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Applicant:
Indian Institute of Technology (IIT) Roorkee 
Title:
Low cost reinforced bipolar membrane fabricated with interface layer 
Inventor(s):
Sujay Chattopadhyay and Bhuvanesh E 
Applicant:
Indian Institute of Technology (IIT) Roorkee 
Application type:
Applied - 2020-05-14 
Application Number:
202011020265 
Applied at:
India 
Entered by:
Indian Institute of Technology (IIT) Roorkee 
Abstract:
The present invention provides synthesis of a low cost bipolar membrane having superior performance by functionalization of base polymers of glass transition, Tg < room temperature and possessing good chemical, mechanical and thermal stability. Catalyst (2, 6) Pyridine dicarboxylic acid also called Dipicolinic acid, (DPA) layer is used for water dissociation. At normal pH (~7.0) DPA acts as deprotonated dicarboxylic acids anions (-COO-1) and its presence at interface, water dissociation potential at 100 mA·cm-2 gets reduced to 2.345 V from 2.65 V, while a commercial (FBM) BPM showed potential of 1.972 V. Application of nylon based woven fabric reduced the overall cost of BPM compared to PEEK based woven fabric as reinforcing material. DPA deposition increased current efficiency (η) of BPM electrodialysis from 59 to 64 % (while the same η with Fumatech BPM is 81% and the energy consumption (E) got reduced from 11.56 to 10.26 kWh·kg-1. 

 
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