Activity and stability of RuO2-coated titanium anodes prepared via the alkoxide route
Aktivnost i stabilnost titanskih anoda sa prevlakom od oksida rutenijuma dobijenom alkoksidnim postupkom
2006
Преузимање 🢃
Аутори
Panić, VladimirDekanski, Aleksandar
Milonjić, Slobodan K.
Mišković-Stanković, Vesna
Nikolić, Branislav
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
Titanium anodes with an active RuO2 coating of two different thicknesses were prepared from the oxide suspended in ethanol ("ink" method), while the oxide itself was synthesized by the hydrolysis of ruthenium ethoxide in an ethanolic solution (alkoxide route). The morphology of prepared oxide was examined by scanning electron microscopy. The electrochemical properties of the prepared Ti/RuO2 anodes, involving their cyclic voltammetric behavior in H2SO4 and NaCl solutions, activity in the chlorine and oxygen evolution reaction, impedance behavior in H2SO4, and stability during electrolysis in dilute chloride solutions, were investigated. The performances of the anodes are compared to those of a Ti/RuO2 anode prepared by the sol-gel procedure from an oxide sol obtained by the forced hydrolysis of ruthenium chloride in acid solution. The anodes prepared via the alkoxide route showed a higher capacitance and activity for the chlorine evolution reaction than the anode prepared by the inorga...nic sol-gel procedure. The results of the stability test showed that the utilization of the coating active material is better when the anodes were prepared via the alkoxide route than via the inorganic sol-gel procedure, particularly for anodes with a smaller mass of coating. The different rates of loss of activity indicate a degradation mechanism for the anodes prepared via the alkoxide route in which electrochemical dissolution of RuO2 from the coating surface prevails over the growth of an insulating TiO2 layer in the coating/Ti substrate interphase. The effect of RuO2 dissolution from the coating surface increases with increasing coating mass.
Titanske anode sa aktivnom prevlakom od oksida rutenijuma dve različite debljine, formirane su od oksida dobijenog hidrolizom rutenijum(III)-etoksida u etanolskom rastvoru ("ink" metoda). Morfologija dobijenog oksida ispitivana je skenirajućom elektronskom mikroskopijom. Ispitivana su elektrohemijska svojstva formiranih anoda, koja podrazumevaju ciklično-voltametrijsko ponašanje u rastvorima H 2SO4 i NaCl, aktivnost u reakcijama izdvajanja hlora i kiseonika, impedansno pona- šanje i stabilnost tokom elektrolize razblaženih rastvora hlorida. Karakteristike dobijenih anoda upoređene su sa karakteristikama anode formirane sol-gel postupkom iz oksidnog sola dobijenog forsiranom hidrolizom rutenijum(III)-hlorida u kiseloj sredini (5 mol dm-3HCl). Anode formirane alkoksidnim postupkom imaju veću kapacitivnost i aktivnost za reakciju izdvajanja hlora od anode dobijene sol-gel postupkom iz neorganskog sola. Rezultati testa stabilnosti u rastvoru hlorida pokazuju da je iskorišćenje aktivnog mat...erijala prevlake takođe bolje kod anoda dobijenih alkoksidnim postupkom, naročito za anodu sa manjom debljinom prevlake. Rezultati ukazuju na to da u mehanizmu gubitka aktivnosti anoda dobijenih alkoksidnim postupkom elektrohemijsko rastvaranje oksida rutenijuma sa površine prevlake preovlađuje u odnosu na rast izolatorskog sloja oksida titana u međufazi prevlaka/ titanska podloga. Efekt rastvaranja RuO2 sa površine je izraženiji kod prevlake veće debljine.
