Archivio Istituzionale della RicercaThe effect of alkali incorporation on different cobalt and manganese oxides structures was evaluated through the oxygen evolution reaction (OER) in basic media. Cobalt oxide nanostructured by potassium (K0.25CoO2) shows interesting behavior mainly at low over potential, performing as close as cobalt spinel type (Co3O4). A compromise between K incorporation, which occur mainly above 700 °C and porosity needs to be optimized in order to boost the OER without losing the materials nanostructure. Alkali incorporation can lead to enhanced anion mobility and consequently increase the life time of the catalyst, when high quantity products are needed, using a liquid electrolyte, such as KOH.
Controlled potassium nanostructuration of cobalt and manganese oxide based electrocatalyts toward oxygen evolution reaction in alkaline media / MONTEVERDE VIDELA, ALESSANDRO HUGO; Jakubek, T.; Stelmachowski, PAWEL JAN; Kotarba, K.; Specchia, Stefania. - ELETTRONICO. - (2016). (Intervento presentato al convegno The International Conference on Electrochemical Energy Science and Technology (EEST2016) tenutosi a Kunming (P.R. China) nel 16-22/08/2016).
Controlled potassium nanostructuration of cobalt and manganese oxide based electrocatalyts toward oxygen evolution reaction in alkaline media
MONTEVERDE VIDELA, ALESSANDRO HUGO;STELMACHOWSKI, PAWEL JAN;SPECCHIA, STEFANIA
2016
Abstract
The effect of alkali incorporation on different cobalt and manganese oxides structures was evaluated through the oxygen evolution reaction (OER) in basic media. Cobalt oxide nanostructured by potassium (K0.25CoO2) shows interesting behavior mainly at low over potential, performing as close as cobalt spinel type (Co3O4). A compromise between K incorporation, which occur mainly above 700 °C and porosity needs to be optimized in order to boost the OER without losing the materials nanostructure. Alkali incorporation can lead to enhanced anion mobility and consequently increase the life time of the catalyst, when high quantity products are needed, using a liquid electrolyte, such as KOH.
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https://hdl.handle.net/11583/2648549
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