公开(公告)号：US20200091536A1

公开(公告)日：2020-03-19

申请号：US16570290

申请日：2019-09-13

Applicant: UNIVERSITY OF SOUTH CAROLINA

Inventor： BRIAN C. BENICEWICZ ,  LAURA MURDOCK ,  LIHUI WANG ,  FEI HUANG ,  ANDREW PINGITORE

IPC: H01M8/1027 ,  H01M4/92 ,  H01M4/88 ,  H01M8/1032 ,  H01M8/1044 ,  H01M8/1048 ,  H01M8/1067 ,  H01M8/1081

Abstract: Disclosed are redox flow battery membranes, redox flow batteries incorporating the membranes, and methods of forming the membranes. The membranes include a polybenzimidazole gel membrane that is capable of incorporating a high liquid content without loss of structure that is formed according to a process that includes in situ hydrolysis of a polyphosphoric acid solvent. The membranes are imbibed with a redox flow battery supporting electrolyte such as sulfuric acid and can operate at very high ionic conductivities of about 100 mS/cm or greater. Redox flow batteries incorporating the PBI-based membranes can operate at high current densities of about 100 mA/cm2 or greater.

公开(公告)号：US20240182656A1

公开(公告)日：2024-06-06

申请号：US18535450

申请日：2023-12-11

Applicant: UNIVERSITY OF SOUTH CAROLINA

Inventor： LAURA A. MURDOCK ,  LIHUI WANG ,  FEI HUANG ,  BRIAN C. BENICEWICZ

IPC: C08J5/22 ,  B01D67/00

CPC classification number: C08J5/2256 ,  B01D67/0011 ,  B01D67/0013 ,  B01D67/0093 ,  B01D2323/30 ,  B01D2323/40 ,  B01D2325/02 ,  B01D2325/42 ,  C08J2379/04

Abstract: A novel process for making PBI films starting from gel PBI membranes polymerized and cast in the PPA process wherein acid-imbibed gel PBIs are neutralized in a series of water baths and undergo controlled drying in association with a substrate material, yielding a PBI film without the use of organic solvents.

公开(公告)号：US20230323550A1

公开(公告)日：2023-10-12

申请号：US18023070

申请日：2021-09-02

Applicant: UNIVERSITY OF SOUTH CAROLINA

Inventor： BENJAMIN MEEKINS ,  SIRIVATCH SHIMPALEE ,  LAURA A. MURDOCK ,  KRIS LIKIT-ANURAK ,  BRIAN C. BENICEWICZ

IPC: C25B13/08 ,  C25B1/26 ,  C25B1/24

CPC classification number: C25B13/08 ,  C25B1/26 ,  C25B1/24

Abstract: Described herein are proton exchange membrane style electrolyzers, and methods of making same, with a polybenzimidazole (PBI) or sulfonated polybenzimidazole (s-PBI) membrane and metal catalysts on the anode and cathode, which enables both acid independent membrane resistance and lower membrane resistance with higher operating temperatures.

公开(公告)号：US20220258131A1

公开(公告)日：2022-08-18

申请号：US17617113

申请日：2020-04-07

Applicant: UNIVERSITY OF SOUTH CAROLINA ,  COLUMBIA UNIVERSITY

Inventor： BRIAN C. BENICEWICZ ,  YUCHENG HUANG ,  CONNOR R. BILCHAK ,  SANAT K. KUMAR

IPC: B01J20/28 ,  C08F292/00 ,  B01J20/26 ,  B01J20/30 ,  B01D71/78 ,  B01D69/02 ,  B01D69/10 ,  B01D69/14 ,  B01D69/08 ,  B01D63/10 ,  B01D67/00 ,  B01D53/22 ,  B01D71/40 ,  B01D71/02

Abstract: Gas separation membranes as may be used in separating gaseous materials from one another and methods of forming the membranes are described. The separation membranes include polymer-grafted nanoparticles (GNPs) as a platform and a relatively small amount of free polymer. The free polymer and the polymer grafted to the nanoparticles have the same chemical structure and similar number average molecular weights. The gas separation membranes can exhibit high ideal selectivity and can be used in a variety of applications, such as carbon capture.

公开(公告)号：US20220367897A1

公开(公告)日：2022-11-17

申请号：US17686631

申请日：2022-03-04

Applicant: UNIVERSITY OF SOUTH CAROLINA

Inventor： BRIAN C. BENICEWICZ ,  LAURA MURDOCK ,  LIHUI WANG ,  FEI HUANG ,  ANDREW PINGITORE

IPC: H01M8/1027 ,  H01M4/92 ,  H01M4/88 ,  H01M8/1032 ,  H01M8/1048 ,  H01M8/1067 ,  H01M8/1081 ,  H01M8/1044

Abstract: Disclosed are redox flow battery membranes, redox flow batteries incorporating the membranes, and methods of forming the membranes. The membranes include a polybenzimidazole gel membrane that is capable of incorporating a high liquid content without loss of structure that is formed according to a process that includes in situ hydrolysis of a polyphosphoric acid solvent. The membranes are imbibed with a redox flow battery supporting electrolyte such as sulfuric acid and can operate at very high ionic conductivities of about 100 mS/cm or greater. Redox flow batteries incorporating the PBI-based membranes can operate at high current densities of about 100 mA/cm2 or greater.

公开(公告)号：US20220064391A1

公开(公告)日：2022-03-03

申请号：US17522160

申请日：2021-11-09

Applicant: UNIVERSITY OF SOUTH CAROLINA

Inventor： LAURA A. MURDOCK ,  LIHUI WANG ,  FEI HUANG ,  BRIAN C. BENICEWICZ

IPC: C08J5/22 ,  B01D67/00

Abstract: A novel process for making PBI films starting from gel PBI membranes polymerized and casted in the PPA process wherein acid-imbibed gel PBIs are neutralized in a series of water baths and undergo controlled drying in association with a substrate material, yielding a PBI film without the use of organic solvents.

公开(公告)号：US20200091539A1

公开(公告)日：2020-03-19

申请号：US16570253

申请日：2019-09-13

Applicant: UNIVERSITY OF SOUTH CAROLINA

Inventor： BRIAN C. BENICEWICZ ,  LAURA MURDOCK ,  LIHUI WANG ,  FEI HUANG ,  ANDREW PINGITORE

IPC: H01M8/18 ,  H01M8/1032 ,  H01M8/1027 ,  H01M8/1044 ,  H01M8/1067 ,  H01M8/1081

Abstract: Disclosed are redox flow battery membranes, redox flow batteries incorporating the membranes, and methods of forming the membranes. The membranes include a densified polybenzimidazole gel membrane that is capable of incorporating a high liquid content without loss of structure that is formed according to a process that includes in situ hydrolysis of a polyphosphoric acid solvent followed by densification of the gel membrane. The densified membranes are then imbibed with a redox flow battery supporting electrolyte such as sulfuric acid and can operate at very high ionic conductivities of about 50 mS/cm or greater and with low permeability of redox couple ions, e.g. vanadium ions, of about 10−7 cm2/s or less. Redox flow batteries incorporating the membranes can operate at current densities of about 50 mA/cm2 or greater.