Pseudocapacitive performance of phenothiazine functionalized graphene aerogel

Lee, Soon Poh and Ali, Gomaa A.M. and Assiri, Mohammed Ali and Kong, Kien Voon and Teo, Ellie Yi Lih and Chong, Kwok Feng (2023) Pseudocapacitive performance of phenothiazine functionalized graphene aerogel. Applied Surface Science, 613 (156069). pp. 1-11. ISSN 0169-4332. (Published)

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Abstract

This study utilizes light adsorbing molecule, phenothiazine (PTZ) to reduce graphene oxide (GO) and functionalize into PTZ-rGO aerogel (PTZ-rGO). The UV excited PTZ reduces GO via electron transfer while PTZ is simultaneously oxidized and functionalized onto rGO to produce PTZ-rGO aerogel. The optimum incorporation of PTZ on rGO sheets renders good electrochemical active surface area of 495.71 m2 g−1 and enhances the diffusion behavior up to 41.92%. This pseudocapacitive effect and the excellent surface property provide promising charge storage results of 235.5 F g−1 at 0.5 A g−1. Furthermore, the stable charge-discharge cycles with 92% capacitance retention after 10,000 cycles render it an excellent electrode material for supercapacitor fabrication.

Item Type:	Article
Additional Information:	Indexed by Scopus
Uncontrolled Keywords:	Functionalization; Graphene aerogel; Phenothiazine; Pseudocapacitive; Supercapacitor
Subjects:	H Social Sciences > HD Industries. Land use. Labor Q Science > Q Science (General) T Technology > T Technology (General)
Faculty/Division:	Faculty of Industrial Sciences And Technology Institute of Postgraduate Studies
Depositing User:	Mr Muhamad Firdaus Janih@Jaini
Date Deposited:	28 May 2024 07:54
Last Modified:	28 May 2024 07:54
URI:	http://umpir.ump.edu.my/id/eprint/40731
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