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With the growing trend toward electrification of urban transportation, electric mopeds are emerging as a key area for implementing alternative energy storage solutions. Among these, sodium-ion cells represent a promising and cost-effective alternative to traditional lithium-based batteries. Environmental regulations, limited lithium resources, and increasing market prices are driving the search for efficient and sustainable energy sources, making sodium-ion technology an attractive candidate. These cells are gaining significant attention from researchers and technologists due to their potential for widespread adoption. Recent studies have focused on the use of metal sulphides as viable anode materials in Na-ion cells, as well as on carbon materials derived from biomaterials for use in electrochemical supercapacitors. Capacitive properties of these materials were evaluated using techniques such as galvanostatic charge-discharge (GCD) and cyclic voltammetry (CV). The cycling tests demonstrated high reversibility of reactions and strong specific capacitance, indicating good electrochemical performance. GCD analysis of sodium-based systems revealed high initial potentials and efficiency exceeding 90%, suggesting their suitability for long-term applications. Additionally, tests of supercapacitors indicated pseudocapacitive behavior, further confirming the effectiveness of the studied materials. Overall, the results emphasize the strong potential of sodium-ion technologies for energy storage, particularly in applications requiring durability, such as electric mopeds.