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Researchers from Shanghai Jiao Tong University developed a sodium-sulfur battery prototype with an energy density of 2,021 Wh/kg, rivaling lithium-ion batteries. This battery uses common materials like salt and sulfur, offers room-temperature operation, and features a non-flammable electrolyte.

The design aims to reduce dependency on lithium, cobalt, and nickel, addressing environmental and geopolitical concerns tied to their extraction. The technology is positioned as a safer, decentralized alternative for energy storage, enabling greater energy independence and resilience against monopolistic resource control.