Selenium-Coupled Reduced Graphene Oxide as Single-Atom Site Catalyst for Direct Four-Electron Oxygen Reduction Reaction
Source abstract
Abstract
A single-atom site catalyst for direct four electron oxygen reduction reaction (ORR) is identified where selenium (ultrasmall amount of Se, ≲1 at. % ) is the active center that couples reduced graphene oxide (rGO) sheets. This metal-free catalyst is found to be undergoing ORR through the direct four-electron pathway in alkaline medium, similar to platinum, whereas rGO prefers a two-electron path, and the experimental observation is correlated with theoretical study. The role of Se-like elements in graphene, which have similar electronegativity as carbon, is unraveled with a detailed density functional theory-based analyses.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Electrocatalysts for Energy Conversion · Advanced battery technologies research · Advancements in Battery Materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Tata Institute of Fundamental Research - Hyderabad, Sy. No. 36/P, Gopanapally Village, Serilingampally Mandal, Hyderabad 500107, India
School of Physics, Indian Institute of Science Education and Research Thiruvananthapuram, Maruthamala PO, Thiruvananthapuram, Kerala 695551, India
School of Physics, University of Hyderabad, Hyderabad 500046, India
Funding
Tata Institute of Fundamental Research
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