Pt4+ as an Active Site for Oxygen Evolution Reaction in La1–xSrxCo1–yPtyO3
Source abstract
Abstract
This study presents an investigation on the role of Pt 4+ in Pt-doped La 1– x Sr x CoO 3 (LSPtCO) perovskite for oxygen evolution reaction (OER) activity. LSPtCO with Pt in the +4 oxidation state shows the highest activity for OER in comparison to undoped La 1– x Sr x CoO 3 (LSCO) and Pt metal-supported LSCO (Pt is in the zero oxidation state). These results indicate that a high oxidation state of Pt is favorable for the OER activity. Pt 4+ is also shown as the active center for the OER reaction as its reductive treatment decreases the OER activity significantly. Thus, the formation of high-valent Pt is a key factor in fabricating an active OER catalyst. While Pt metal may not be a good catalyst for OER, Pt 4+ is significantly superior, especially in LSCO.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Electrocatalysts for Energy Conversion · Fuel Cells and Related Materials · Advanced battery technologies research
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Chemistry, Indian Institute of Technology Gandhinagar, Gandhinagar 382355, India
Funding
Ministry of Human Resource Development
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