Oct, 31, 2024

Vol.57 No.5

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Review

  • The Korean Society of Surface Science and Engineering
  • Volume 56(5); 2023
  • Article

Review

The Korean Society of Surface Science and Engineering 2023;56(5):320-327. Published online: Oct, 31, 2023

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DOI : 10.5695/JSSE.2023.56.5.320

Structural and Electrical Properties of Nickel Hydroxide Electrode Prepared by Hydrothermal Synthesis on Nickel Foam

  • Hyunjin Chaa, Seokhee Leea, Jeonghwan Parka, Young-Guk Sona, Donghyun Hwangb,*
    a School of Materials Science and Engineering, Pusan National University, Busan 46241, Korea b Department of Batteries Science and Engineering, Silla University, Busan 46958, Korea
Abstract

In this study, the nickel hydroxide (Ni(OH)2) electrode for supercapacitor was prepared via hydrothermal method. Based on the nickel (Ni) foam, the electrode does not require any additional binder material or post-processing. Nickel nitrate (Ni(NO3)2) and hexamethylenetetramine (C6H12N4) were used for synthesis, and the synthesis condition was 12 hours at 80 °C. X-ray diffraction (XRD) and field-emission scanning electron microscopy (FE-SEM) were used to analyze the structural characteristics of the electrode, and it shown that the nickel hydroxide was successfully prepared after only the one-step hydrothermal synthesis. The electrochemical properties were analyzed through the half-cell test. The prepared electrode shown a pair of oxidation/reduction peaks, indicating that the driving method included the redox reaction on the electrode surface. After the charge/discharge test, the specific capacitance was calculated as the value of 438 F/g at 3 A/g.

Keywords Hydrothermal synthesis, Nickel hydroxide, Nickel foam, Supercapacitor