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Asymmetric Performance Testing of Carbon Felt Electrodes to Identify the Limiting Electrode in Vanadium Redox Flow Battery
Journal article

Asymmetric Performance Testing of Carbon Felt Electrodes to Identify the Limiting Electrode in Vanadium Redox Flow Battery

Ertan Agar, Christopher R Dennison, Kevin W Knehr and Emin Caglan Kumbur
ECS transactions, v 53(7), pp 69-73
03 May 2013

Abstract

In this study, the performance of a vanadium redox flow battery (VRFB) is measured with raw and heat-treated electrodes using symmetric (i.e., same electrode used in both half-cell) and asymmetric electrode configuration (i.e., different electrodes used in positive and negative half-cells). The goal with these tests is to determine the effects of the surface functionalization on the half-cell reactions and identify the half-cell that limits the performance of a VRFB. Results indicate that surface functionalization has a minimal impact on the reaction kinetics at the positive half-cell; however it substantially affects the reaction kinetics of the negative half-cell, suggesting that the negative half-cell electrode may limit the performance of these systems.

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Web of Science research areas
Electrochemistry
Energy & Fuels
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