Researchers at the Indian Institute of Technology (IIT) in Bombay and Shiv Nadar University say they have developed technology for the production of environmentally friendly lithium-sulfur (Li-S) batteries that will be three times more energy efficient and cost effective than lithium ion. batteries commonly used today.
According to the team, Li-S battery technology is based on the principles of green chemistry, integrating the use of petroleum industry by-products (sulfur), agro-waste elements and copolymers such as as cardanol (a by-product of cashew processing) and eugenol (clove oil) as cathode materials.
Researchers said the technology has the potential to help multibillion-dollar industries, including tech News, drones, electric vehicles (EVs) and several others that rely on these batteries.
“Research is focused on the principles of green chemistry to find a solution that meets the demands of industries and the environment, simultaneously. The ability of three times the energy density, coupled with significantly safer technology, promises to accelerate adoption of, ”said Bimlesh Lochab, associate professor at Shiv Nadar University.
“For example, an electric car with a range of 400 km using conventional lithium-ion batteries can now quadruple its range to 1600 km on a single charge thanks to this technology, while being compact and much safer to use than Traditional lithium-ion batteries. To put that in perspective, it could mean driving from Delhi to Mumbai on a single charge while still being with power, ”she added.
Ms Lochab’s team partnered with Sagar Mitra, Professor at IIT Bombay in the Department of Energy Science and Engineering, to use the research for the development of a Li-S battery prototype. .
“From our laptops, cell phones and smartwatches to even electric cars depend on it. They are not efficient in terms of energy storage, they are heavy, expensive, extremely difficult to recycle and also prone to combustion. The research innovatively used eugenol (derived from clove oil), which is also environmentally sustainable, halogen-free, flame retardant, and reduced combustible propensities, making the battery remarkably safe to use, ”said Mr. Mitra.
The new battery technology synthesizes a molecule of biological origin, capable of production on a commercial scale. The research includes a new type of cathode for Li-S batteries, which can help push promising battery technology to higher levels of performance.
“The use of cardanol for sulfur-based structures as an unconventional application for creating cathode materials in this next-generation Li-S battery technology has resulted in better capacity retention (among the highest reported charge) and longer battery life in a significantly smaller battery unit. The sulfur in the battery comes from industrial waste and the cardanol comes from a bio-renewable raw material that is readily available, non-toxic and environmentally friendly, ”added Mr. Mitra.
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