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- W2787479562 abstract "A robust triple-component electrocatalyst of sub-2 nm scale consisting of platinum nanoparticles (Pt NPs), iron(II) phthalocyanine (FePc), and reduced graphene oxide (rGO) composite (Pt/FePc@rGO) was fabricated for oxygen reduction reaction (ORR) evaluation. The catalyst was prepared using a Suspension Unit for Reactive Evolution (SURE) approach. The merit of the SURE approach lies in the ease of formation of smaller Pt NPs with a size of 1.76 ± 0.26 nm and uniformity of dispersion on rGO surface by hydrogen reduction. The Pt/FePc@rGO catalysts show superior mass activities of 281.29 mA mgPt–1 at 0.86 V in an alkaline potassium hydroxide (KOH) electrolyte system. Compared with the commercial Pt on carbon (Pt/C) catalysts, the ORR current density of the Pt/FePc@rGO catalysts shows 2.8 times greater under the same operating conditions, while the average Pt loading is only approximately one-third of the commercial catalyst (Pt/C). The result of accelerated durability test indicates the Pt/FePc@rGO catalysts show ∼8 mV decrease in half-wave potential after 10 000 cycles 0–1.23 V (vs reversible hydrogen electrode) potential cycling; while the Pt/C catalyst was subjected much larger shift (∼53 mV). Methanol tolerance study also indicates the Pt/FePc@rGO shows a 2 mV shift corresponding to a current density of 2.5 mA cm–2, while the commercial Pt/C shows 238 mV shift when an aliquot of 0.1 M methanol and 0.1 M KOH aqueous electrolyte was added. All these results demonstrate that the obtained catalyst exhibited enhanced electrocatalytic activity, excellent antimethanol poisoning property, and long-term stability." @default.
- W2787479562 created "2018-02-23" @default.
- W2787479562 creator A5031155103 @default.
- W2787479562 creator A5035364186 @default.
- W2787479562 creator A5041470064 @default.
- W2787479562 creator A5047224338 @default.
- W2787479562 creator A5049349334 @default.
- W2787479562 creator A5081931444 @default.
- W2787479562 date "2018-02-14" @default.
- W2787479562 modified "2023-10-15" @default.
- W2787479562 title "A Superior Oxygen Reduction Reaction Electrocatalyst Based on Reduced Graphene Oxide and Iron(II) Phthalocyanine-Supported Sub-2 nm Platinum Nanoparticles" @default.
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- W2787479562 doi "https://doi.org/10.1021/acsanm.7b00173" @default.
- W2787479562 hasPublicationYear "2018" @default.
- W2787479562 type Work @default.