Recovery of LiCoO and graphite from spent lithium-ion batteries by molten-salt electrolysis.

The recovery of spent lithium-ion batteries has not only economic value but also ecological benefits. In this paper, molten-salt electrolysis was employed to recover spent LiCoO batteries, in which NaCl-NaCO melts were used as the electrolyte, the graphite rod and the mixtures of the spent LiCoO cathode and anode were used as the anode and cathode, respectively. During the electrolysis, the LiCoO was electrochemically reduced to Co, and Li and O entered into the molten salt.

Impacts of daily intakes on the isomeric profiles of perfluoroalkyl substances (PFASs) in human serum.

Perfluoroalkyl substances (PFASs) have been well studied in human daily intake for assessment of potential health risks. However, little is known about the isomeric compositions of PFASs in daily intake and their impacts on isomeric profiles in humans. In this study, we investigated the occurrence of PFASs with isomeric analysis in various human exposure matrices including foodstuffs, tap water and indoor dust.