20.500.12556/RUL-171572 Napredne elektrode na osnovi karboniziranih celuloznih vlaken in titanovega oksinitrida za elektrokemijsko pretvorbo energije Advanced Electrodes Based on Carbonized Cellulose Fibers and Titanium Oxynitride for Electrochemical Energy Conversion Elektroliza vode je ključna tehnologija za trajnostno proizvodnjo vodika, ki predstavlja obetaven obnovljiv energetski vektor in pomembno surovino za različne industrijske procese. Kljub visoki učinkovitosti PEM elektrolizatorjev njihova široka uporaba ostaja omejena zaradi potrebe po plemenitih kovinah, kot sta platina in iridij, ki delujeta kot ključna katalizatorja za reakcijo evolucije kisika (OER). V sodobnih PEM elektrolizatorjih anoda temelji na katalitski plasti iridijevih spojin, katerih visoka cena in omejena razpoložljivost predstavljata pomembno oviro za komercializacijo in širšo implementacijo tehnologije. V primerjavi s PEM elektrolizo omogoča alkalna elektroliza vode (AWE) uporabo elektrod iz neplemenitih kovin, kar izboljšuje ekonomsko dostopnost in dolgoročno trajnost tehnologije. V okviru te raziskave bomo razvili in optimizirali napredne elektrode, sestavljene iz karboniziranih celuloznih vlaken, modificiranih s titanovim oksinitridom (TiON). S toplotno obdelavo kompozitov celuloznih vlaken in TiO₂ v inertni atmosferi bomo sintetizirali elektrodne materiale, pri čemer bodo ogljikova vlakna, nastala iz celuloze, zagotavljala mehansko trdnost elektrod, medtem ko bo titanov oksinitrid izboljšal elektronsko prevodnost in elektrokemijsko stabilnost. Razvite elektrode bodo služile kot nosilna struktura za nanos katalitske plasti kovin, kot je nikelj (Ni), ki je znan po svoji aktivnosti pri reakciji evolucije kisika in vodika v alkalnem mediju. Cilj raziskave je sistematično preučiti vpliv vrste celuloznih vlaken in razmerja dodanega TiO₂ na mehansko stabilnost in elektronsko prevodnost elektrod. Preliminarni rezultati že nakazujejo ustrezno mehansko obstojnost in visoko elektronsko prevodnost teh elektrod, kar potrjuje njihov potencial za uporabo v naslednjih generacijah elektrolizatorjev. Water electrolysis is a key technology for sustainable hydrogen production, which represents a promising renewable energy vector and an essential raw material for various industrial processes. Despite the high efficiency of PEM electrolyzers, their widespread use remains limited due to the need for noble metals such as platinum and iridium, which serve as key catalysts for the oxygen evolution reaction (OER). In modern PEM electrolyzers, the anode is based on a catalytic layer of iridium compounds, whose high cost and limited availability pose a significant barrier to commercialization and broader implementation of the technology. Compared to PEM electrolysis, alkaline water electrolysis (AWE) allows the use of non-noble metal electrodes, improving economic accessibility and long-term sustainability. In this research, we will develop and optimize advanced electrodes composed of carbonized cellulose fibers modified with titanium oxynitride (TiON). By thermally treating cellulose fiber-TiO₂ composites in an inert atmosphere, we will synthesize electrode materials, where the carbon fibers derived from cellulose will provide mechanical strength to the electrodes, while titanium oxynitride will enhance electronic conductivity and electrochemical stability. The developed electrodes will serve as a support structure for the deposition of catalytic metal layers, such as nickel (Ni), which is known for its activity in the oxygen and hydrogen evolution reactions in an alkaline medium. The aim of this research is to systematically study the impact of cellulose fiber type and the TiO₂ content ratio on the mechanical stability and electronic conductivity of the electrodes. Preliminary results already indicate adequate mechanical durability and high electronic conductivity of these electrodes, confirming their potential for use in next-generation electrolyzers. Elektroliza vode titanonov oksinitrid karbonizirana celulozna vlakna elektrode za proizvodnjo vodika Water electrolysis Titanium Oxynitride carbonized cellulose fibres electrodes for hydrogen production true false false Slovenski jezik Angleški jezik Diplomsko delo/naloga 2025-08-28 09:35:01 2025-08-28 09:35:07 2025-09-07 04:05:34 0000-00-00 00:00:00 2025 0 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 25637 247646723 Jeraj_Katja_-_Napredne_elektrode_na_osnovi_karboniziranih_celuloznih_vlaken_in_titanovega_oksini.pdf Jeraj_Katja_-_Napredne_elektrode_na_osnovi_karboniziranih_celuloznih_vlaken_in_titanovega_oksini.pdf 1 9C98E881CBD02DDE1AA775C3820EA6D5 b4198fb82ccacc6adeb66d347343de363ab2e33b105d85d19cd5f61ca5ab31b1 649e450f-83e1-11f0-9328-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=214936 Fakulteta za kemijo in kemijsko tehnologijo 0 0 0