Electrochemical studies on Alizarin Red S as Negolyte for Redox Flow Battery: A Preliminary Study

Khor, Ai Chia and Mohd Rusllim, Mohamed and K. F., Chong and P. K., Leung (2018) Electrochemical studies on Alizarin Red S as Negolyte for Redox Flow Battery: A Preliminary Study. International Journal of Engineering & Technology, 7 (4.35). 375- 377. ISSN 2227-524X. (Published)

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Redox flow battery (RFB) has received tremendous attention as energy storage system coupled with renewable energy sources. In this paper, a low-cost alizarin red S (ARS) organic dye is proposed to serve as the active material for the negative electrode reaction for or- ganic redox flow batteries. Cyclic voltammetry has been conducted under a number of operating conditions to reveal the electrochemical performance of this molecule. The results suggest that ARS is highly reversible at low electrode potential (c.a. 0.082 V vs. standard hy- drogen electrode), indicating that ARS is a promising negative electrode material for organic redox flow batteries. The diffusion coeffi- cient of ARS is calculated in the range of 6.424 x 10-4 cm2 s -1 , This has indicated fast diffusion rate and electrochemical kinetics for oxi- dation and reduction in higher concentration of ARS. It has been found out that the higher concentration of ARS in base electrolyte cause lowest diffusion coefficient due to solubility issue of ARS.

Item Type: Article
Uncontrolled Keywords: Alizarin red S; Negolyte; Organic redox flow battery; Renewable energy storage; Redox materi
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Faculty/Division: Institute of Postgraduate Studies
College of Engineering
Depositing User: Noorul Farina Arifin
Date Deposited: 13 Aug 2020 07:32
Last Modified: 13 Aug 2020 07:32
URI: http://umpir.ump.edu.my/id/eprint/29048
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