Polystyrene-supported neutral lithium receptor for the recovery of high-purity LiPF6 from simulated degraded electrolyte†
Abstract
An immobilized receptor selectively sequesters Li+ and PF6− from aprotic solutions. Subsequent suspension in methanol serves to trigger the release of LiPF6. The recovered LiPF6 has ≥99.5% purity and no appreciable trace metal content as determined by qNMR spectroscopy and ICP-MS analysis.