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IIT Bombay, Shiv Nadar researchers develop environment friendly,cost efficient lithium batteries

IIT Bombay, Shiv Nadar researchers develop environment friendly,cost efficient lithium batteries



NEW DELHI: Researchers at the Indian Institute of Technology (IIT) Bombay and Shiv Nadar University claim to have developed a technology for production of environment friendly Lithium-Sulfur (Li-S) batteries which will be three times more energy efficient and cost effective than Lithium-ion batteries commonly used at present.

According to the team, the Li-S battery technology leverages principles of green chemistry, incorporating usage of by-products from the petroleum industry (Sulfur), agro-waste elements and copolymers such as cardanol (a by-product of cashew nut processing) and eugenol (clove oil) as cathodic materials.

The researchers said the technology has the potential to aid multi-billion dollar industries including tech gadgets, drones, electric vehicles (EV) and several more that depend on such batteries.
"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," Bimlesh Lochab, Associate Professor at Shiv Nadar University, told PTI.

"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," she added.

Lochab's team has partnered with Sagar Mitra, IIT Bombay's Professor in the Department of Energy Science and Engineering, to use the research for the development of a Li-S battery prototype.

"From our laptops, mobile phones and smart watches to even electric cars depend on them. They are not efficient in terms of energy storage, they are heavy, expensive, extremely hard to recycle and also prone to combustion. The research innovatively used eugenol (derived from clove oil) copolymer, which is also environmentally sustainable, halogen-free, flame-retardant, and reduces the combustible propensities, making the battery remarkably safe to use," Mitra said.

The new battery technology synthesises a bio-based molecule, capable of commercial-scale production. The research includes a new type of cathode for Li-S batteries, which can help push the promising battery technology to higher performance levels.
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"The use of cardanol for Sulfur-based structures as an unconventional application to create cathode materials in this next generation Li-S battery technology has exhibited enhanced capacity retention (among the highest charge capacities reported) and longer battery life in a significantly smaller battery unit. The Sulfur for the battery is sourced from industrial waste and cardanol is sourced from bio-renewable feed-stock that is easily available, non-toxic and environmentally friendly,” Mitra added.

Why Lithium batteries are dangerous?

Heat released during cell failure can damage nearby cells, releasing more heat in a chain reaction known as a thermal runaway. The high energy density in lithium batteries makes them more susceptible to these reactions. ... In some lithium batteries, combustion can separate fluorine from lithium salts in the battery.

What lithium batteries are used for?

Rechargeable lithium batteries are well-known for powering our phones and the latest lightweight laptop computers. Lithium batteries are lighter and smaller than lead acid batteries. They also tolerate movement and temperature changes, as well as maintain their power delivery during use.





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Air India Express Flight IX-1344 from Dubai skidded off the runway in Kerala's Kozhikode.

#1 Updated: August 10, 2020 7:29 am IST

Air India Express Flight IX-1344 from Dubai skidded off the runway in Kerala's Kozhikode.

Highlights

  • Eighteen people died in Kerala and more than 150 were injured
  • All survivors, admitted to various hospitals, were also tested for Covid
  • Aviation Minister Hardeep Singh Puri visited site of accident on Saturday

Kozhikode:

When Flight IX-1344 went down at Kerala's Calicut International Airport on Friday, authorities and locals swerved into action to save as many lives as possible. NDTV has accessed a blow-by-blow account of what happened in the critical first five minutes from sources in the Central Industrial Security Force (CISF), which guards the country's airports.

At 7:40 pm when the Air India Express Boeing 737 aircraft from Dubai with 190 people skidded off the table-top runway in heavy rain and went down a 35-metre slope, the first call was made by an officer of the CISF, sources said.

Assistant Sub Inspector Ajith Singh who was present at crash gate number 08 sent the first walkie-talkie message to the CISF control room at 7:40 pm, seconds after seeing the plane go down, sources said. Crash gates at airport landing and take-off points are meant for emergency responses.


At 7:41 pm, the CISF control room called the Air Traffic Control and CISF Quick Response Team.
At 7:42 pm, the Airport Fire Station was alerted.


At 7:43 pm, the CISF called the Airport Health Department.


At 7:44 pm, the CISF control room contacted the terminal manager of the airport, airport director and made a second call to Airport Health.
At 7:45 pm, the CISF control room informs local police and the agency's unit lines.

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Within five to seven minutes of the accident, residents in the area too had reached the crash gate near which the plane went down.

Seeing the number of passengers involved, the deputy commandant of Calicut International Airport allowed a restricted number of locals inside the crash gate to help with the rescue, a timely decision, said CISF sources.


Though it was India's worst passenger aircraft accident since 2010, the number of casualties was significantly lower than the one in Mangaluru when another Air India Express flight from Dubai overshot the table-top runway and slid down a hill, killing 158 people.

Eighteen people died in Kerala and more than 150 were injured. All survivors were admitted to various hospitals and were also tested for COVID-19, authorities have said.


Civil Aviation Minister Hardeep Singh Puri visited the site of the accident on Saturday.

"It (the plane) overshot the runway while trying to land amidst what were clearly inclement weather conditions prevailing at that time," Mr Puri told a news conference, adding that it would be premature to speculate on the precise cause of the accident.

He said authorities managed to rescue most of the passengers because the plane did not catch fire while descending the slope at the end of the runway.


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Product details

Product Dimensions: 15 x 1.8 x 11 cm
Item part number: RC177
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Date first available at Amazon.in: 19 March 2020
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