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

The result's identifiers

  • Result code in 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>

  • Result on the web

    <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

Alternative languages

  • Result language

    angličtina

  • Original language name

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

  • Original language description

    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.

  • Czech name

  • Czech description

Classification

  • Type

    J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database

  • CEP classification

  • OECD FORD branch

    10400 - Chemical sciences

Result continuities

  • Project

  • Continuities

    I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Others

  • Publication year

    2023

  • Confidentiality

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

Data specific for result type

  • Name of the periodical

    INT J HYDROGEN ENERG

  • ISSN

    0360-3199

  • e-ISSN

  • Volume of the periodical

  • Issue of the periodical within the volume

    15.8.2023

  • Country of publishing house

    GB - UNITED KINGDOM

  • Number of pages

    13

  • Pages from-to

    27201-27214

  • UT code for WoS article

    001051319800001

  • EID of the result in the Scopus database