According to pv magazine international.

The Dubai Electricity and Water Authority (DEWA) Research and Development Center has filed a patent for a redox flow battery. The utility says it will achieve higher power densities and lower generation costs.

“The new patent solves a major problem in the field of flow batteries,” DEWA said in a statement. “Conventional stacking of redox flow batteries have inactive spots at the edges of the cell, which impede the mass transfer of reactants to the electrode/electrolyte surface, and lead to pressure drops which adversely affect the efficiency and overall performance of the flow battery system. »

The new technology could solve this problem thanks to a better distribution of the electrolyte. The battery would be able to modulate the cell size at the input and output sections.

“Thus, the voltage drop is limited and the improvement in performance and efficiency of the battery flow system is ensured”, explain the scientists, without providing further technical details.

DEWA’s R&D center is located in the gigantic 5 GW Mohammed bin Rashid Al Maktoum Solar Park. The facility, which spans 4,400 square meters, is the largest solar testing and certification facility in the UAE.

DEWA is currently testing a 1.2 MW on-grid storage (NAS) system supplied by Japanese company NGK Insulators on the first section of the Mohammed bin Rashid Maktoum Solar Park – a 13 MW unit built by US thin-film manufacturer First Solar at the end of 2013. The authority also plans to use the output from the solar park to supply energy to a 250 MW pumped-storage hydroelectric power station. This project has just been the subject of a call for tenders in Hatta, a city located in the south-east of the emirate of Dubai. In addition and within the same solar park, DEWA has set up a green hydrogen production plant.

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