Activated Carbon derived from oil-palm empty fruit bunch combined with Copper Oxide for high performance symmetric supercapacitors

Name: Tulakarn Ketwong

LCSH: Kasetsart University -- Theses. M.Eng. (Mechanical Engineering) 2021

Classification :.LCCS: TP245.C4

LCSH: Kasetsart University. -- Department of Mechanical Engineering -- Theses

LCSH: Carbon, Activated

LCSH: Supercapacitors

LCSH: Copper oxide

LCSH: Electrolytes

Abstract: This study reports a comparative study on the integration of double-layer capacitive activated carbon with pseudocapacitive CuO particles from different pilot-scale empty fruit bunch (EFB) char production procedures. The CuO/activated carbon (CuO/AC) electrode with exceptional electrochemical performance were efficaciously produced by carbonization or hydrothermal carbonization (HTC) through chemical activation. The specific surface area and total pore volume of the produced AC was 810–1,008 m2/g and 0.53 – 0.79 cm3/g, respectively. The study aims to investigate the difference pilot-scale char productions and electrolytes namely 1 M Na2SO4and 2 M KOH on electrochemical properties of AC electrodes. In the test of three electrode system, AC electrode materials exhibited specific capacitance of 88.13–233.88 F/g. It was found that the composite materials presented the superior electrochemical performance. The synergetic of AC and copper oxide generated higher specific capacitance up to 151.88–495.38 F/g. Moreover, the tests of application were done by using two-electrode cell. The energy density of the symmetric supercapacitor product in KOH electrolyte reached the maximum of energy density of 45.67 Wh/kg at power density of 2,400 W/kg and could maintain 24.67 Wh/kg at high power density of 24,000 W/kg. In addition to Na2SO4electrolyte, the cells achieved the maximum energy density of 24.03 Wh/kg at power density of 2,800 W/kg. In the cyclic stability test, the initial capacitance was retained at 92.7% after 5,000 cycles with the Na2SO4. These results confirmed that CuO/AC is a promising electrode material which can be mass produced from pilot-scale to perform the excellently electrochemical energy storage with outstanding long cycling life.

Kasetsart University. Office of the University Library

Address: Bangkok

Email: tdckulib@ku.ac.th

Name: Chinnathan Areeprasert

Role: Thesis Advisor

Created: 2021

Modified: 2025-07-17

Issued: 2025-07-17

วิทยานิพนธ์/Thesis

application/pdf

URL: https://www.lib.ku.ac.th/KUthesis/2564/tulakarn-ket-all.pdf

CallNumber: TP245.C4 .T85

eng

DegreeName: Master of Engineering

Level: Master's Degree

Descipline: Mechanical Engineering

Grantor: Kasetsart University

©copyrights Kasetsart University

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