Development Course

Vanadium electrolyte is the active material in vanadium flow battery to achieve the electrochemical reaction. Vanadium is a resource-based material with about 63 million tonnes of reserves in the world, about 38% of which is in China. Only 13 million tonnes of vanadium are currently exploitable, 95% of which is in China, Russia and South Africa. We can see that the development of vanadium flow battery in China possesses unique advantages in resource. The vanadium flow battery energy storage plays an important role in vanadium-related industries,thus  the rise of this sector will stimulate China's exploitation and utilization of vanadium resources.

Based on the working principle of vanadium flow battery,  only vanadium  valence changes during the use of battery, active substance is not consumed and can theoretically recycled all the time. In the end of the battery lifetime, Rongke Power can provide electrolyte regeneration and recycling services using its own proprietary technology. Vanadium is a resource-based material whose residual value in electrolyte is up to 50% ~ 70%, the key material recycle can not only save resources, but also keep and add value to customers'  investment.
• In the 1970s, redox flow cells were first developed by NASA, which was followed by the Japanese Electronics Lab.
• In the 1980s, the University of New South Wales in Australia began the research of vanadium flow battery, and started small-scale trial production of vanadium flow battery;
• In the 1990s, the intellectual property rights spread from laboratories to industrial entities;
• In the 21st century, pilot projects are established around the world;
• In the future,  vanadium flow battery manufacturing scale-up and commerical applications will both be accelerated worldwide.

Innovation of vanadium flow battery by Rongke Power:
• In 2000, the first cell was produced;
• In 2003, the 1kw cell stack was marketed to the world;
• In 2005, the 10kw battery system was manufactured;
• In 2007, based on the 1kw cell stack, the power of battery was upgraded to 10kW;
•In 2008, a milestone was achieved in the battery system R&D, and the 100kw system was produced;
• In 2009, the 100kw cell stack was launched in the market;
•In 2010, the 260kw system was successfully applied in the project;
• In 2011, with the unremitting efforts of the staff, the first 352kw energy storage module was put into operation;
• In 2012, the 5MW/10MWh commercial demonstration system which was the world's largest energy storage system at that time was successful;
• In 2013, the 32kw cell stack with the highest power of its kind was manufactured;

• In 2015, a new generation of 250kW containerized energy storage system was formally put into operation in the project.

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