Effects of operating temperature on the performance of vanadium redox flow batteries

C. Zhang; T. S. Zhao; Q. Xu; Liang An; G. Zhao

doi:10.1016/j.apenergy.2015.06.002

Effects of operating temperature on the performance of vanadium redox flow batteries

C. Zhang, T. S. Zhao, Q. Xu, Liang An, G. Zhao

Research output: Journal article publication › Journal article › Academic research › peer-review

144 Citations (Scopus)

Abstract

For an operating flow battery system, how the battery's performance varies with ambient temperatures is of practical interest. To gain an understanding of the general thermal behavior of vanadium redox flow batteries (VRFBs), we devised and tested a laboratory-scale single VRFB by varying the operating temperature. The voltage efficiency of the VRFB is found to increase from 86.5% to 90.5% at 40mA/cm2when the operating temperature is increased from 15°C to 55°C. The peak discharge power density is also observed to increase from 259.5mW/cm2to 349.8mW/cm2at the same temperature increment. The temperature increase, however, leads to a slight decrease in the coulombic efficiency from 96.2% to 93.7% at the same temperature increments. In addition, the capacity degradation rate is found to be higher at higher temperatures.

Original language	English
Pages (from-to)	349-353
Number of pages	5
Journal	Applied Energy
Volume	155
DOIs	https://doi.org/10.1016/j.apenergy.2015.06.002
Publication status	Published - 1 Oct 2015
Externally published	Yes

Keywords

Capacity degradation
Coulombic efficiency
Operating temperature
Vanadium redox flow battery
Voltage efficiency

ASJC Scopus subject areas

Building and Construction
General Energy
Mechanical Engineering
Management, Monitoring, Policy and Law

More information

10.1016/j.apenergy.2015.06.002

Cite this

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title = "Effects of operating temperature on the performance of vanadium redox flow batteries",

abstract = "For an operating flow battery system, how the battery's performance varies with ambient temperatures is of practical interest. To gain an understanding of the general thermal behavior of vanadium redox flow batteries (VRFBs), we devised and tested a laboratory-scale single VRFB by varying the operating temperature. The voltage efficiency of the VRFB is found to increase from 86.5% to 90.5% at 40mA/cm2when the operating temperature is increased from 15°C to 55°C. The peak discharge power density is also observed to increase from 259.5mW/cm2to 349.8mW/cm2at the same temperature increment. The temperature increase, however, leads to a slight decrease in the coulombic efficiency from 96.2% to 93.7% at the same temperature increments. In addition, the capacity degradation rate is found to be higher at higher temperatures.",

keywords = "Capacity degradation, Coulombic efficiency, Operating temperature, Vanadium redox flow battery, Voltage efficiency",

author = "C. Zhang and Zhao, {T. S.} and Q. Xu and Liang An and G. Zhao",

note = "The work described in this paper was fully supported by a grant from the Research Grants Council of the Hong Kong Special Administrative Region, China (Project No. 623313).",

year = "2015",

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doi = "10.1016/j.apenergy.2015.06.002",

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AU - Zhang, C.

AU - Zhao, T. S.

AU - Xu, Q.

AU - An, Liang

AU - Zhao, G.

N1 - The work described in this paper was fully supported by a grant from the Research Grants Council of the Hong Kong Special Administrative Region, China (Project No. 623313).

PY - 2015/10/1

Y1 - 2015/10/1

N2 - For an operating flow battery system, how the battery's performance varies with ambient temperatures is of practical interest. To gain an understanding of the general thermal behavior of vanadium redox flow batteries (VRFBs), we devised and tested a laboratory-scale single VRFB by varying the operating temperature. The voltage efficiency of the VRFB is found to increase from 86.5% to 90.5% at 40mA/cm2when the operating temperature is increased from 15°C to 55°C. The peak discharge power density is also observed to increase from 259.5mW/cm2to 349.8mW/cm2at the same temperature increment. The temperature increase, however, leads to a slight decrease in the coulombic efficiency from 96.2% to 93.7% at the same temperature increments. In addition, the capacity degradation rate is found to be higher at higher temperatures.

AB - For an operating flow battery system, how the battery's performance varies with ambient temperatures is of practical interest. To gain an understanding of the general thermal behavior of vanadium redox flow batteries (VRFBs), we devised and tested a laboratory-scale single VRFB by varying the operating temperature. The voltage efficiency of the VRFB is found to increase from 86.5% to 90.5% at 40mA/cm2when the operating temperature is increased from 15°C to 55°C. The peak discharge power density is also observed to increase from 259.5mW/cm2to 349.8mW/cm2at the same temperature increment. The temperature increase, however, leads to a slight decrease in the coulombic efficiency from 96.2% to 93.7% at the same temperature increments. In addition, the capacity degradation rate is found to be higher at higher temperatures.

KW - Capacity degradation

KW - Coulombic efficiency

KW - Operating temperature

KW - Vanadium redox flow battery

KW - Voltage efficiency

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U2 - 10.1016/j.apenergy.2015.06.002

DO - 10.1016/j.apenergy.2015.06.002

M3 - Journal article

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VL - 155

SP - 349

EP - 353

JO - Applied Energy

JF - Applied Energy

ER -

Effects of operating temperature on the performance of vanadium redox flow batteries

Abstract

Keywords

ASJC Scopus subject areas

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