Recovery of lead and iodine from spent perovskite solar cells in molten salt was written by Wang, Hongya;Chen, Xiang;Li, Xianyang;Qu, Jiakang;Xie, Hongwei;Gao, Shuaibo;Wang, Dihua;Yin, Huayi. And the article was included in Chemical Engineering Journal (Amsterdam, Netherlands) in 2022.Category: chlorides-buliding-blocks The following contents are mentioned in the article:
Organic-inorganic hybrid perovskite solar cells (PSCs) have received extensive attention due to their high power conversion efficiency, bright prospects for large-scale deployment, and low cost. However, the end-of-life lead (Pb)-based PSC will pose significant resource and environmental challenges. Herein, we develop an eco-friendly strategy, the molten-salt-electrolysis (MSE), to recover Pb and iodine (I2) from spent Pb-based PSC. First, lead iodide (PbI2) was dissolved in molten LiCl-KCl and then electrochem. converted into I2 at a graphite anode and Pb at the cathode. The recovery efficiency of Pb reached 97.65% with a high current efficiency of 96.87%. In addition, a high PbI2 leaching rate of ∼ 99.8% and a high PbI2 solubility of ∼ 5.97 weight% in molten LiCl-KCl at 450°C can sustain a rapid leaching and recovery process. Overall, MSE is a simple, rapid, and environmental-benign method to recover Pb-based PSCs, eliminating the Pb contamination and closing the iodine cycle. This study involved multiple reactions and reactants, such as Lithium chloride (cas: 7447-41-8Category: chlorides-buliding-blocks).
Lithium chloride (cas: 7447-41-8) belongs to organic chlorides. Organochlorines stimulate the central nervous system and cause convulsions, tremor, nausea, and mental confusion. Examples are dichlorodiphenyltrichloroethane (DDT), chlordane, lindane, endosulfan, and dieldrin. Organochlorine compounds are lipophylic, meaning they are more soluble in fat than in water. This gives them a high tenancy to accumulate in the food chain (biomagnification).Category: chlorides-buliding-blocks
Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics