Good news!
"Australian researchers have created the world’s first proof-of-concept quantum battery, opening research into a new generation of energy storage devices.
Quantum batteries don’t yet exist. They would store and discharge energy but unlike current batteries they wouldn’t be based on chemical reactions. Quantum batteries, instead, use principles like quantum superposition and entanglement to store and discharge energy between discrete energy states in subcells within the battery.
These devices would not be subject to chemical and thermal wear and promise incredibly fast charging times which gets even faster as the quantum batteries get bigger.
A major issue with current quantum battery designs, however, is that they discharge within nanoseconds. ...
“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,” says senior author James Quach who leads quantum science and technologies science research at CSIRO. ..."
"... “Our findings confirm a fundamental quantum effect that's completely counterintuitive: quantum batteries charge faster as they get larger.” ..."
From the abstract:
"Superextensivity, where the response of a physical system scales super-linearly with size, originates from collective quantum effects and provides a promising route to augment next-generation quantum technologies.
While recent work has demonstrated superextensive behaviour in the coherent dynamics of quantum systems, these effects typically occur on short timescales, prohibiting their practical utility.
In contrast, triggering steady-state superextensive effects in, for example, a generated electric current, remains unexplored despite the immediate impact on photovoltaic technologies.
Here, we utilise a microcavity quantum battery as an experimental platform that superextensively captures light energy and converts it to an electric current via the incorporation of charge transport layers into the resonant microcavity. This architecture enables, for the first time, a complete quantum battery charge-discharge cycle.
We demonstrate that strong light–matter coupling induced by the microcavity leads to superextensive scaling of the steady-state electrical discharging power under low-intensity, incoherent illumination.
Our results provide the first experimental demonstration of superextensive light-to-charge conversion in steady-state, highlighting the feasibility of leveraging strong light–matter coupling for enhanced energy harvesting under low-light conditions."
Australian scientists achieve energy storage and quantum battery breakthrough (original news release) "Researchers develop the first quantum battery that could pave the way for long- distance charging of devices and super-fast charging of electric cars."
Superextensive electrical power from a quantum battery (open access)
Fig. 1: Composition of the quantum battery tuned for strong light–matter coupling.
Fig. 2: Superextensive charging dynamics.
CSIRO’s clean lab for engineering prototype quantum batteries
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