1. Problem: LiPF6 — The Most Demanding Packaging Challenge in Battery Materials Lithium hexafluorophosphate (LiPF6) is the critical electrolyte salt in >95% of commercial lithium-ion batteries. It presents the most challenging packaging requirements of any battery material: (1) Extreme moisture sensitivity — LiPF6 reacts with water to produce HF gas: LiPF6 + H₂O → LiF + POF₃ + 2HF (and POF₃ further hydrolyzes: POF₃ + 3H₂O → H₃PO₄ + 3HF). Even ppm-level moisture ingress