Кључне речи:
RuO2 coating / alkoxide / ink method / ruthenium ethoxide / chlorine evolution / anode stabilityИзвор:
Journal of the Serbian Chemical Society, 2006, 71, 11, 1173-1186Издавач:
- Serbian Chemical Society
Финансирање / пројекти:
- Електрохемијске карактеристике оксидних и полимерних превлака на модификованим површинама метала (RS-MESTD-MPN2006-2010-142061)
DOI: 10.2298/JSC0611173P
ISSN: 0352-5139
WoS: 000243619400006
Scopus: 2-s2.0-33846326826
Институција/група
IHTMTY - JOUR AU - Panić, Vladimir AU - Dekanski, Aleksandar AU - Milonjić, Slobodan K. AU - Mišković-Stanković, Vesna AU - Nikolić, Branislav PY - 2006 UR - https://cer.ihtm.bg.ac.rs/handle/123456789/275 AB - Titanium anodes with an active RuO2 coating of two different thicknesses were prepared from the oxide suspended in ethanol ("ink" method), while the oxide itself was synthesized by the hydrolysis of ruthenium ethoxide in an ethanolic solution (alkoxide route). The morphology of prepared oxide was examined by scanning electron microscopy. The electrochemical properties of the prepared Ti/RuO2 anodes, involving their cyclic voltammetric behavior in H2SO4 and NaCl solutions, activity in the chlorine and oxygen evolution reaction, impedance behavior in H2SO4, and stability during electrolysis in dilute chloride solutions, were investigated. The performances of the anodes are compared to those of a Ti/RuO2 anode prepared by the sol-gel procedure from an oxide sol obtained by the forced hydrolysis of ruthenium chloride in acid solution. The anodes prepared via the alkoxide route showed a higher capacitance and activity for the chlorine evolution reaction than the anode prepared by the inorganic sol-gel procedure. The results of the stability test showed that the utilization of the coating active material is better when the anodes were prepared via the alkoxide route than via the inorganic sol-gel procedure, particularly for anodes with a smaller mass of coating. The different rates of loss of activity indicate a degradation mechanism for the anodes prepared via the alkoxide route in which electrochemical dissolution of RuO2 from the coating surface prevails over the growth of an insulating TiO2 layer in the coating/Ti substrate interphase. The effect of RuO2 dissolution from the coating surface increases with increasing coating mass. AB - Titanske anode sa aktivnom prevlakom od oksida rutenijuma dve različite debljine, formirane su od oksida dobijenog hidrolizom rutenijum(III)-etoksida u etanolskom rastvoru ("ink" metoda). Morfologija dobijenog oksida ispitivana je skenirajućom elektronskom mikroskopijom. Ispitivana su elektrohemijska svojstva formiranih anoda, koja podrazumevaju ciklično-voltametrijsko ponašanje u rastvorima H 2SO4 i NaCl, aktivnost u reakcijama izdvajanja hlora i kiseonika, impedansno pona- šanje i stabilnost tokom elektrolize razblaženih rastvora hlorida. Karakteristike dobijenih anoda upoređene su sa karakteristikama anode formirane sol-gel postupkom iz oksidnog sola dobijenog forsiranom hidrolizom rutenijum(III)-hlorida u kiseloj sredini (5 mol dm-3HCl). Anode formirane alkoksidnim postupkom imaju veću kapacitivnost i aktivnost za reakciju izdvajanja hlora od anode dobijene sol-gel postupkom iz neorganskog sola. Rezultati testa stabilnosti u rastvoru hlorida pokazuju da je iskorišćenje aktivnog materijala prevlake takođe bolje kod anoda dobijenih alkoksidnim postupkom, naročito za anodu sa manjom debljinom prevlake. Rezultati ukazuju na to da u mehanizmu gubitka aktivnosti anoda dobijenih alkoksidnim postupkom elektrohemijsko rastvaranje oksida rutenijuma sa površine prevlake preovlađuje u odnosu na rast izolatorskog sloja oksida titana u međufazi prevlaka/ titanska podloga. Efekt rastvaranja RuO2 sa površine je izraženiji kod prevlake veće debljine. PB - Serbian Chemical Society T2 - Journal of the Serbian Chemical Society T1 - Activity and stability of RuO2-coated titanium anodes prepared via the alkoxide route T1 - Aktivnost i stabilnost titanskih anoda sa prevlakom od oksida rutenijuma dobijenom alkoksidnim postupkom VL - 71 IS - 11 SP - 1173 EP - 1186 DO - 10.2298/JSC0611173P ER -
