Purifier for removing hydrogen fluoride from electrolytic solution
AssigneeEntegris, Inc.
InventorsYutaka Shimada, Yasushi Ohyashiki
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Abstract
The present invention is a purification system for removing hydrogen fluoride and water from an electrolytic solution for lithium-ion secondary batteries in which [1] a purifier for removing hydrogen fluoride containing a hydrogen fluoride adsorbent selected from among carbonate hydrotalcites and calcined hydrotalcites and [2] a purifier for removing water containing an adsorbent for trapping water are connected in this order from upstream to downstream.
Claims11
A purifying apparatus for removing hydrogen fluoride and water from an electrolytic solution for a lithium ion secondary battery, comprising a hydrogen fluoride-removing purifier containing an adsorbent for trapping hydrogen fluoride selected from carbonate hydrotalcites or calcined hydrotalcites and a water removing purifier containing an adsorbent for trapping water, said hydrogen fluoride-removing purifier and said water-removing purifier being connected to each other in this order from upstream to downstream.
Dependencies are inferred from the claim text.