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Collagen Based Biomaterials as Membranes for PEM Fuel Cells Applications
The production of clean and renewable energy at an affordable cost is becoming a key global sustainability goal. With this objective in sight, proton-exchange membrane fuel cells (PEM FCs) have become leaders in the race for clean energy generation. PEM FCs utilize a proton-conductive membrane, serving as the electrolyte, to generate electricity from pure hydrogen and produce water as the only side product. Recently, there has been a need to replace the gold standard PEM, Nafion, due to its high cost and deteriorated performance at high temperatures. This work reports the synthesis of conductive, highly elastic, and low-cost membranes for potential use in PEM FCs. The developed membranes were composed of the sustainable materials: 1) marine-derived collagen and chitosan, which can be extracted from fish waste, 2) the green solvent ionic liquid (IL), and 3) the biocompatible plasticizer polyethylene glycol (PEG). In this study, 4 membrane samples were prepared while varying the amount of the plasticizer PEG known to improve conductivity via ion-pair dissociation. The results showed that the membranes were highly elastic with conductivity increasing proportionally to PEG content. The best performing membrane had a conductivity of ~ 0.00112 S/cm. However, although having a good conductivity, it remained lower than that of Nafion (0.1 S/cm). Therefore, future work to further improve the membrane's conductivity can include adjusting the weight percentages of the components and hydrating the membrane before testing. Furthermore, evaluation of the membranes' performance at high temperatures can be performed to assess their potential use in high temperature PEMs.
Collagen Based Biomaterials as Membranes for PEM Fuel Cells Applications
The production of clean and renewable energy at an affordable cost is becoming a key global sustainability goal. With this objective in sight, proton-exchange membrane fuel cells (PEM FCs) have become leaders in the race for clean energy generation. PEM FCs utilize a proton-conductive membrane, serving as the electrolyte, to generate electricity from pure hydrogen and produce water as the only side product. Recently, there has been a need to replace the gold standard PEM, Nafion, due to its high cost and deteriorated performance at high temperatures. This work reports the synthesis of conductive, highly elastic, and low-cost membranes for potential use in PEM FCs. The developed membranes were composed of the sustainable materials: 1) marine-derived collagen and chitosan, which can be extracted from fish waste, 2) the green solvent ionic liquid (IL), and 3) the biocompatible plasticizer polyethylene glycol (PEG). In this study, 4 membrane samples were prepared while varying the amount of the plasticizer PEG known to improve conductivity via ion-pair dissociation. The results showed that the membranes were highly elastic with conductivity increasing proportionally to PEG content. The best performing membrane had a conductivity of ~ 0.00112 S/cm. However, although having a good conductivity, it remained lower than that of Nafion (0.1 S/cm). Therefore, future work to further improve the membrane's conductivity can include adjusting the weight percentages of the components and hydrating the membrane before testing. Furthermore, evaluation of the membranes' performance at high temperatures can be performed to assess their potential use in high temperature PEMs.
Collagen Based Biomaterials as Membranes for PEM Fuel Cells Applications
Ali, Amaal Abdulraqeb (author) / Al-Othman, Amani (author) / Tawalbeh, Muhammad (author) / Almomani, Fares (author)
2024-06-03
732501 byte
Conference paper
Electronic Resource
English
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