Vanadium redox flow batteries with purported LCOS of $0.10/kWh
Singapore-based VFlowTech has secured funds to scale up manufacturing of its vanadium redox flow batteries. The company currently offers three modular products that can be scaled to multi-megawatt-hour systems.
High-voltage non-aqueous hybrid flow battery with novel chemistry
US scientists claim to have created a crossover-free, high-voltage, non-aqueous hybrid flow battery with a novel chemistry for the solid sodium anode. The device has shown a high working voltage of around 2.6 V and a coulombic efficiency of 95.0%.
VSUN reveals redox flow battery tech in Australia
The suitability of vanadium redox flow battery technology for Australian residential and commercial applications will soon be tested, as Perth-based storage specialist VSUN Energy plans to deploy three 5 kW/30 kWh flow batteries.
Work begins on 100 MW/500 MWh vanadium flow battery in China
The storage project is linked to a 1 GW wind and solar project portfolio, 500 MW of solar distributed generation, and the construction of a gigafactory for vanadium redox flow batteries in China.
Vanadium-manganese redox dual-flow battery to store power, generate hydrogen
Conceived by Swiss researchers, the battery shows good stability over 50 cycles, with an average energy efficiency of 68% and a water-splitting voltage efficiency of 64.1%. According to its creators, the device produces pure hydrogen that only needs to be dried and compressed for optimal storage.
Redox flow battery retains more than 90% of capacity over 6,000 cycles via new catholyte
The battery was built with a new catholyte and a symmetry-breaking strategy, which consists of changing the symmetry of the redox-active organic molecules instead of using the common approach of attaching a hydrophilic functional group.
Aussie startup invents breakthrough non-toxic battery electrolyte that’s cheaper ‘by factor of 100’
Professor Thomas Nann told pv magazine Australia that a breakthrough idea was almost too simple: “Actually when we submitted the patent in the first place, the patent officers came back to us and said ‘well, that’s too trivial’ and we made exactly that argument – why did no one else do that then?” said Nann.
China wants to test vanadium redox flow batteries
A 125 kW/500kWh storage unit will be tested by China’s National Photovoltaic and Energy Demonstration Experimental Center. The storage system will be provided by Canadian specialist VRB Energy.
Sulphur-based redox flow battery with 15 consecutive hours of runtime
Researchers from Hong Kong have applied a novel charge-reinforced, ion-selective (CRIS) membrane to a polysulfide-iodide redox flow battery they had built in 2016. The redox flow battery showed a capacity decay rate of just 0.005% per day for 1,200 cycles, and a lifetime with over 2,000 hours’ cycling, which the academics said corresponds to approximately three months.
Malaysian green hydrogen project opts for Perth-based flow batteries
Australia-based TNG Limited has signed an agreement with Malaysian green hydrogen company AGV Energy which will see its vanadium redox flow batteries integrated into the HySustain project to store solar energy for green hydrogen production.
