A novel approach for forming carbon nanorods on the surface of carbon felt electrode by catalytic etching for high-performance vanadium redox flow battery

Abbas, Saleem; Lee, Hyuck; Hwang, Jun Gi; Mehmood, Asad; Shin, Hyun-Jin; Mehboob, Sheeraz; Lee, Juyoung; Ha, Heung Yong

doi:10.1016/j.carbon.2017.11.066

Cited by 104 publications

(57 citation statements)

References 35 publications

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“…Carbon nanorods were prepared by a chemical etching procedure with cobalt catalyst on carbon felt by Abbas et al [296]. Etching time and temperature were optimized.…”

Section: Structural Modification Of Carbonmentioning

confidence: 99%

Electrocatalysis at Electrodes for Vanadium Redox Flow Batteries

Holze

2018

Batteries

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Flow batteries (also: redox batteries or redox flow batteries RFB) are briefly introduced as systems for conversion and storage of electrical energy into chemical energy and back. Their place in the wide range of systems and processes for energy conversion and storage is outlined. Acceleration of electrochemical charge transfer for vanadium-based redox systems desired for improved performance efficiency of these systems is reviewed in detail; relevant data pertaining to other redox systems are added when possibly meriting attention. An attempt is made to separate effects simply caused by enlarged electrochemically active surface area and true (specific) electrocatalytic activity. Because this requires proper definition of the experimental setup and careful examination of experimental results, electrochemical methods employed in the reviewed studies are described first.

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“…Carbon nanorods were prepared by a chemical etching procedure with cobalt catalyst on carbon felt by Abbas et al [296]. Etching time and temperature were optimized.…”

Section: Structural Modification Of Carbonmentioning

confidence: 99%

Electrocatalysis at Electrodes for Vanadium Redox Flow Batteries

Holze

2018

Batteries

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“…After thermal treatment of GF and CF, the reduction peak current ( I pc ) and the oxidation peak current ( I pa ) of T‐GF and T‐CF are significantly improved. The relationship between the peak current ( I p ) and each parameter is as shown in Equation :

I_{p} = 2.99 \times 10^{5} {An}^{\frac{3}{2}} C_{O} {(α D_{normalO} v)}^{\frac{1}{2}},

…”

Section: Resultsmentioning

confidence: 99%

Investigations on physicochemical properties and electrochemical performance of graphite felt and carbon felt for iron‐chromium redox flow battery

et al. 2020

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Summary In this paper, polyacrylonitrile‐based graphite felt (GF), carbon felt (CF) and the effect of thermal activation on them with or without the catalyst (BiCl3) are comprehensively investigated for iron‐chromium redox flow battery (ICRFB) application. The physical‐chemical parameters of GF and CF after the thermal activation is affected significantly by their graphitization degree, oxygen functional groups, and surface area. Cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) results manifest that GF and CF before and after the thermal activation have different electrocatalytic activities owing to oxygen functional groups number increase and the graphitization degree decrease. In terms of the capacity decay rate, as oxygen functional groups provide shorter electrocatalytic pathways than bismuth ions, the performance of GF and CF after the thermal activation is more ideal. As a result, GF before and after the thermal activation exhibits higher efficiency (EE: 86%) and better stability at a charge‐discharge current density of 60 mA·cm−2 than those of CF during charge‐discharge cycling, as the dominant limitation in an ICRFB is ohmic and activation polarization. Therefore, GF after thermal activation together with the addition of BiCl3 in the electrolyte is a more promising electrode material for ICRFBs application than CF.

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“…Constantly expanding global industrial development and rapid growth of world human population has issued toward drastic increase of energy demand. Enerdata reported a total of 82 % energy derived from fossil fuel resources (coal, oil and gas) in 2015 [1]. Also in the similar year, worldwide energy consumption for G20 countries was reported as 10.9 Gtoe, in contrast to 8.1 Gtoe in 2000; this indicated an increment of 34 % [1].…”

Section: Introductionmentioning

confidence: 93%

Electrochemical Studies on Alizarin Red S as Negolyte for Redox Flow Battery: a Preliminary Study

Khor¹,

Mohamed²,

Feng³

et al. 2018

IJET

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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 organic 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 hydrogen electrode), indicating that ARS is a promising negative electrode material for organic redox flow batteries. The diffusion coefficient 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 oxidation 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.

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A novel approach for forming carbon nanorods on the surface of carbon felt electrode by catalytic etching for high-performance vanadium redox flow battery

Cited by 104 publications

References 35 publications

Electrocatalysis at Electrodes for Vanadium Redox Flow Batteries

Electrocatalysis at Electrodes for Vanadium Redox Flow Batteries

Investigations on physicochemical properties and electrochemical performance of graphite felt and carbon felt for iron‐chromium redox flow battery

Electrochemical Studies on Alizarin Red S as Negolyte for Redox Flow Battery: a Preliminary Study

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