Flowless Zinc-Bromine Battery

 


The (GIST) Gwangju Institute of Science and Technology has reported new findings in last month’s  Chemical Engineering Journal. Flowless zinc-bromine batteries could revolutionize the popular lithium batteries of today. 

Fossil fuels are on the way out, and renewable resources like solar and wind are taking front stage. There are still disadvantages to this green energy, mainly unstable power creation and irregular power supply. Because of this, wind and solar use energy storage systems (ESSs). 

Lithium-ion batteries are prone to fire. This is due to the electrolytes and lithium based materials being flammable. The flawless bromine battery (FLZBB) uses non flammable electrolytes. This is a new cost effective battery technology! 

The FLZBB is comprised of four simple parts, a positive electrode, a negative electrode, an electrolyte and a separation to keep electrodes separate. Unlike old zinc-bromine batteries this new generation  is held in a gel like vessel. 

Graphite Felt (GF) is often used as an electrode in many different types of redox batteries because it’s stable in acidic electrolytes. Interestingly enough, FLZBB form bromine ions within the GF positive electrode while the battery is charging. 

The major set back? It’s a doozy… The active materials in the battery can break loose and spread without cease to the negative electrode. This causes self-discharge which can harm performance and overall lifespan of the battery. 

Researchers from the Institute of Integrated Technology at Gwangju, Korea are working on a solution.  They have developed a nitrogen doped mesoporous GF electrode that is carbon coated. They hope this will assist with electrode isolation. 

This research will affect the future of batteries as we know them! 

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