Redox flow Li-S battery
Nowadays although Li-ion batteries dominate the
portable electronics market, they can’t satisfy the need for
electronic vehicles due to their low energy density and high cost.
Having a high theoretical specific capacity of 1672 mAh/g, sulfur is
considered as a promising cathode material for next generation
lithium batteries.
Although promising, Li-S battery have some
barriers like volume change, “shuttle effect”, insulation, et al.
All of these results in rapid capacity decay and bad cycle
performance of Li-S batteries. In our project, we are trying to
design the Li-S battery in a new way, redox flow battery. In this
case, we could utilize the soluble redox couples with proper redox
potential range to run this flow system.
![](images/YangLiuqing-RFLB.jpg)
Figure 1. Experimental RFLB system
Related research:
[1] Q. Huang, H. Li, M. Gratzel, Q. Wang, Reversible chemical
delithiation/lithiation of LiFePO4: towards a redox flow lithium-ion
battery, Physical chemistry chemical physics : 15 (2013)
1793-1797.