Considering the ever-increasing world demand for energy and the negative consequences of climate change, it is necessary to pay more attention to the development of renewable energy resources. Recently, a lot of emphasis has been placed on renewable ways of obtaining electricity, however, taking into account their volatility, there is a need for energy storage. One way is to use hydrogen as storage medium. Decoupled electrolysis has major benefits in comparison with traditional electrolysis methods which increases need for low-cost high-capacity electrode materials. Ultra-small titanium dioxide nanoparticles with mean particle size of 3.90 nm were produced using sol-gel method followed by dispersion in DMF with fixed concentration of 100 g/l. Nanoparticles were analyzed using XRD, TEM, Raman spectroscopy and XPS. Electrodes were produced by mixing TiO2 suspension with CB and PVDF with weight ration 60-30-10 and impregnating prepared suspension in carbon felt. Both pure TiO2 and TiO2 with surfactant layer were analyzed and compared to TiO2 standard- Aeroxide® P25. Electrochemical performance for TiO2 electrodes were analyzed using CVP, EIS and chronopotentiometry, with charging current 10 mA. Electrode capacity was calculated based on CVP results. Surfactant has a significant role in TiO2 capacity in acidic condition. Without surfactant TiO2 capacity increases by 50 % and is 166.68 F/g compared to 118.03 F/g. In alkaline condition, difference can’t be observed. In comparison with P25 pure TiO2 capacity is increased by 2.4 times in acidic conditions. Major factors for this difference are particle size (in case of P25 it’s around 25 nm, more than 6 times larger) and presence of rutile crystal phase (around 20%) which has lower gravimetric capacity. Produced electrodes showed high stability in chronopotentiometry. Cycle times haven’t signifyingly changed even after 1000 cycles. SEM images didn’t show significant to the electrodes before and after cycling.