Lithium-ion batteries are the main type of home appliance batteries fromsmartphones up to
Batteries of this type are actively used in many areas of life, but their capacity is stillIt is limited by the properties of graphite, the main anode material.
Scientists from NUST MISIS managed to obtain a new material for anodes that can provide a significant increase in capacity and extend battery life.
Our obtained porous nanostructuredmicrospheres of the composition Cu0.4Zn0.6Fe2O4 as anode material provide a capacity three times higher than that of existing batteries on the market, while allowing an increase in the number of charge-discharge cycles by 5 times compared to other promising alternatives to graphite. This improvement is achieved through a synergistic effect by combining a special nanostructure and composition of the elements used.
Evgeny Kolesnikov, Assistant Professor, Department of Functional Nanosystems and High-Temperature Materials, NUST MISIS
The synthesis process takes place in one step usingspray pyrolysis method: an aqueous solution with ions of certain metals is converted into a fog using ultrasound, and then the water is evaporated at temperatures up to 1200 ° C with the decomposition of the original metal salts. As a result, spheres of micron or submicron sizes are obtained with the porosity required for operation in a lithium-ion system.
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