Review of Chitosan-Based Polymers as Proton Exchange Membranes and Roles of Chitosan-Supported Ionic Liquids

Perfluorosulphonic acid-based membranes such as Nafion are widely used in fuel cell applications. However, these membranes have several drawbacks, including high expense, non-eco-friendliness, and low proton conductivity under anhydrous conditions. Biopolymer-based membranes, such as chitosan (CS),...

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Bibliographic Details
Published in:International journal of molecular sciences 2020-01, Vol.21 (2), p.632
Main Authors: Rosli, Nur Adiera Hanna, Loh, Kee Shyuan, Wong, Wai Yin, Yunus, Rozan Mohamad, Lee, Tian Khoon, Ahmad, Azizan, Chong, Seng Tong
Format: Article
Language:English
Subjects:
Biopolymers
Carrageenan
Cellulose
Chitosan
chitosan biopolymer-based membrane
Clean energy
Climate change
Electrolytes
fuel cell applications
Fuel cells
Hydrogen
Ion currents
Ionic liquids
Mechanical properties
Membranes
performance of fuel cell
Permeability
Polymer blends
Review
Thermal stability
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Summary:Perfluorosulphonic acid-based membranes such as Nafion are widely used in fuel cell applications. However, these membranes have several drawbacks, including high expense, non-eco-friendliness, and low proton conductivity under anhydrous conditions. Biopolymer-based membranes, such as chitosan (CS), cellulose, and carrageenan, are popular. They have been introduced and are being studied as alternative materials for enhancing fuel cell performance, because they are environmentally friendly and economical. Modifications that will enhance the proton conductivity of biopolymer-based membranes have been performed. Ionic liquids, which are good electrolytes, are studied for their potential to improve the ionic conductivity and thermal stability of fuel cell applications. This review summarizes the development and evolution of CS biopolymer-based membranes and ionic liquids in fuel cell applications over the past decade. It also focuses on the improved performances of fuel cell applications using biopolymer-based membranes and ionic liquids as promising clean energy.
ISSN:1422-0067
1661-6596
1422-0067
DOI:10.3390/ijms21020632