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.

公开(公告)号：US10916782B2

公开(公告)日：2021-02-09

申请号：US16329358

申请日：2017-08-24

Applicant: RHODIA OPERATIONS

Inventor： Thierry Le Mercier ,  Marc-David Braida ,  Robin Amisse ,  Jules Valente

IPC: H01M6/16 ,  H01G11/06 ,  H01L51/44 ,  H01M10/0525 ,  H01M6/22 ,  G02F1/1523 ,  H01G9/20 ,  H01M10/0568 ,  H01M10/0569 ,  H01G11/56 ,  H01G11/60 ,  H01M10/052 ,  H01L51/42 ,  H01M10/056 ,  H01G11/54

Abstract: The present invention provides a solid-liquid electrolyte in the form of a gel which comprises an organic carbonate-based solvent, precipitated silica, at least one ionically conducting salt and optionally additives. The invention also relates to batteries containing said solid-liquid electrolyte. The solid-liquid electrolyte according to the present invention can improve the electrochemical properties of batteries and prevent electrolyte leakage thus reducing the risk of corrosion of the batteries.