solutions containing chaotropic components and optimization of its composition will ensure maximum hydrophobic effect on the electrode surface. Electrolyte components will be selected that provide the maximum reduction in water activity on the electrode surface. A model of electrolyte balance will be proposed. Articles will be prepared for publication in a journal peer-reviewed in the Scopus and WoS databases and an article will be prepared for a journal recommended by COXON MES RK
Results:
  1. It has been established that the dependence of the specific electrical conductivity of the solution on the concentration of NaClO4 and LiCl is represented by a second-order equation.
  2. The same value of water activity is observed for NaClO4 and LiCl salts in dilute solutions.
  3. The influence of the concentration of NaClO4 and LiCl in electrolytes on the window of electrochemical stability was revealed. The electrochemical stability window of 10 M NaClO4 is 3.2 V, which is due to the binding of water during hydration.
  4. For electrolytes LiCl and NaClO4 containing 5% of various donor additives (1-methyl-2-pyrrolidone, DMF, acetone, acetic acid, DMSO, acetonitrile, nitromethane, benzonitrile, THF), a linear dependence of the water activity value on the donor number of the additive was established .
  5. It is shown that the dependence of the specific electrical conductivity of the solution on the salt concentration is represented by a second-order equation.
  6. From cyclic voltammetry data for a system consisting of two electrodes based on carbon fabric and the electrolyte under study, the capacity of the double layer at different concentrations was determined. It has been established that the capacity of the double layer increases with increasing concentration, which is associated with a decrease in the Debye length.
Contacts
Visiting hours 9.00-18.00, Mon-Fri
• Mal'chik Fedor Igorevich is a leading “researcher”, head of the laboratory “Electrochemical Production Technologies”.

• Phone: +7 707 244 2236
• Е-mail: frodo-007@mail.ru
•Address: Almaty city, Al-Farabi Avenue 71/23
Ru / En / Kz