| 摘要 |
Disclosed is a purification system for removing hydrogen fluoride and water from an electrolytic solution for lithium-ion secondary cells, the system comprising a purifier for hydrogen fluoride removal that has, held therein, a hydrogen fluoride adsorbent selected from carbonate-form hydrotalcites or fired hydrotalcites and a purifier for water removal that has a water adsorbent held therein, the former and latter purifiers having been connected in this order toward the downstream side. |
