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- W3215726102 abstract "The cytochrome-like Copper/Sulfur/Graphite electrocatalyst (Cu-S-G) was successfully produced via a facile low temperature process with an impressive performance for oxygen reduction reaction (ORR). The incorporation of trace amounts of copper atoms (andlt; 4%) in the form of copper phthalocyanine (CuPc) noticeably enhanced activity of Sulfur/Graphite (S-G) composite for ORR. The catalytic performance was evaluated by cyclic voltammetry (CV) and linear sweep voltammetry (LSV) methods on a rotating-disk electrode (RDE) in alkaline medium (ΔE = 0.00 to 1.20V vs. Reversible Hydrogen Electrode: RHE). The novel copper-based catalyst was shown superior efficiency compared to platinum base electrocatalyst (Pt0.2/C0.8). The number of electrons consumed (n) per O2 in Cu-S-G was found to vary between 3.87 and 3.90 at a wide range of low overpotentials, which indicates an efficient four-electron pathway from O2 to H2O. Also, the estimated Tafel slopes demonstrate insignificant amount of copper oxide in the surface of electrocatalyst. The Cu-S-G exhibits superior electroactivity durability (ΔE1/2 = -21 mV after 10,000 cycles). We believe that the rather high ORR activity (n ≈ 4 and EOnset=1.06 V vs. RHE) is governed by a unique bio-inspired structure and novel active sites formed upon the anchoring of copper atoms onto the S-G structure." @default.
- W3215726102 created "2021-12-06" @default.
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- W3215726102 date "2020-01-01" @default.
- W3215726102 modified "2023-10-17" @default.
- W3215726102 title "Synthesis of Cytochrome-like Copper/Sulfur/Graphite Hybrid as a Cathode Catalyst for Oxygen Reduction with High Selective Four-electron Pathway in Alkaline Medium" @default.
- W3215726102 doi "https://doi.org/10.52568/000665" @default.
- W3215726102 hasPublicationYear "2020" @default.
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