Further offers for the topic Battery technology

Poster-No.

P5-074

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Given the growing use of Lithium-ion batteries (LIBs), the lack of available critical raw materials like e.g. Li, and Co, and recycling issues like ineffective procedures, it is currently only feasible to recover complex battery components through mechanical pre-treatment steps followed by purification via pyrometallurgical or hydrometallurgical methods. However, in mechanical processes at the crushing stage, LIBs can short-circuit if they contain excess energy and can cause explosions. There are different methods for recovery of the excess energy from batteries and one of them is discharging the batteries in a conducting aqueous medium called electrochemical discharge. Many groups have used aqueous NaCl as a discharge medium, but experiments revealed that it is a highly corrosive environment for the battery casing and produces toxic gases. Other inorganic salts have been also proposed but the casing corrosion cannot be ruled out in aqueous-based solutions additionally, the high voltage of LIBs breaks the water solvent to gaseous counterparts. We are exploring alternative discharge mediums like organic solvents with higher electrochemical windows to maintain stable electrolytes and reduce casing corrosion. The results will demonstrate whether organic solvents can effectively discharge LIBs to 0% state-of-charge (SOC). This method aims to provide a quick, safe discharge process for end-of-life LIBs, helping mitigate fire risks associated with collecting, storing, and transporting LIB waste at collection points and recycling facilities.