Effect of phosphoric acid additive on the electrolyte of all-vanadium flow batteries

A phosphoric acid additive with an optimal concentration of 0.1 M can vastly promote the diffusion kinetics of the redox reaction between V( iv ) and V( v ) without a significant decline in energy efficiency for 300 cycles, and maintain the high-temperature stability (55 °C) of an electrolyte at a h...

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Bibliographic Details
Published in:Chemical communications (Cambridge, England) England), 2024-03, Vol.6 (21), p.296-299
Main Authors: Wu, Xuewen, Liao, Jingjing, Yin, Xingrong, Liu, Jun, Wu, Saixiang, Wu, Xiongwei, Xie, Zhiyong, Ling, Wei
Format: Article
Language:English
Subjects:
High temperature
Phosphoric acid
Rechargeable batteries
Redox reactions
State of charge
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Summary:A phosphoric acid additive with an optimal concentration of 0.1 M can vastly promote the diffusion kinetics of the redox reaction between V( iv ) and V( v ) without a significant decline in energy efficiency for 300 cycles, and maintain the high-temperature stability (55 °C) of an electrolyte at a high state of charge (SOC) of 70% over the course of 30 days. A phosphoric acid additive with an optimal concentration of 0.1 M can maintain the high-temperature stability (55 °C) of an electrolyte at a high state of charge (SOC) of 70% over the course of 30 days.
ISSN:1359-7345
1364-548X
DOI:10.1039/d3cc06298h