English
Русский 64-77 p.
This paper investigates the process of electrochemical production of manganese dioxide from a 10% sulfuric acid electrolyte leaching the active mass of spent manganese-zinc chemical power sources. The relevance of the topic is due to the wide application of MnO2 in modern industry and the need to develop efficient methods for obtaining it from secondary raw materials. The aim of the study was to examine the influence of electrolyte temperature and ultrasonic treatment on the properties and sizes of the obtained manganese dioxide particles. The experimental methodology included electrolysis in a three-electrode cell with temperature variation from 30°C to 90°C and current density of 3-5 A/dm2. Ultrasonic treatment of the electrolyte was carried out at a frequency of 20 kHz. The obtained MnO2 samples were studied using scanning electron microscopy and X-ray energy-dispersive analysis. The results showed that increasing the electrolyte temperature leads to an increase in the size of manganese dioxide particles from 0.2 to 5-10 microns. The introduction of ultrasound allows obtaining highly dispersed MnO2 with crystallite sizes of less than 50 nm. The maximum current yield (92%) is achieved at 60°C and a current density of 5 A/dm2. The practical significance of the work is associated with the possibility of obtaining nanostructured manganese dioxide with improved electrochemical characteristics from spent raw materials. Further research will be aimed at optimizing the parameters of electrolysis and ultrasonic treatment to control the morphology and properties of MnO2.
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3. Chang H. Nanoparticle suspension preparation using the arc spray nanoparticle synthesis system combined with ultrasonic vibration and rotation electrode. Int. J. Adv. Manuf. Technol. 2005. No. 26. P. 552.
4. Derlugyan P.D., Danyushina G.A., Lipkin M.S. Production of nanosized electrolytic copper powders in elec-trolytes with water-soluble polymers. Engineering Bulletin of the Don. 2015. Vol. 37. No. 3. P. 183 – 200.
5. Kasach A.A., Kurilo I.I., Kharitonov D.S., Radchenko S.L. et al. Sonochemical electrodeposition of copper coatings. Russ. J. Appl. Chem+. 2018. Vol. 91 (2). P. 207.
6. Cai, Fanghui et al. Sulfur-Functionalized CoMn2O4 as a Fenton-like Catalyst for the Efficient Rhoda-mine B Degradation. Applied Surface Science. 2023. No. 623. P. 157044.
7. Contigiani C.C., Fornés J.P., González Pérez O., Bisang J.M. Evaluation of a Decaying Swirling Flow Elec-trochemical Reactor for the Manufacture of Colloidal Sulfur by Reduction of Sulfur Dioxide. Chemical Engineer-ing and Processing – Process Intensification. 2020. No. 157. P. 108111.
8. Han Fei, Mingjie Wang Wei Liu, and Weijie Song Recovery of Sulfuric Acid and Iron from Titanium Diox-ide Waste Acid by Membrane Electrolysis Combined with Selective Electrodialysis. Separation and Purification Technology. 2024. No. 344. P. 127199.
9. Jan Waleed, Adnan Daud Khan, Faiza Jan Iftikhar, Ghulam Ali. Recent Advancements and Challenges in Deploying Lithium Sulfur Batteries as Economical Energy Storage Devices. Journal of Energy Storage. 2023. No. 72. P. 108559.
10. Long, Tengfa et al. Recovery of Manganese and Lead from Electrolytic Manganese Anode Slime Based on a Roasting and Acid Leaching Reduction System. Separation and Purification Technology. 2025. No. 352. P. 128093.
11. Mends, Emmanuel Atta et al. Leaching Nickel Sulfide Tailings with Activated Carbon in Sulfuric Ac-id Medium. Separation and Purification Technology. 2025. No. 353. P. 128520.
12. Nakazawa Hiroshi, Shin Koshiya, Hideki Kobayashi, Takashi Matsuhashi. The Effect of Carbon Black on the Oxidative Leaching of Enargite by Manganese(IV) Dioxide in Sulfuric Acid Media. Hydrometallurgy. 2017. No. 171. P. 165 – 171.
13. Raulo Avinash, Golareh Jalilvand Advances in Fibrous Materials for High-Capacity Lithium Sulfur Batter-ies. Nano Energy 2024. No. 122. P. 109265.
14. Sergienko Natalia, Elizabeth Cuervo Lumbaque, and Jelena Radjenovic (Electro)Catalytic Oxidation of Sul-fide and Recovery of Elemental Sulfur from Sulfide-Laden Streams. Water Research. 2023. No. 245. P. 120651.
15. Sun, Dong et al. Sulfur Resource Recovery Based on Electrolytic Manganese Residue Calcination and Man-ganese Oxide Ore Desulfurization for the Clean Production of Electrolytic Manganese. Chinese Journal of Chemi-cal Engineering. 2020. No. 28 (3). P. 864 – 870.
16. Sunkari Dinesh, Kalim Deshmukh, Subhasree Panda, Khadheer Pasha S.K. Recent Progress in MXene-Based Materials for Lithium-Ion and Lithium-Sulfur Batteries: A Comprehensive Review. Journal of Energy Stor-age. 2024. No. 92. P. 112017.
17. Tiwari Sakshi, Venkteshwar Yadav A.K Poonia, Dharm Pal. Exploring Advances in Sulfur Composite Cathodes for Lithium-Sulfur Batteries: A Comprehensive Review. Journal of Energy Storage. 2024. No. 94. P. 112347.
18. Vineeth S.K et al. Progress in the Development of Solid-State Electrolytes for Reversible Room-Temperature Sodium – Sulfur Batteries. Materials Advances. 2022. No. 3 (16). P. 6415 – 6440.
19. Wang, Jiani et al. Recent Advances in Inhibiting Shuttle Effect of Polysulfide in Lithium-Sulfur Bat-teries. Journal of Energy Storage 2023. No. 72. P. 108372.
20. Wang Xin et al. Novel Functional Separator with Self-Assembled MnO2 Layer via a Simple and Fast Meth-od in Lithium-Sulfur Battery. Journal of Colloid and Interface Science. 2022. No. 606. P. 666 – 676.
Khamkova G.G., Chernik A.A. Electrochemical production of manganese dioxide from sulfuric acid electrolyte. Chemical Bulletin. 2024. 7 (3). P. 64 – 77. https://doi.org/10.58224/2619-0575-2024-7-3-64-77