Scientists built a quantum battery that breaks the rules of charging

Unlike conventional batteries that depend on chemical reactions, quantum batteries rely on the unusual principles of quantum physics. They use effects such as superposition and interactions between light and electrons, which could allow for much faster charging and greater energy storage capacity.

Although practical quantum batteries are not yet available, advances like this suggest they could eventually reshape how energy is stored and delivered.

The research was led by CSIRO -- Australia's national science agency -- in collaboration with RMIT University and the University of Melbourne. The findings were published on March 13 in Light: Science & Applications.

Quantum Batteries Get Faster as They Grow

Study co-author and RMIT PhD candidate Daniel Tibben said the team uncovered a surprising advantage.

"Our study found quantum batteries charge faster as they get larger, which is not how today's batteries work," Tibben said.

"It's a sign that quantum batteries could one day outperform conventional energy-storage technologies."

This behavior contrasts sharply with traditional batteries, which do not gain efficiency as they increase in size. The discovery highlights a potential path toward more powerful and efficient energy systems.

A Working Prototype Demonstrates Key Functions

Co-author Daniel Gómez, an RMIT Professor of Chemical Physics, explained that the device marks a major milestone.

"We demonstrated a device that can be charged, store that energy and then discharge it," Gómez said.

"This is an exciting development in a rapidly growing interdisciplinary field.

"Hopefully quantum batteries will soon no longer be a theoretical idea but something than can be built in the lab."

Quantum batteries operate using core principles of quantum mechanics, including superposition and entanglement, rather than the chemical processes used in today's batteries.

The prototype itself is a small layered organic device. It can be charged wirelessly using a laser, showing how energy could be delivered without direct physical connections.

Laser Charging and Future Energy Possibilities

Lead author Dr. James Quach, a CSIRO Science Leader, said the work points toward a new kind of energy future.

"Our proof-of-concept device showcases rapid, scalable charging and energy storage at room temperature, laying the groundwork for next-gen energy solutions," he said.

"While there's still much work to be done in quantum battery research, we've made an important move towards realizing the possibilities.

"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."

Moving Toward Real-World Applications

The team is now working to extend how long quantum batteries can hold their charge. Improving energy storage time will be critical for making the technology practical and commercially viable.

While still in the early stages, this breakthrough suggests that quantum batteries could one day deliver faster charging, wireless energy transfer, and performance that surpasses today's battery technologies.