Distributed Storage

Scientists in the United States 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%.

For a small infrastructure investment in rooftop solar systems, state governments can make a material difference to the lives of social housing tenants, and further their net-zero ambitions. Western Australia reports another win-win.

Put solar in your hot water tank! Off-peak electricity rates are fast becoming an unhelpful price signal for rooftop solar owners, who benefit by self consuming their excess solar ahead of drawing electricity from the grid at any time of day.

India’s solar module makers have built a strong track record, and now the country is set to see vast battery facilities developed. Uma Gupta provides a look into ambitious manufacturing projects and the wider enabled ecosystem.

The suitability of vanadium redox flow battery technology for Australian residential and commercial applications is set to be tested with Perth-based energy storage company VSUN Energy planning to deploy three 5 kW/30 kWh flow batteries.

Scientists have demonstrated a zinc-ion battery that overcomes many of the challenges for this technology. By working with a highly-concentrated salt solution as the electrolyte, the group was able to achieve stability over more than 2,000 cycles combined with a strong electric performance. The group says that its work opens up “a viable route to developing aqueous batteries for emerging electrochemical energy storage applications.”

Scientists in the U.S. discovered a promising new battery chemistry based on chlorine and table salt. Batteries based on this chemistry can achieve at least six times the energy density of today’s lithium-ion batteries, according to the group that created it. The prototype battery could already be suitable for small devices such as hearing aids, and with further work could be scaled up to larger applications.

Australia’s solar uptake is now forecast to reach 8.9 GW by 2025, on top of the 14 GW already installed, according to the Australian Electricity Market Operator.

California-based Sakuú Corp. has started work on a 2.5 MWh per year pilot facility to produce 3D-printed solid-state battery tech.

Lithium-ion batteries remain the front-runner to power EVs, but without clearer recycling plans from the European Union and the United States, the balance isn’t yet tipped away from heavy mining of new materials to focus on supplying industry needs, writes Ian Morse.