公开(公告)号：US12166236B2

公开(公告)日：2024-12-10

申请号：US17299357

申请日：2019-12-09

Applicant: RHODIA OPERATIONS

Inventor： Jules Valente ,  Brice Schlegel ,  Lionel Barriquand

IPC: H01M50/446 ,  C01B33/193 ,  H01M50/403 ,  H01M50/417

Abstract: A precipitated silica suitable for use in lead-acid battery separators having a good balance between mechanical properties and electrical resistivity. In particular, a precipitated silica characterised by a DOA oil absorption equal to or greater than 200 mL/100 g; a median aggregate size D50M equal to or lower than 8.7 μm and equal to or greater than a parameter A whose value, expressed in microns, is calculated from equation (1): A=23.3−0.076×|DOA|, wherein |DOA| represents the numerical value of the DOA oil absorption expressed in mL/100 g.