Abstract
An electrolyte of Pb(CH3SO3)2 and CH3SO3H/HBF4 mixed acids is utilized to investigate the cycling performance of soluble lead flow batteries over the range −40 °C–50 °C. The solution containing 1.0 M Pb(CH3SO3)2 + 0.4 M CH3SO3H + 1.6 M HBF4 is optimized as the electrolyte based on its freezing point, conductivity and dynamic viscosity. At low temperature, its charge transfer resistance is lower than that in Pb(CH3SO3)2 + CH3SO3H solution. The side reactions of hydrogen and oxygen evolutions are reduced that is beneficial for the electrodeposition of PbO2 and Pb. At high temperature, the hydrolysis of HBF4 could be inhibited by CH3SO3H. The corrosion current density is reduced to effectively avoid the corrosion and failure of graphite electrodes. The coulombic efficiency of cells is maintained at 87.3 %–95.1 % within the range −40 °C–50 °C. The energy efficiency is higher than 74 %. The soluble lead flow battery exhibits an excellent weatherability.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
