Lithium-Sulphur Batteries For EVs Promise 5-Min Charging Time

Another day, another potentially ground-breaking EV battery technology!

According to a research paper published in Nature Nanotechnology by University of Adelaide researchers, the next-gen Lithium-Sulphur batteries for EVs can be charged in less than 5 minutes. In this type of battery construction, Sulphur cathodes are used due to high energy density and Sulphur’s abundant availability. It can find applications in electronic devices including electric vehicles, as well as power grids.

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Lithium-Sulphur Batteries For EVs

The research paper confirms that the energy density of Lithium-Sulphur batteries is around 550 Wh/kg. This is more than twice what the existing Lithium-ion batteries offer (around 150-200 Wh/kg). Hence, the range of EVs could benefit from using this type of battery exponentially. Note that high-powered Lithium-Sulphur batteries are already being used in mobile phones, laptops and electric vehicles. However, the biggest challenge is the charge-discharge time. It could range anywhere between 1 hour and 10 hours.

This is where the breakthrough has been achieved. The researchers analysed the Sulphur reduction reaction which dictates the charge-discharge rate of Lithium-Sulphur batteries. They investigated various carbon-based transition metal electrocatalysts, including iron, cobalt, nickel, copper and zinc during the SRR. The team designed a nanocomposite electrocatalyst made up of clusters of carbon material and cobalt-zinc (CoZn).

Senior Author Professor Qiao said, “When the electrocatalyst CoZn is used in lithium-sulphur batteries, the resulting battery achieves an exceptional power-to-weight ratio. Our research shows a significant advancement, enabling lithium-sulphur batteries to achieve full charge-discharge in less than 5 minutes.” This study aims to tackle the problem of these batteries’ slow charge-discharge rates for the first time ever.

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Learn Electric Cars Says

The lower-than-anticipated growth and demand for EVs call for a breakthrough technology to reinstate the trust of the masses in EVs. While there are myriad challenges associated with the mass adoption of electric cars, charging times and infrastructure are among the biggest ones. Hence, if that is resolved, the chances of people opting for EVs will surge significantly.

We know that there are potentially transformative technologies being incepted relatively frequently. As industry professionals, we wish to stay updated with all of these. We don’t know which one(s) will emerge triumphant in times to come. It goes without saying that we might see multiple technologies for various markets depending on topography, demand, infrastructure, climatic conditions and affordability.