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Titanium emerges as a vanadium alternative for redox flow batteries
A Japanese-Chinese team developed a titanium molten salt redox-flow battery using abundant titanium ions and molten salt electrolytes to enable high-voltage, fast, and stable grid-scale energy storage. The system demonstrates high efficiency of over 97%, strong cycling stability, and improved cost and scalability compared to vanadium-based batteries, with further optimization underway.
Spain completes testing of Europe’s largest research vanadium BESS
Spain’s Fundación Ciudad de la Energía (Ciuden), a government energy research foundation, has completed operational testing of a 1 MW/8 MWh vanadium redox flow battery (VRFB) system at its Cubillos del Sil technology center, which it says is the largest vanadium flow battery in Europe dedicated to applied research.
New cost-saving copper welding technique for battery cells revealed by Fraunhofer
Resistance projection welding technique could unlock cost-effective copper interconnection potential. Described as a major opportunity for German battery manufacturers, the new approach to copper interconnections will now be used in commercial production.
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Energy Vault inks deal to use batteries to store excess nuclear energy
Under the new partnership, the Californian company will provide its B-Vault battery energy storage systems (BESS) to back NuSun mini reactors at data centers. It will also provide its VaultOS energy management system and even draw on its gravity energy storage R&D to help in the composition of the reactor containment structures.
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Sodium-ion batteries face uphill struggle to beat lithium-ion on cost
A new Stanford University study finds that there are several several key routes that sodium-ion battery developers can take to compete on price, specifically against a low-cost variant of the lithium-ion battery known as lithium iron phosphate (LFP).
Microvast reveals all-solid-state battery tech with operational voltage of 12-21 V
Microvast says its new True all-solid-state battery (ASSB) eliminates liquid electrolytes to achieve voltages of 12 V to 21 V, with a bipolar stacking design that cuts interconnections between cells, modules, and packs.
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Storing photovoltaic-thermal energy with volcanic tuff stones
Scientists in China have used ground heat exchangers based on volcanic tuff stones to improve storage capabilities and efficiency of photovoltaic-thermal systems. Their experiments showed that the proposed combination effectively improves PV module cooling and thermal efficiency.
Offshore virtual power plant features battery and compressed air energy storage
The proposed virtual power plant (VPP) integrates a platform-to-ship (P2S) setup to electrify anchored and bunkering ships while generating grid electricity. Battery and compressed-air systems would operate alongside floating PV and wind generators.
Australian redox flow water-based battery developer lands state grant
Allegro Energy has secured a AUD 2.1 million ($1.3 million) grant from the New South Wales state government to develop an Australian-made, aqueous-based redox flow battery energy storage prototype capable of storing energy for more than 10 hours.
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