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Title:Tuning the activity of iron phosphide electrocatalysts for sustainable energy conversion
Authors:ID Emin, Saim (Author)
ID Chouki, Takwa (Author)
ID Machreki, Manel (Author)
Files:URL https://ecs.confex.com/ecs/244/meetingapp.cgi/Paper/180838
 
Language:English
Work type:Unknown
Typology:1.10 - Published Scientific Conference Contribution Abstract (invited lecture)
Organization:UNG - University of Nova Gorica
Abstract:Electrocatalysis is a promising approach for the sustainable conversion of renewable energy sources, such as solar and wind power, into chemical energy that can be stored and used on demand. By harnessing renewable electricity to drive electrochemical reactions, we can produce fuels and chemicals in a way that is both clean and cost-effective. As we continue to develop new electrocatalytic materials and improve the efficiency of existing processes, the potential for electrocatalysis to transform our energy system will only continue to grow. We report the use of iron phosphide (Fe2P, FeP) in several electrocatalytic applications, such as reduction of nitrate ions (NO3), hydrogen and oxygen evolution studies. The electrochemical reduction of the nitrate ion (NO3), a widespread water pollutant, to valuable ammonia (NH3) is a promising approach to achieving green energy conservation. Particularly, FeP and Fe2P phases were successfully demonstrated as efficient catalysts for NH3 generation. Detection of the in-situ formed product using a bi-potentiostat was achieved by electrooxidation of NH3 to nitrogen (N2) on a Pt electrode. The Fe2P catalyst exhibits the highest Faradaic efficiency (96%) for NH3 generation with a yield (0.25 mmol h−1 cm-−2 or 2.10 mg h−1 cm−2) at −0.55 V vs. reversible hydrogen electrode (RHE). To get relevant information about the reaction mechanisms and the fundamental origins behind the better performance of Fe2P, density functional theory (DFT) calculations were performed.
Keywords:Fe2P, FeP, electrocatalysis, NH3 reduction, counter electrode
Year of publishing:2023
Number of pages:1 spletni vir
PID:20.500.12556/RUNG-8672-cae8279d-e170-93ef-aafc-97cb852417af New window
COBISS.SI-ID:174650371 New window
UDC:54
NUK URN:URN:SI:UNG:REP:VCJQRXWJ
Publication date in RUNG:04.12.2023
Views:621
Downloads:4
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Record is a part of a monograph

Title:244th ECS Meeting : Gothenburg, October 8-12, 2023
Place of publishing:New Jersey
Publisher:ǂThe ǂElectrochemical Society
Year of publishing:2023
COBISS.SI-ID:170937347 New window

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