Journal of Fundamentals of Renewable Energy and Applications
Open Access

An overview on redox flow battery chemistry

International Conference on Battery and Fuel Cell Technology

December 08-09, 2016 Dubai, UAE

Belabbes Merzougui

Hamad Bin Khalif University, Qatar

Posters & Accepted Abstracts: J Fundam Renewable Energy App

Abstract :

All-liquid flow batteries are suited for large-scale multi-hour applications because of the flexibility in decoupling of power and energy. Storing energy in the form of chemical redox in external tank makes the battery flow as the only electrochemical system that can be cost attractive for bulk energy storage. There are three types of flow batteries; the first one is based on simple soluble redox systems, such as V and Zn. The second generation is based on coordination compounds. This type is known as â�?�?coordination chemistry flow battery (CCFB)â�?. And the third one is a hybrid between the solid-state battery and the liquid flow battery. This type relies on flowable electrode (slurry electrode) and is currently emerging as â�?�?semi-solid flow batteryâ�?. All these systems can store and release electricity (duration depends on size of tank) almost instantly and have a high cycle efficiency. Most of the redox flow batteries are still not fully penetrated in the market due to high cost (total cost >$400/KWh) and large foot print as result of low volumetric energy density (20-30W/L). To improve the energy density and lower the cost, many research groups are focusing on chemistry of redox, electrolyte and electrode. In this talk, an overview on chemistry of redox flow battery will be presented and discussed. We will, in particular, shed light on challenges and opportunities in V-redox flow battery focusing more on electrochemical behavior of redox and electrode.

Biography :

Email: bmerzougui@qf.org.qa