Modulating electronic and structural properties of NiCo- layered double hydroxide with iodine: As an efficient electro-catalyst for the oxygen evolution reaction

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61988987%3A17310%2F23%3AA2402LE4" target="_blank" >RIV/61988987:17310/23:A2402LE4 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0360319923014581?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0360319923014581?via%3Dihub</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Modulating electronic and structural properties of NiCo- layered double hydroxide with iodine: As an efficient electro-catalyst for the oxygen evolution reaction

Popis výsledku v původním jazyce

The development of an earth-abundant, highly active, long-lasting electro-catalyst for the oxygen evolution reaction (OER) with a novel and improved chemical composition and structure is basically needed since the oxygen evolution reaction is the primary reaction for splitting of water. In this article, we have adopted precipitation technique to create a 2D iodine doped Ni0.5Co0.5 layered double hydroxide (LDH) based electro-catalyst. Several techniques were used to characterize the structural and morphological properties of the electro-catalyst, including powder X-ray diffraction (PXRD), fourier transform infrared spectroscopy (FTIR), field emission scanning electron microscopy (FESEM), energy dispersive X-ray spectroscopy (EDX), and BET analysis. Using cyclic voltammetry (CV), linear sweep voltammetry (LSV), and electrochemical impedance spectroscopy (EIS) in an alkaline environment, OER performance was evaluated. The iodine-doped Ni0.5Co0.5 LDH had exceptional OER performance and required 250 mV (vs RHE) less overpotential to drive geometric catalytic current density of 40 mA cm-2 and lower Tafel slope (98 mVdec-1) than its counterparts. Excellent OER activity was achieved by iodine-doped Ni0.5Co0.5 LDH due to the abundance of active sites, lower charge transfer resistance (Rct), induced oxygen vacancies, and increased pore size to pore diameter ratio. Additionally, the iodine-doped Ni0.5Co0.5 LDH displayed strong long-term stability without degrading throughout the course of the prolonged time period. This case study of iodine doping to Ni0.5Co0.5 LDH illustrates a crucial technique for producing high-performance earth-abundant energy & COPY; 2023 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.

Název v anglickém jazyce

Modulating electronic and structural properties of NiCo- layered double hydroxide with iodine: As an efficient electro-catalyst for the oxygen evolution reaction

Popis výsledku anglicky

The development of an earth-abundant, highly active, long-lasting electro-catalyst for the oxygen evolution reaction (OER) with a novel and improved chemical composition and structure is basically needed since the oxygen evolution reaction is the primary reaction for splitting of water. In this article, we have adopted precipitation technique to create a 2D iodine doped Ni0.5Co0.5 layered double hydroxide (LDH) based electro-catalyst. Several techniques were used to characterize the structural and morphological properties of the electro-catalyst, including powder X-ray diffraction (PXRD), fourier transform infrared spectroscopy (FTIR), field emission scanning electron microscopy (FESEM), energy dispersive X-ray spectroscopy (EDX), and BET analysis. Using cyclic voltammetry (CV), linear sweep voltammetry (LSV), and electrochemical impedance spectroscopy (EIS) in an alkaline environment, OER performance was evaluated. The iodine-doped Ni0.5Co0.5 LDH had exceptional OER performance and required 250 mV (vs RHE) less overpotential to drive geometric catalytic current density of 40 mA cm-2 and lower Tafel slope (98 mVdec-1) than its counterparts. Excellent OER activity was achieved by iodine-doped Ni0.5Co0.5 LDH due to the abundance of active sites, lower charge transfer resistance (Rct), induced oxygen vacancies, and increased pore size to pore diameter ratio. Additionally, the iodine-doped Ni0.5Co0.5 LDH displayed strong long-term stability without degrading throughout the course of the prolonged time period. This case study of iodine doping to Ni0.5Co0.5 LDH illustrates a crucial technique for producing high-performance earth-abundant energy & COPY; 2023 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

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OECD FORD obor

10400 - Chemical sciences

Projekt

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Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2023

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

INT J HYDROGEN ENERG

ISSN

0360-3199

e-ISSN

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Svazek periodika

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Číslo periodika v rámci svazku

15.8.2023

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

13

Strana od-do

27201-27214

Kód UT WoS článku

001051319800001

EID výsledku v databázi Scopus

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