Scientists Devise Method to Upcycle Lithium-ion Batteries from Expired Solar Panels

08 Sep 2023 | Abstracted from Tech Times

"...the majority of solar cells are constructed from high-purity silicon, yet these cells are often discarded after 25 to 30 years of service...current techniques for reclaiming high-purity silicon are not only energy-intensive but also entail the use of highly toxic chemicals..[Singapore's] NTU team devised a novel extraction process utilizing phosphoric acid...method demonstrated superior recovery rates and purity compared to existing silicon retrieval technologies...sample achieved a recovery rate of 98.9 percent with a purity of 99.2 percent."

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