New Method to Produce PBI Films without using Organic Solvents

Description:

Reference #: 01429

The University of South Carolina is offering licensing opportunities for New Method to Produce PBI Films without using Organic Solvents

Background:

Polybenzimidazole Film is used in membrane electrode assemblies for fuel cells, flow batteries, and hydrogen pumps. The PBI film is a separator between a nickel mesh and carbon felt. The PBI film separates the anode and the cathode to prevent short-circuiting in the battery. The properties of this membrane will affect the battery’s performance significantly. These films are high strength and used for electrochemical cells where they will be absorbed in sulfuric or phosphoric acids. These films are made for high-temperature operation, and these films are traditionally very expensive and low-cost options are being pursued.

Invention Description:

This invention details a novel process for making PBI films without using an organic solvent. Eliminating the need for an organic solvent offers a new route to producing PBI films that is cheaper, less time-consuming, and produces less chemical waste than previous methods. The new solvent-less process also allows for a wider range of PBI chemistries to be made into a film. This will preserve the performance of batteries while reducing cost, all while being more environmentally friendly.

Potential Applications:

Chemically resistant and thermally stable PBI films are synthesized for the first time without an organic solvent. Previously, the synthesis of PBI films has been an expensive and time-consuming process that involves harsh chemicals. The current invention disclosed is a process that does not require the use of an organic solvent, thereby making it a greener process. By overcoming the need for an organic solvent, the process of making PBI films is cheaper and less time consuming

Advantages and Benefits:

PBI films are produced without an organic solvent which lowers the associated expense of purchasing the solvent and disposal of the hazardous waste produced from using the solvent. The process of obtaining a PBI film is thus simplified and a wider range of PBI chemistries can be used.

Patent Information:
Title App Type Country Serial No. Patent No. File Date Issued Date Expire Date Patent Status
Method for Producing PBI Films Without Organic Solvents Nationalized PCT European 19838983.5   9/13/2019     Filed
Method for Producing PBI Films Without Organic Solvents Nationalized PCT China 201980057871.8   9/13/2019   9/12/2039 Expired
Method For Producing PBI Films Without Organic Solvents Utility United States 16/569,983 11,180,621 9/13/2019 11/23/2021   Issued
New Method For Producing PBI Films Without Organic Solvents PCT PCT PCT/US19/50993   9/13/2019     Filed
New Method for Producing PBI Films Without Organic Solvents Nationalized PCT Korea 2021-7010970   9/13/2019     Published
Method for Producing PBI Films Without Organic Solvents Continuation United States 17/522,160 11,884,787 11/9/2021 1/30/2024   Issued
New Method for Producing PBI Films Without Organic Solvents Nationalized PCT India 202127017016   12/4/2021     Pending
For Information, Contact:
Lacie Cottrill
Technology Associate
University of South Carolina
lacie@mailbox.sc.edu
Inventors:
Brian Benicewicz (USC)
Fei Huang
Lihui Wang
Laura Murdock
Keywords:
Film
Gel membrane
PBI
Polybenzimidazole
PPA Process
solvent-free
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