Tailoring a hierarchical porous carbon electrode from carbon black via 3D diatomite morphology control for enhanced electrochemical performance.

Autor:	Appiah ES; Department of Materials Engineering, College of Engineering, Kwame Nkrumah University of Science and Technology Kumasi Ghana anthonydrews@gmail.com foagyemang88@gmail.com maddonartey@knust.edu.gh.; Department of Sustainable Mineral Resource Development, University of Energy and Natural Resources Sunyani Ghana appiaheugenesefa@gmail.com., Mensah-Darkwa K; Department of Materials Engineering, College of Engineering, Kwame Nkrumah University of Science and Technology Kumasi Ghana anthonydrews@gmail.com foagyemang88@gmail.com maddonartey@knust.edu.gh.; The Brew-Hammond Energy Centre, Kwame Nkrumah University of Science and Technology (KNUST) Kumasi Ghana kmdarkwa.coe@knust.edu.gh., Andrews A; Department of Materials Engineering, College of Engineering, Kwame Nkrumah University of Science and Technology Kumasi Ghana anthonydrews@gmail.com foagyemang88@gmail.com maddonartey@knust.edu.gh., Agyemang FO; Department of Materials Engineering, College of Engineering, Kwame Nkrumah University of Science and Technology Kumasi Ghana anthonydrews@gmail.com foagyemang88@gmail.com maddonartey@knust.edu.gh., Nartey MA; Department of Materials Engineering, College of Engineering, Kwame Nkrumah University of Science and Technology Kumasi Ghana anthonydrews@gmail.com foagyemang88@gmail.com maddonartey@knust.edu.gh., Makgopa K; Department of Chemistry, Faculty of Science, Tshwane University of Technology Pretoria South Africa Makgopak@tutac.za., Hou Y; Hubei Key Laboratory of Energy Storage and Power Battery, School of Materials Science and Engineering, Hubei University of Automotive Technology Shiyan China yongdan.hou@huat.edu.cn.; Shiyan Industrial Technology Research Institute of Chinese Academy of Engineering Shiyan China., Aggrey P; Hierarchically Structured Materials Laboratory, Skolkovo Institute of Science and Technology 121205 Moscow Russia Patrick.aggrey@skoltech.ru., Quansah DA; Department of Mechanical Engineering, College of Engineering, Kwame Nkrumah University of Science and Technology Kumasi Ghana daquansah.coe@knust.edu.gh.
Jazyk:	angličtina
Zdroj:	Nanoscale advances [Nanoscale Adv] 2024 Sep 25. Date of Electronic Publication: 2024 Sep 25.
DOI:	10.1039/d4na00680a
Abstrakt:	Carbon black, a nano-porous material usually derived from the pyrolysis of waste tyres possesses varied particle sizes and morphology making it a viable material for several engineering applications. However, the high tendency for CB to agglomerate remains a challenge. To address this, bio-templating has been employed to produce a nanostructured porous carbon electrode material for supercapacitor applications using diatomite as a template. Diatomite-synthesized activated carbon (DSAC) was fabricated through a three-step process involving acid treatment of diatomite, thermal activation of carbon black, and bio-template synthesis. The resulting material was thoroughly characterized using XRD, Raman spectroscopy, BET analysis, and SEM imaging. Its electrochemical properties were assessed through cyclic voltammetry, galvanostatic charge-discharge, and electrochemical impedance spectroscopy. The DSAC material exhibited a high specific surface area of 266.867 m 2 g -1 , pore volume of 0.6606 cm 3 g -1 , and mean pore radius of 1.8943 nm. The electrochemical evaluation revealed that DSAC demonstrates excellent electrochemical performance, achieving a high specific capacitance of 630.18 F g -1 and retaining 94.29% capacitance after 5000 cycles at 1 A g -1 . The DSAC electrode is eco-friendly and a promising candidate for supercapacitor applications. Competing Interests: The authors declare no conflict of interest, financial or otherwise. (This journal is © The Royal Society of Chemistry.)
Databáze:	MEDLINE
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