Sodium-ion batteries for EVs, renewables storage – pv magazine USA

US scientists have developed a new electrolyte design for sodium-ion batteries to improve their long cycling performance. The low-solvation electrolyte was designed for high-voltage sodium-ion batteries, which retained 90% of their capacity after 300 cycles. July 19, 2022 Emiliano BelliniFrom pv magazine globalScientists from the US Department of Energy’s Pacific Northwest National Laboratory (PNNL) have developed a sodium-ion battery (NIB) that can purportedly overcome the main challenge with such storage systems – the ability to hold a charge after repeated cycles of charging and discharging.The researchers said this issue is strictly correlated to the instability of the solid-electrolyte interphase (SEI), which is generated on the anode of lithium-ion batteries during the first few charging cycles, in order to prevent electrolyte decomposition and maintain cycling…

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