Renewable energy sources, like solar and wind power, are among the central topics of our times with the issues of energy crisis and environment pollution. However, the random nature of these intermittent renewable energy sources (change with synoptic conditions, diurnal variation, etc.) makes it quite challenging for its utilization and dispatch through the grid. One of effective solutions is to connect the power station and the grid using electrochemical energy storage techniques.
Vanadium flow battery (VFB), one kind of electrochemical energy storage techniques, is rather suitable for this application due to its features like long life time, active thermal management as well as the independence of energy and power ratings. Dalian Institute of Chemical and Physics (DICP) has devoted to VFB research for more than 10 years from materials to system integration, where the VFB stacks with power rating from 5 W to 32 kW were successfully developed. To further accelerate the commercialization of VFBs, a spin-off company (Rongke power Co.Ltd) was established in 2008, after which different demonstrations of VFBs in different application field were carried out. In 2012, a world largest 5 MW/10 MWh VFB system was successfully implemented by Ronke Power.
In this presentation, the detailed research and development of VFBs including key materials, stacks and application will be introduced. The challenge and prospect will be summarized as well.