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Quantum battery can recharge electric car in 90 seconds, researchers reveal

Posted on March 25, 2022 by dishanth

A new type of battery charging technology could reduce the charge times of electric vehicles from hours to minutes, researchers claim.

Calculations made by scientists at the Institute for Basic Science in South Korea revealed that so-called quantum batteries would reduce typical home charging times of electric cars from 10 hours to just three minutes.

“The source of this quantum speedup lies in the use of entangling operations, in which the cells are charged collectively as a whole,” the researchers noted in their study, published this week in the physics journal Physical Review Letters.

“In contrast, classical batteries are charged in parallel, meaning that each cell is charged independently of each other.”

Quantum charging would cut charge times at charging stations from 30 mins to 90 seconds (Institute for Basic Science)

The extraordinary properties of quantum technologies have seen billions of dollars poured into adjacent fields like quantum computing and quantum cryptography, though quantum batteries remain relatively unexplored in terms of practical applications.

Earlier this year, researchers demonstrated a proof-of-concept device that used lasers to charge a quantum battery.

More development is needed before a fully functioning quantum battery prototype can be built, which scientists hope will usher in a new era of ultra-efficient batteries for use in electric vehicles and electronic devices.

It is hoped that the latest findings will incentivise funding agencies and businesses to invest in quantum charging and quantum battery technologies, which the researchers claim could “completely revolutionise” the way we use energy.

Source Independent

Quantum battery breakthrough paves way for revolution in energy storage

Posted on January 20, 2022 by dishanth

Researchers have made significant progress towards making quantum batteries a reality after demonstrating a new proof-of-concept device.

The next-generation battery technology has the potential to revolutionise energy storage by making use of a phenomenon known as superabsorption.

This process involves a quantum mechanical principle relating to a molecule’s ability to absorb light, requiring less charging time the more they become entwined.

This means that it is theoretically possible for the charging power of a quantum battery to increase faster than the size of the battery. Superabsorption therefore means the bigger the battery, the faster it charges.

Until now, however, it has not been possible to demonstrate the effect on a large enough scale to make a quantum battery.

In a new study, published in the journal Science Advances, researchers at the University of Adelaide in Australia were finally able to prove the concept of superabsorption by building several wafer-like microcavities, filling them with organic molecules, and charging them with a laser.

“As the microcavity size increased and the number of molecules increased, the charging time decreased,” said Dr James Quach, a scientist at the Institute for Photonics and Advanced Sensing at the University of Adelaide.

“This is a significant breakthrough, and marks a major milestone in the development of the quantum battery.”

The next step is to now develop a fully functioning quantum battery prototype, with the hope of ushering in a new era of ultra-efficient batteries for use in electric vehicles and electronic devices.

The way quantum batteries operate means they could potentially harvest and store light energy simultaneously, providing significant cost reductions compared to conventional solar technologies.

“The concepts that Dr Quach and his team have worked on opens up the possibility of a new class of compact and powerful energy storing devices,” said Professor Peter Veitch, head of the University of Adelaide’s School of Physical Sciences.

Source Independent