Use of Ultra-Small TiO2 Anatase Nanoparticles in Energy Application
Abstracts of the 39th Scientific Conference 2023
Mairis Iesalnieks, Mārtiņš Vanags, Andris Šutka

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 via decoupled electrolysis. Ultra-small titanium dioxide nanoparticles were produced using sol-gel method and dispersed in DMF with 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 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. 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 and presence of rutile crystal phase which has lower gravimetric capacity. Cycle times haven’t signifyingly changed even after 1000 cycles.

Atslēgas vārdi
Decoupled electrolysis; H2 generation; TiO2

Iesalnieks, M., Vanags, M., Šutka, A. Use of Ultra-Small TiO2 Anatase Nanoparticles in Energy Application. No: Abstracts of the 39th Scientific Conference, Latvija, Riga, 28.-28. februāris, 2023. Online: 2023, 1.-1.lpp.

Publikācijas valoda
English (en)
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