Selectivity of Mn rich Ru Mn O phases in parallel oxygen and chlorine evolution

0585923 - ÚFCH JH 2025 RIV GB eng J - Článek v odborném periodiku
Astudillo, Catalina - Minhová Macounová, Kateřina - Nebel, Roman - Plšek, Jan - Krtil, Petr
Selectivity of Mn rich Ru Mn O phases in parallel oxygen and chlorine evolution.
Electrochimica acta. Roč. 492, JUL 2024 (2024), č. článku 144346. ISSN 0013-4686. E-ISSN 1873-3859
Grant CEP: GA ČR(CZ) GA21-03037S; GA MŠMT(CZ) LM2023066
Institucionální podpora: RVO:61388955
Klíčová slova: oxygen evolution reactions * selectivity * electrocatalysis
Obor OECD: Physical chemistry
Impakt faktor: 6.6, rok: 2022
Způsob publikování: Omezený přístup
https://www.sciencedirect.com/science/article/pii/S0013468624005887

Single phase Mn rich RuxMn1-x O2 conforming to a highly disordered γ MnO2 with pyrolusite-like blocks dominating in the structure were prepared in the low Ru content range (0.15 ≥ x ≥ 0.30). All synthesized materials were electrochemically active in oxygen and chlorine evolution in acidic media with variable chloride content. The total anodic activity increased with increasing Ru content in the structure as well as with increasing concentration of chlorides in the solution. The selectivity towards oxygen evolution reaction was predominant for all chloride concentrations (from 0.02 to 0.3 M), and its value was not dependent on the total Ru content in the material structure. The reaction mechanism with respect to chlorine evolution reaction was discussed on the basis of the determined order of reactions, which apparently increases with increasing Ru content.
Trvalý link: https://hdl.handle.net/11104/0353560