니켈 폼(Ni foam)에 수열 합성법으로 제조한 수산화니켈(Ni(OH)2) 전극의 구조적 및 전기적 특성
Structural and Electrical Properties of Nickel Hydroxide Electrode Prepared by Hydrothermal Synthesis on Nickel Foam
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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.
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.
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