Study of flow behavior in all-vanadium redox flow battery using spatially resolved voltage distribution

Arjun Bhattarai; Nyunt Wai; Rüdiger Schweiss; Adam Whitehead; Günther G. Scherer; Purna C. Ghimire; Tam D. Nguyen; Huey Hoon Hng

doi:10.1016/j.jpowsour.2017.06.039

Study of flow behavior in all-vanadium redox flow battery using spatially resolved voltage distribution

Arjun Bhattarai, Nyunt Wai, Rüdiger Schweiss, Adam Whitehead, Günther G. Scherer, Purna C. Ghimire, Tam D. Nguyen, Huey Hoon Hng^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

29 Citations (Scopus)

Abstract

Uniform flow distribution through the porous electrodes in a flow battery cell is very important for reducing Ohmic and mass transport polarization. A segmented cell approach can be used to obtain in-situ information on flow behaviour, through the local voltage or current mapping. Lateral flow of current within the thick felts in the flow battery can hamper the interpretation of the data. In this study, a new method of segmenting a conventional flow cell is introduced, which for the first time, splits up both the porous felt as well as the current collector. This dual segmentation results in higher resolution and distinct separation of voltages between flow inlet to outlet. To study the flow behavior for an undivided felt, monitoring the OCV is found to be a reliable method, instead of voltage or current mapping during charging and discharging. Our approach to segmentation is simple and applicable to any size of the cell.

Original language	English
Pages (from-to)	443-452
Number of pages	10
Journal	Journal of Power Sources
Volume	360
DOIs	https://doi.org/10.1016/j.jpowsour.2017.06.039
Publication status	Published - 2017
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2017 Elsevier B.V.

ASJC Scopus Subject Areas

Renewable Energy, Sustainability and the Environment
Energy Engineering and Power Technology
Physical and Theoretical Chemistry
Electrical and Electronic Engineering

Keywords

Flow distribution
Porous electrodes
Segmented cell
Vanadium redox flow battery

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/j.jpowsour.2017.06.039

Cite this

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title = "Study of flow behavior in all-vanadium redox flow battery using spatially resolved voltage distribution",

abstract = "Uniform flow distribution through the porous electrodes in a flow battery cell is very important for reducing Ohmic and mass transport polarization. A segmented cell approach can be used to obtain in-situ information on flow behaviour, through the local voltage or current mapping. Lateral flow of current within the thick felts in the flow battery can hamper the interpretation of the data. In this study, a new method of segmenting a conventional flow cell is introduced, which for the first time, splits up both the porous felt as well as the current collector. This dual segmentation results in higher resolution and distinct separation of voltages between flow inlet to outlet. To study the flow behavior for an undivided felt, monitoring the OCV is found to be a reliable method, instead of voltage or current mapping during charging and discharging. Our approach to segmentation is simple and applicable to any size of the cell.",

keywords = "Flow distribution, Porous electrodes, Segmented cell, Vanadium redox flow battery",

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year = "2017",

doi = "10.1016/j.jpowsour.2017.06.039",

language = "English",

volume = "360",

pages = "443--452",

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T1 - Study of flow behavior in all-vanadium redox flow battery using spatially resolved voltage distribution

AU - Bhattarai, Arjun

AU - Wai, Nyunt

AU - Schweiss, Rüdiger

AU - Whitehead, Adam

AU - Scherer, Günther G.

AU - Ghimire, Purna C.

AU - Nguyen, Tam D.

AU - Hng, Huey Hoon

PY - 2017

Y1 - 2017

N2 - Uniform flow distribution through the porous electrodes in a flow battery cell is very important for reducing Ohmic and mass transport polarization. A segmented cell approach can be used to obtain in-situ information on flow behaviour, through the local voltage or current mapping. Lateral flow of current within the thick felts in the flow battery can hamper the interpretation of the data. In this study, a new method of segmenting a conventional flow cell is introduced, which for the first time, splits up both the porous felt as well as the current collector. This dual segmentation results in higher resolution and distinct separation of voltages between flow inlet to outlet. To study the flow behavior for an undivided felt, monitoring the OCV is found to be a reliable method, instead of voltage or current mapping during charging and discharging. Our approach to segmentation is simple and applicable to any size of the cell.

AB - Uniform flow distribution through the porous electrodes in a flow battery cell is very important for reducing Ohmic and mass transport polarization. A segmented cell approach can be used to obtain in-situ information on flow behaviour, through the local voltage or current mapping. Lateral flow of current within the thick felts in the flow battery can hamper the interpretation of the data. In this study, a new method of segmenting a conventional flow cell is introduced, which for the first time, splits up both the porous felt as well as the current collector. This dual segmentation results in higher resolution and distinct separation of voltages between flow inlet to outlet. To study the flow behavior for an undivided felt, monitoring the OCV is found to be a reliable method, instead of voltage or current mapping during charging and discharging. Our approach to segmentation is simple and applicable to any size of the cell.

KW - Flow distribution

KW - Porous electrodes

KW - Segmented cell

KW - Vanadium redox flow battery

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DO - 10.1016/j.jpowsour.2017.06.039

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VL - 360

SP - 443

EP - 452

JO - Journal of Power Sources

JF - Journal of Power Sources

ER -

Study of flow behavior in all-vanadium redox flow battery using spatially resolved voltage distribution

Abstract

Bibliographical note

ASJC Scopus Subject Areas

Keywords

UN SDGs

Access to Document

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