@article{ author = "Panić, Vladimir and Dekanski, Aleksandar and Milonjić, Slobodan K. and Mišković-Stanković, Vesna and Nikolić, Branislav", year = "2006", abstract = "Titanium anodes with an active RuO2 coating of two different thicknesses were prepared from the oxide suspended in ethanol ("ink" method), while the oxide itself was synthesized by the hydrolysis of ruthenium ethoxide in an ethanolic solution (alkoxide route). The morphology of prepared oxide was examined by scanning electron microscopy. The electrochemical properties of the prepared Ti/RuO2 anodes, involving their cyclic voltammetric behavior in H2SO4 and NaCl solutions, activity in the chlorine and oxygen evolution reaction, impedance behavior in H2SO4, and stability during electrolysis in dilute chloride solutions, were investigated. The performances of the anodes are compared to those of a Ti/RuO2 anode prepared by the sol-gel procedure from an oxide sol obtained by the forced hydrolysis of ruthenium chloride in acid solution. The anodes prepared via the alkoxide route showed a higher capacitance and activity for the chlorine evolution reaction than the anode prepared by the inorganic sol-gel procedure. The results of the stability test showed that the utilization of the coating active material is better when the anodes were prepared via the alkoxide route than via the inorganic sol-gel procedure, particularly for anodes with a smaller mass of coating. The different rates of loss of activity indicate a degradation mechanism for the anodes prepared via the alkoxide route in which electrochemical dissolution of RuO2 from the coating surface prevails over the growth of an insulating TiO2 layer in the coating/Ti substrate interphase. The effect of RuO2 dissolution from the coating surface increases with increasing coating mass., Titanske anode sa aktivnom prevlakom od oksida rutenijuma dve različite debljine, formirane su od oksida dobijenog hidrolizom rutenijum(III)-etoksida u etanolskom rastvoru ("ink" metoda). Morfologija dobijenog oksida ispitivana je skenirajućom elektronskom mikroskopijom. Ispitivana su elektrohemijska svojstva formiranih anoda, koja podrazumevaju ciklično-voltametrijsko ponašanje u rastvorima H 2SO4 i NaCl, aktivnost u reakcijama izdvajanja hlora i kiseonika, impedansno pona- šanje i stabilnost tokom elektrolize razblaženih rastvora hlorida. Karakteristike dobijenih anoda upoređene su sa karakteristikama anode formirane sol-gel postupkom iz oksidnog sola dobijenog forsiranom hidrolizom rutenijum(III)-hlorida u kiseloj sredini (5 mol dm-3HCl). Anode formirane alkoksidnim postupkom imaju veću kapacitivnost i aktivnost za reakciju izdvajanja hlora od anode dobijene sol-gel postupkom iz neorganskog sola. Rezultati testa stabilnosti u rastvoru hlorida pokazuju da je iskorišćenje aktivnog materijala prevlake takođe bolje kod anoda dobijenih alkoksidnim postupkom, naročito za anodu sa manjom debljinom prevlake. Rezultati ukazuju na to da u mehanizmu gubitka aktivnosti anoda dobijenih alkoksidnim postupkom elektrohemijsko rastvaranje oksida rutenijuma sa površine prevlake preovlađuje u odnosu na rast izolatorskog sloja oksida titana u međufazi prevlaka/ titanska podloga. Efekt rastvaranja RuO2 sa površine je izraženiji kod prevlake veće debljine.", publisher = "Serbian Chemical Society", journal = "Journal of the Serbian Chemical Society", title = "Activity and stability of RuO2-coated titanium anodes prepared via the alkoxide route, Aktivnost i stabilnost titanskih anoda sa prevlakom od oksida rutenijuma dobijenom alkoksidnim postupkom", volume = "71", number = "11", pages = "1173-1186", doi = "10.2298/JSC0611173P" }
Panić, V., Dekanski, A., Milonjić, S. K., Mišković-Stanković, V.,& Nikolić, B.. (2006). Activity and stability of RuO2-coated titanium anodes prepared via the alkoxide route. in Journal of the Serbian Chemical Society Serbian Chemical Society., 71(11), 1173-1186. https://doi.org/10.2298/JSC0611173P
Panić V, Dekanski A, Milonjić SK, Mišković-Stanković V, Nikolić B. Activity and stability of RuO2-coated titanium anodes prepared via the alkoxide route. in Journal of the Serbian Chemical Society. 2006;71(11):1173-1186. doi:10.2298/JSC0611173P .
Panić, Vladimir, Dekanski, Aleksandar, Milonjić, Slobodan K., Mišković-Stanković, Vesna, Nikolić, Branislav, "Activity and stability of RuO2-coated titanium anodes prepared via the alkoxide route" in Journal of the Serbian Chemical Society, 71, no. 11 (2006):1173-1186, https://doi.org/10.2298/JSC0611173P . .