"It's the first prototype which does a full cycle of a battery: in other words, you charge it, you store energy, and you can discharge it. In conventional batteries, charge time increases with size. That's why your mobile phone takes about 30 minutes to charge and your electric car takes overnight to charge."
"In contrast, quantum batteries have this really peculiar property where the larger they are, the less time they take to charge. That's due to a feature known as collective effects, in which quantum cells charge faster when there are more cells involved."
"The new prototype, detailed in the journal Light: Science & Applications, took femtoseconds (quadrillionths of a second) to charge, and stored the energy for nanoseconds—about six orders of magnitudes longer. To put that into perspective, for a battery that took one minute to charge, six orders of magnitude would mean it would stay charged for a couple of years."
Australian researchers at CSIRO have developed the world's first proof-of-concept quantum battery prototype, marking a significant advancement in quantum energy storage technology. Unlike conventional batteries where charging time increases with size, quantum batteries exhibit the opposite property: larger batteries charge faster due to collective quantum effects where multiple quantum cells accelerate charging. The new prototype charges in femtoseconds using wireless laser technology and stores energy for nanoseconds—approximately six orders of magnitude longer than charging time. While the current prototype has minimal capacity insufficient for practical applications, it represents the first complete battery cycle demonstration with functional energy extraction. Future development requires extending storage duration to make quantum batteries viable for real-world use.
Read at www.theguardian.com
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