Perspectives on Membrane Development for High Temperature Proton Exchange Membrane Fuel Cells

Ying, Jiadi; Liu, Tiancun; Wang, Yeqing; Guo, Min; Shen, Qi; Lin, Yuqing; Yu, Jianguo; Yu, Zhixin

doi:10.1021/acs.energyfuels.3c04835

Cited by 3 publications

(1 citation statement)

References 180 publications

(264 reference statements)

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“…The main disadvantage of LT-PEMFCs is their need for pure hydrogen due to the sensitivity of Pt catalyst to hydrogen contamination . IT-PEMFCs and HT-PEMFCs have many pros than LT-PEMFCs, such as easier heat and water management, faster electrochemical reactions, lower costs of the MEA, and the added benefit of more tolerance to toxic carbon monoxide (CO). − It has been found that small traces of CO (10–20 ppm) in the H 2 feed significantly lowered the LT-PEMFC performance. Contrary, the CO tolerance of the Pt catalyst can further boost up to 1000 and 10000 ppm when operated at high temperatures of 130 and 150 °C, respectively .…”

Section: Proton Exchange Membrane Fuel Cell (Pemfc)mentioning

confidence: 99%

A Critical Review of the Advancement Approach and Strategy in SPEEK-Based Polymer Electrolyte Membrane for Hydrogen Fuel Cell Application

Kamal,

Jaafar,

Khan

et al. 2024

Energy Fuels

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Due to rising energy demand and global warming, the world is shifting from nonrenewable energy to renewable sources, such as fuel cells (FCs), due to their high energy conversion efficiency and environmental friendliness. A proton exchange membrane fuel cell (PEMFC) is an environmentally friendly and efficient FC. It converts the chemical energy stored in hydrogen fuel into electrical energy. A polymer electrolyte membrane (PEM) is a core element of the membrane electrode assembly (MEA). It transfers a proton from the anode to cathode, restricts electron flow across the membrane surface, and prevents reactant mixing. Sulfonated poly(ether ether ketone) (SPEEK)-based membranes are effective PEMs as compared to commonly used Nafion membranes due to their excellent chemical, thermal, and mechanical stability as well as cost-effectiveness. However, it suffers from poor proton conductivity. Normally, the proton conductivity of SPEEK can be improved by enhancing the degree of sulfonation (DS) and temperature and reducing the relative humidity (RH). However, the high DS of SPEEK and temperature with low RH tend to reduce the mechanical strength of PEM, which consequently sacrifices the membrane's lifetime. Therefore, the design of efficient SPEEK PEMs requires further modifications to improve the proton conductivity and strength, which can simultaneously enhance single-cell performance and durability. Therefore, this article reviews the advancements and various strategies to achieve high-performance and long-lived SPEEK-based PEMs. First, the tuning of SPEEK was performed by varying the DS of SPEEK. Second, the progress of modifying SPEEK with inorganic nano additives and metal−organic frameworks (MOFs) was also discussed comprehensively. The review also summarizes the influence of electrically and magnetically aligned nanoparticles on FC performance and membrane durability. Thus, the present review paper can be used as a reference for controlling different parameters to develop both efficient and durable SPEEK-based PEMs that can potentially compete with Nafion-based membranes for FC applications.

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Section: Proton Exchange Membrane Fuel Cell (Pemfc)mentioning

confidence: 99%

A Critical Review of the Advancement Approach and Strategy in SPEEK-Based Polymer Electrolyte Membrane for Hydrogen Fuel Cell Application

Kamal,

Jaafar,

Khan

et al. 2024

Energy Fuels

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A semi-flexible polybenzimidazole with enhanced comprehensive performance for high-temperature proton exchange membrane fuel cells

You,

Deng,

Liu

et al. 2024

International Journal of Hydrogen Energy

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The Incorporation of Sulfonated PAF Enhances the Proton Conductivity of Nafion Membranes at High Temperatures

Cai,

Yu,

Tan

et al. 2024

Polymers

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Nafion membranes are widely used as proton exchange membranes, but their proton conductivity deteriorates in high-temperature environments due to the loss of water molecules. To address this challenge, we propose the utilization of porous aromatic frameworks (PAFs) as a potential solution. PAFs exhibit remarkable characteristics, such as a high specific surface area and porosity, and their porous channels can be post-synthesized. Here, a novel approach was employed to synthesize a PAF material, designated as PAF-45D, which exhibits a specific surface area of 1571.9 m2·g−1 and possesses the added benefits of facile synthesis and a low cost. Subsequently, sulfonation treatment was applied to PAF-45D in order to introduce sulfonic acid groups into its pores, resulting in the formation of PAF-45DS. The successful incorporation of sulfonic groups was confirmed through TG, IR, and EDS analyses. Furthermore, a novel Nafion composite membrane was prepared by incorporating PAF-45DS. The Nyquist plot of the composite membranes demonstrates that the sulfonated PAF-45DS material can enhance the proton conductivity of Nafion membranes at high temperatures. Specifically, under identical film formation conditions, doping with a 4% mass fraction of PAF-45DS, the conductivity of the Nafion composite membrane increased remarkably from 2.25 × 10−3 S·cm−1 to 5.67 × 10−3 S·cm−1, nearly 2.5 times higher. Such promising and cost-effective materials could be envisioned for application in the field of Nafion composite membranes.

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Perspectives on Membrane Development for High Temperature Proton Exchange Membrane Fuel Cells

Cited by 3 publications

References 180 publications

A Critical Review of the Advancement Approach and Strategy in SPEEK-Based Polymer Electrolyte Membrane for Hydrogen Fuel Cell Application

A Critical Review of the Advancement Approach and Strategy in SPEEK-Based Polymer Electrolyte Membrane for Hydrogen Fuel Cell Application

A semi-flexible polybenzimidazole with enhanced comprehensive performance for high-temperature proton exchange membrane fuel cells

The Incorporation of Sulfonated PAF Enhances the Proton Conductivity of Nafion Membranes at High Temperatures

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