A new lead single flow battery in a composite perchloric acid system with high specific surface capacity for large-scale energy storage

摘要

AbstractIn this paper, we propose a full lead single flow battery with ultra-high specific surface capacity, which is achieved by the combined effects of electrochemically deposited lead as a negative electrode, electrodeposited PbO2on Pt-plated titanium (Pt/Ti) plate as a positive electrode, and the composite perchloric acid with additives as an electrolyte. Experimental results indicate that this newly developed single flow battery provides a specific surface capacity of 125?mAh?cm?2, five times higher than that of the traditional lead single flow batteries using methanesulfonic acid or fluoroboric acid. The new lead single flow battery shows a good cycling performance with an average capacity efficiency of 95% and an energy efficiency of 85% after 500?cycles.]]>