Electrocatalytic properties of Te incorporated Ni(OH)2 microcrystals grown on Ni foam

Jung-Il Lee (이정일); Seong Gyun Oh (오성균); yun jeong kim (김윤정); PARKSEONHJU (박성주); sin gyoung seon (신경선); Ji Hyeon Kim (김지현); Jeong-ho Ryu (류정호)

doi:10.6111/JKCGCT.2021.31.2.096

Electrocatalytic properties of Te incorporated Ni(OH)2 microcrystals grown on Ni foam

Journal of the Korean Crystal Growth and Crystal Technology
Abbr : J. Korean Cryst. Growth Cryst. Technol.
2021, 31(2), pp.96-101
DOI : 10.6111/JKCGCT.2021.31.2.096
Publisher : The Korea Association Of Crystal Growth, Inc.
Research Area : Engineering > Materials Science and Engineering
Received : March 25, 2021
Accepted : April 2, 2021
Published : April 30, 2021

Jung-Il Lee ¹, Seong Gyun Oh ¹, yun jeong kim ¹, PARKSEONHJU ¹, sin gyoung seon ¹, Ji Hyeon Kim ¹, Jeong-ho Ryu ¹

¹한국교통대학교

Accredited

ABSTRACT

Developing effective and earth-abundant electrocatalyst for oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) is critical for the commercialization of a water splitting system. In particular, the overpotential ofthe OER is relatively higher than the HER, and thus, it is considered that one of the important methods to enhance the performance of the electrocatalyst is to reduce the overpotential of the OER. We report effects of incorporation ofmetalloid into Ni(OH)2 microcrystal on electrocatalytic activities. In this study, Te incorporated Ni(OH)2 (χTe-Ni(OH)2) were grown on three-dimensional porous NF by a facile solvothermal method with χ=1, 3 and 5. Homogeneous microplatestructure on the NF was clearly observed for the Ni(OH)2/NF and Te-Ni(OH)2/NF samples. However, irregular and collapsed nanostructures were found on the surface of nickel foam when Te precursor ratio is (χ) over 3. ElectrocatalyticOER properties were analysed by Linear sweep voltammetry (LSV) and Electrochemical impedance spectroscopy (EIS). The amount of Te incorporation used in the electrocatalytic reaction was found to play a crucial role in improving catalytic activity. The optimum Te amount (χ) introduced into the Ni(OH)2/NF was discussed with respect to their OER performance.

KEYWORDS

Elecrocatalysis, Ni(OH)2 microcrystals, Water splitting, OER

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* References for papers published after 2023 are currently being built.

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This paper was written with support from the National Research Foundation of Korea.

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Journal of the Korean Crystal Growth and Crystal Technology 2023 KCI Impact Factor : 0.19

Electrocatalytic properties of Te incorporated Ni(OH)2 microcrystals grown on Ni foam

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* References for papers published after 2023 are currently being built.

Journal of the Korean Crystal Growth and Crystal Technology 2023 KCI Impact Factor : 0.19

Electrocatalytic properties of Te incorporated Ni(OH)2 microcrystals grown on Ni foam

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