The main problem Ni-Zn batteries were facing was low cyclability

WE CHANGED THAT.

15 years of R&D efforts have been necessary and Sunergy has made a decisive technical contribution to this cycling resistance problem.

By introducing various additives like TiN and working on the nanostructure of the zinc electrodes, we have successfully removed :

Zinc dendrite growth

Zinc electrode shape change

Densification of Zinc

Zinc corrosion

Zinc passivation

Nickel hydroxide poisoning by Zinc oxide

CONSTANT IMPROVEMENT SINCE SEVERAL YEARS HAS BEEN ACHIEVED:

 
 

Since 2019, a new breakthrough with a patent application has been achieved thanks to our special know-how.

We have managed to limit the dry out of the cell, which means we can double its lifespan.

As can be seen in the figure below : key concepts for achieving 5000 cycles are to be validated based on the recent research work and results at SunErgy.

 
 

Number of cycles obtained for prismatic sealed Ni-Zn cells

This new rechargeable nickel zinc battery technology can be considered as a replacement for nickel-cadmium battery with extra advantages:

  • more performant

  • more environmentally friendly

  • cleaner

  • safer

  • cheaper