A team of researchers led by Australia’s national science agency, CSIRO, has developed a working prototype of a quantum battery that breaks the fundamental constraints of conventional energy storage. The device, detailed in the journalLight: Science & Applications, uses the principles of quantum mechanics rather than chemical reactions to charge, store, and release energy.
Unlike standard lithium-ion batteries that rely on chemistry, this prototype utilizes light-electron interactions and superposition. This shift in physics allows the battery to exhibit a counterintuitive trait: it charges faster as it gets larger.
"Our study found quantum batteries charge faster as they get larger, which is not how today's batteries work," said Daniel Tibben, a PhD candidate at RMIT University and co-author of the study. "It's a sign that quantum batteries could one day outperform conventional energy-storage technologies."
A shift from chemical to quantum power
The prototype is a small, layered organic device that accepts energy wirelessly through a laser. By bypassing the need for direct physical connections, the technology offers a glimpse into a future where energy delivery could be seamless and near-instantaneous.
Daniel Gómez, a professor of chemical physics at RMIT, noted that the successful demonstration of charging and discharging the device marks a critical milestone. "Hopefully quantum batteries will soon no longer be a theoretical idea but something that can be built in the lab," Gómez said.
While the current results are promising, the research team acknowledges that the technology remains in the early stages of development. Dr. James Quach, a CSIRO Science Leader and the project's lead author, believes the work lays a necessary foundation for future energy solutions.
"My ultimate ambition is a future where we can charge electric cars much faster than fuel petrol cars, or charge devices over long distances wirelessly," Quach said.
Looking ahead, the researchers are focused on extending the amount of time the device can hold a charge. Improving this retention capacity is the next hurdle in moving the technology from the laboratory toward commercial viability. For now, the successful prototype proves that quantum mechanics can function at room temperature to manage energy storage at a scale that exceeds traditional capabilities.
