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Naslov:Iron phosphides as efficient electrocatalyst for hydrogen evolution and energy conversion : abstract
Avtorji:ID Emin, Saim, Materials Research Laboratory, University of Nova Gorica, Ajdovscina 5270, Slovenia (Avtor)
ID Chouki, Takwa, Materials Research Laboratory, University of Nova Gorica, Ajdovscina 5270, Slovenia (Avtor)
Datoteke: Gradivo nima datotek, ki so prostodostopne za javnost. Gradivo je morda fizično dosegljivo v knjižnici fakultete, zalogo lahko preverite v COBISS-u. Povezava se odpre v novem oknu
Jezik:Angleški jezik
Vrsta gradiva:Delo ni kategorizirano
Tipologija:1.12 - Objavljeni povzetek znanstvenega prispevka na konferenci
Organizacija:UNG - Univerza v Novi Gorici
Opis:Transition metal phosphides have been demonstrated as outstanding multifunctional catalysts in a broad range of energy conversion technologies. We developed a solvothermal synthesis approach for iron phosphide electrocatalystsusing a low-cost phosphorus precursor.The synthetic protocol allows for the preparation of a Fe2P phase at 300°C and FeP phase at 350°C. The obtained compounds were coated on conductive substrates to prepare catalysts thin films. Here, we exploited different phases of iron phosphide as counter electrodes (CEs) in dye-sensitized solar cells (DSSCs) with an I−/I3− based electrolyte [2]. The solar-to-current conversion efficiency of the solar cells assembled with the Fe2P material reached 3.96±0.06%,which is comparable to the device assembled with a platinum (Pt) CE. In addition to DSSC applications, the iron phosphides were used as electrocatalyst for H2 evolution (Fig. 1). To enhance the catalytic activities of obtained iron phosphide particles, heat-treatments were carried out at elevated temperatures.Annealing at 500°C induced structural changes in the samples: (i) Fe2P provided a pure Fe3P phase (Fe3P−500°C) and (ii) FeP transformed into a mixture of iron phosphide phases (Fe2P/FeP−500°C). The electrocatalytic activities for H2 evolution of heat-treated catalysts were studied in 0.5 M sulfuric acid (H2SO4). The HER activities of the iron phosphide catalyst were found to be phase dependent. The lowest recorded overpotential of 110 mV at 10 mA cm−2 vs. a reversible hydrogen electrode was achieved with Fe2P/FeP−500°C catalyst. The developed procedure is an elegant approach to tune the composition of iron phosphide catalyst and control the morphology of particles.
Ključne besede:Iron phosphides electrocatalyst hydrogen evolution energy conversion
Leto izida:2021
PID:20.500.12556/RUNG-7913 Novo okno
COBISS.SI-ID:140834819 Novo okno
NUK URN:URN:SI:UNG:REP:5PGKGUSW
Datum objave v RUNG:06.02.2023
Število ogledov:1304
Število prenosov:0
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Gradivo je del monografije

Naslov:Iron phosphides as efficient electrocatalyst for hydrogen evolution and energy conversion
Kraj izida:Osaka, Japan
Leto izida:2021
Prireditelj konference:the 4th International Symposium on Hydrogen Energy and Energy Technologies

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