redox-flow batteries

A research team has used a molecule known as 2,6-dihydroxy-anthraquinone (DHAQ) to improve the durability of organic aqueous redox flow batteries. They claim the molecule enables a net lifetime that is 17 times longer than past research has shown.

UK scientists have designed a new type of aqueous organic redox flow battery based on ion-exchange membranes made of a polymer of intrinsic microporosity. The battery showed a very low-capacity decay rate of 0.0335% per day for 2,100 charge-discharge cycles.

Australian redox-flow battery specialist Redflow has upped the ante on its plans to expand into the US market, announcing that it has completed testing to pave the way for its battery energy storage system to be used in conjunction with hybrid inverters manufactured by US solar engineering company Sol-Ark.

MSE international and its partners have concluded the feasibility study for an organic large-scale flow battery project in Portsmouth, England. The 650 kW/6.1 MWh project might end up having have a lower levelized cost of electricity than lithium-ion or vanadium redox flow batteries.

UK researchers have developed a stable alkaline-based hybrid polysulfide-air redox flow battery that reduces “crossover” issues via a new dual-membrane-structured flow cell.

A major Western Australian mine targeting the global vanadium battery market was this week found to be bankable, with feasibility studies confirming the project’s “strong commercial case for development,” its owner Australian Vanadium Limited said.

Australian redox flow battery manufacturer Redflow’s push into the United States market has received a major boost with the company announcing it will work with California-based biowaste technology firm Anaergia on the installation of a solar and 5.5-6MWh battery energy storage solution.

A Dutch-Danish research group has provided a proof of concept for the use of Blatter radicals in electrochemical energy-storage applications. It tested these compounds in a small electrochemical cell that was found to remain stable over 275 charge/discharge cycles.

A US-Chinese research group has developed a full chlorine membrane-free redox flow battery that is claimed to achieve a round-trip energy efficiency of 91% at 10 mA/cm2 and an energy density of 125.7 Wh/L. The device is based on an aqueous electrolyte made of sodium chloride (NaCl) which uses chlorine (Cl2/Cl−) redox couple as the active material for the positive electrode.

A Spanish consortium is equipping one of Madrid’s largest metro and bus stations with a hybrid system that combines PV, geothermal pumps, and vanadium redox flow batteries to provide cooling and heating.