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World-Record Battery Performance

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SLAC and Stanford scientists have set a world record for energy storage, using a clever “yolk-shell” design to store five times more energy in the sulfur cathode of a rechargeable lithium-ion battery than is possible with today’s commercial technology. Application: electronics and electric vehicles. Cui’s innovation is a cathode made of nanoparticles. After 1,000 charge/discharge cycles, the yolk-shell sulfur cathode had retained about 70 percent of its energy-storage capacity. The group’s next step is to combine the yolk-shell sulfur cathode with a yolk-shell silicon anode to see if together they produce a high-energy, long-lasting battery.

[slac.stanford.edu]

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