scholarly journals Bi-Functional Composting the Sulfonic Acid Based Proton Exchange Membrane for High Temperature Fuel Cell Application

Polymers ◽  
2020 ◽  
Vol 12 (5) ◽  
pp. 1000
Author(s):  
Guoxiao Xu ◽  
Juan Zou ◽  
Zhu Guo ◽  
Jing Li ◽  
Liying Ma ◽  
...  
Keyword(s):  
High Temperature ◽  
Fuel Cell ◽  
Composite Membrane ◽  
Sulfonic Acid ◽  
Elevated Temperatures ◽  
Mechanical Stability ◽  
Strong Dependence ◽  
Proton Exchange ◽  
Nafion Membrane ◽  
Silica Nanofiber

Although sulfonic acid (SA)-based proton-exchange membranes (PEMs) dominate fuel cell applications at low temperature, while sulfonation on polymers would strongly decay the mechanical stability limit the applicable at elevated temperatures due to the strong dependence of proton conduction of SA on water. For the purpose of bifunctionally improving mechanical property and high-temperature performance, Nafion membrane, which is a commercial SA-based PEM, is composited with fabricated silica nanofibers with a three-dimensional network structure via electrospinning by considering the excellent water retention capacity of silica. The proton conductivity of the silica nanofiber–Nafion composite membrane at 110 °C is therefore almost doubled compared with that of a pristine Nafion membrane, while the mechanical stability of the composite Nafion membrane is enhanced by 44%. As a result, the fuel cell performance of the silica nanofiber-Nafion composite membrane measured at high temperature and low humidity is improved by 38%.

scholarly journals Progress of high temperature polybenzimidazole proton exchange membrane: a systematic review

2021 ◽  
Vol 2076 (1) ◽  
pp. 012032
Author(s):  
Guanghan Liu
Keyword(s):  
High Temperature ◽  
Fuel Cell ◽  
Proton Exchange Membrane ◽  
Strong Dependence ◽  
Water Environment ◽  
Oxidative Degradation ◽  
Proton Exchange ◽  
Point Of View ◽  
Exchange Membrane ◽  
High Temperature Pem

Abstract Proton exchange membrane (PEM) is the core component of proton fuel cell. Generally speaking, ordinary PEM has the poor barrier to fuel (especially liquid fuel) and proton conduction has a strong dependence on water molecules. Compared with ordinary PEM, high temperature fuel cell works in high temperature non-water environment, which overcomes the above problems. Besides, the system is complex with low impurity and much simpler flow field design. Polybenzimidazole (PBI) not only meets the requirements of high temperature, but also has higher proton conductivity than ordinary PEM, i.e., is the best material for high temperature PEM. From this point of view, the properties and fabrication of PBI are systematically reviewed. Specifically, the factors influencing the performance of acid doped PBI high temperature PEM as well as existing problems (high temperature degradation as well as chemical oxidative degradation) are demonstrated. Furthermore, the corresponding solutions and future direction are put forward.

Polyvinylidene Fluoride Nanofiber Composite Membrane Coated with Perfluorinated Sulfuric Acid for Microbial Fuel Cell Application

2020 ◽  
Vol 20 (9) ◽  
pp. 5711-5715
Author(s):  
Ho-Young Jung ◽  
Sung-Hee Roh
Keyword(s):  
Sulfuric Acid ◽  
Fuel Cell ◽  
Microbial Fuel Cell ◽  
Power Density ◽  
Composite Membrane ◽  
Polyvinylidene Fluoride ◽  
Proton Exchange Membrane ◽  
Proton Exchange ◽  
Nafion Membrane ◽  
Energy Devices

A microbial fuel cell (MFC) is bioelectrochemical system that enables the biochemical activities of bacteria to generate electricity. A composite membrane was prepared from polyvinylidene fluoride nanofiber coated with perfluorinated sulfuric acid ionomer (PVDF-PFSA) and evaluated as a replacement for the commercially available Nafion membrane, which is commonly used in MFC reactors. The power density obtained with the PVDF-PFSA composite membrane was higher than that obtained with the Nafion membrane in MFC reactors. The PVDF-PFSA composite membrane produced a maximum power density of 548 mW/m2. Hence, the PVDF-PFSA composite reported here is a promising candidate for use as a proton exchange membrane in energy devices and water treatment systems.

Submicro-pore containing poly(ether sulfones)/polyvinylpyrrolidone membranes for high-temperature fuel cell applications

2015 ◽  
Vol 3 (16) ◽  
pp. 8847-8854 ◽  
Author(s):  
Zhibin Guo ◽  
Ruijie Xiu ◽  
Shanfu Lu ◽  
Xin Xu ◽  
Shichun Yang ◽  
...  
Keyword(s):  
Fuel Cells ◽  
High Temperature ◽  
Fuel Cell ◽  
Proton Exchange Membrane ◽  
Proton Exchange ◽  
Exchange Membrane

A novel submicro-pore containing proton exchange membrane is designed and fabricated for application in high-temperature fuel cells.

scholarly journals Optimization of high-temperature proton exchange membrane fuel cell flow channel based on genetic algorithm

2021 ◽  
Vol 7 ◽  
pp. 1374-1384 ◽  
Author(s):  
Taiming Huang ◽  
Wei Wang ◽  
Yao Yuan ◽  
Jie Huang ◽  
Xi Chen ◽  
...  
Keyword(s):  
Genetic Algorithm ◽  
High Temperature ◽  
Fuel Cell ◽  
Proton Exchange Membrane ◽  
Flow Channel ◽  
Proton Exchange ◽  
Exchange Membrane
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