A combined research by the Indian Institute of Technology (IIT) Bombay and Shiv Nadar University claims that they have developed a prototype to produce environment friendly Lithium-Sulfur (Li-S) batteries, which takes energy efficiency to a new level – as big as three times of the commonly used Lithium-ion batteries.  

The recent years have witnessed a sky rocketing adoption of Lithium-Ion batteries, driven by the mobile phone revolution as well as the emergence of Drones, and Electric Vehicles. Conventionally, in a Lithium-Ion battery, the electrolyte carries positively charged lithium ions from the anode to the cathode and vice versa. This movement is what creates a free electrons in the anode and eventually a charge at the positive current collector.

The research teams claims an alternative to this mechanism by introducing Sulfur. The team proclaims that the Li-S battery technology leverages the green chemistry principles. They said to have combined the petroleum industry by-products (Sulfur), agro-waste elements and copolymers such as cardanol (a by-product of cashew nut processing) and eugenol (clove oil) as cathodic materials.

Commenting on the occasion, Bimlesh Lochab, Associate Professor at Shiv Nadar University, said, “The research focusses on principles of green chemistry to find a solution that addresses requirements of industries and the environment, simultaneously. The capability of three times more energy density, coupled with being a significantly safer technology, holds the promise of accelerating the adoption of clean, battery-led energy across multiple domains.”

She adjoined, “For example, an electric car with a 400 km range using conventional Lithium-ion batteries can now quadruple its range to 1600 km on a single charge with this technology, while being compact in size and much safer to use than traditional Lithium-ion batteries. To put this in perspective, it could mean driving from Delhi to Mumbai on a single charge and still being left with power.”

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