MEs rk project
“Development of energy-intensive anode materials based on conducting metal-organic compounds (MOF) for metal-ion batteries” (IRN AR14871991)
Expected scientific and practical results:
Using electrochemical research, the optimal method for manufacturing electrodes will be selected; The kinetics of the process of intercalation/deintercalation of cations into the MOS structure will be studied. Using existing models, the contributions of charge accumulation due to the Faraday reaction and due to the adsorption of ions in the electric double layer will be assessed. An article 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:
•To obtain the desired structure of MOF-74 Mn2(DSBDC), the solvothermal method, thermal method, and coprecipitation method were used. It turned out that the coprecipitation method that led to the synthesis of Mn2(DSBDC) requires a very careful approach to the selection of precursors (metal salts) and their water content. In turn, the thermal synthesis method turned out to be completely unsuitable for the formation of the Mn2(DSBDC) phase. The synthesis was also carried out using a hydrothermal reactor. By varying the synthesis temperature, it was found that the Mn2(DSBDC) phase is formed at a temperature of 120 oC.

•In order to identify the structure, X-ray phase analysis was carried out. The diffraction pattern shows characteristic peaks that fully correspond to the Mn2(DSBDC) phase. Thermogravimetric analysis showed the thermal stability of the sample up to 228 oC.

•After carrying out physicochemical research methods with synthesized samples (MgMOF-74, ZnMOF-74, CuMOF-74), anode electrode materials were manufactured. The best electrochemical characteristics were shown by the electrode material ZnMOF-74, manufactured in a ratio of 65/25 (working material/conductive additive); its practical capacity at cycle 5 was 180 mAh g-1. According to the charge/discharge curves, in this case two mechanisms of charge accumulation are realized, both capacitive and intercalation.
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
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