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Home | Sangareddy | Iit Hyderabad Researchers Develop Alternative To Conventional Lithium Ion Batteries

IIT-Hyderabad researchers develop alternative to conventional Lithium-ion batteries

By Telangana Today
Published: Published Date - 05:31 PM, Mon - 5 April 21
This new model sets aside the requirement of toxic, costly, and heavy transitional metals.

Sangareddy: Electrochemical Energy Storage (EES) Lab at Indian Institute of Technology-Hyderabad (IIT-H), under the supervision of Dr Surendra Kumar Martha, Associate Professor at Department of Chemistry, has developed a 5V Dual Carbon Battery utilising self-standing carbon fiber mats as both electrodes (cathode and anode). This new model sets aside the requirement of toxic, costly, and heavy transitional metals.

Energy economy based on renewable sources has been put forward as a way out to shrug off the dependence on fossil fuel. Rechargeable Lithium-ion batteries (LIBs) are projected to meet future electric mobility, electric aviation, and stationary grid energy storage targets before 2030. However, LIBs need toxic and costly metals like cobalt, nickel, manganese and others for functioning. Geologically unsymmetrical distribution of Lithium and cobalt along with geopolitics and unethical child labor centered on mining causes havoc fluctuations in raw material cost. It affects the market price stability of large LIB packs used in electric vehicles. In the dual-carbon battery, both the electrodes consist of carbonaceous materials, and the ions from the electrolyte intercalate and de-intercalate into the electrode matrix.

The novel dual carbon battery consisting of zero transition metal is environmentally friendly. It may cut down the overall battery cost by 20 to 25 per cent and is expected to curb the unpredictability in market price. The use of ubiquitous carbon as electrode active material as well as current collector replacing heavy metals brings in the aspects of lightness and flexibility. The fabricated 5.0 voltage (nominal voltage 4.6 V) cell provides an energy density of 100-watt hour per kilogram approximately and can be extended up to 150-watt hour per kilogram with further modifications. The research team believes that developed cells may find potential uses in high voltage applications, sophisticated battery-run medical devices, regenerative braking systems in electric vehicles, and stationary grids.

The leader of the investigation team, Dr Surendra Kumar Martha said, “The study will be extrapolated to push the energy density limits further, and their broad vision includes introducing the dual carbon system as a cheaper LIB alternative to the Indian Market.”

The research was carried out by Shuvajit Ghosh and Udita Bhattacharjee, Research scholars at IIT-H, under the supervision of Dr Surendra K Martha, in collaboration with Oak Ridge National Laboratory (USA) and Naval Materials Research Laboratory (Mumbai, India). The Naval Research Board (DRDO) supported this project.

 


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