SCTF nanosheets@sulfonated poly (p-phenylene-co-aryl ether ketone) composite proton exchange membranes for passive direct methanol fuel cells

2021 ◽  
Author(s):  
Weidong Cui ◽  
Shengyang Zhou ◽  
Jie Bai ◽  
Huidong Qian ◽  
Jifu Zheng ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Direct Methanol Fuel Cells ◽  
Proton Exchange Membranes ◽  
Proton Exchange ◽  
Aryl Ether ◽  
Direct Methanol ◽  
Aryl Ether Ketone ◽  
Ether Ketone ◽  
Methanol Fuel Cells ◽  
Sulfonated Poly

scholarly journals A Robust Composite Proton Exchange Membrane of Sulfonated Poly (Fluorenyl Ether Ketone) with an Electrospun Polyimide Mat for Direct Methanol Fuel Cells Application

Polymers ◽  
2021 ◽  
Vol 13 (4) ◽  
pp. 523
Author(s):  
Geng Cheng ◽  
Zhen Li ◽  
Shan Ren ◽  
Dongmei Han ◽  
Min Xiao ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Composite Membrane ◽  
Direct Methanol Fuel Cells ◽  
Oxidation Stability ◽  
Proton Exchange Membranes ◽  
Proton Exchange ◽  
Direct Methanol ◽  
Ether Ketone ◽  
Methanol Fuel Cells ◽  
Sulfonated Poly

As a key component of direct methanol fuel cells, proton exchange membranes with suitable thickness and robust mechanical properties have attracted increasing attention. On the one hand, a thinner membrane gives a lower internal resistance, which contributes highly to the overall electrochemical performance of the cell, on the other hand, strong mechanical strength is required for the application of proton exchange membranes. In this work, a sulfonated poly (fluorenyl ether ketone) (SPFEK)-impregnated polyimide nanofiber mat composite membrane (PI@SPFEK) was fabricated. The new composite membrane with a thickness of about 55 μm exhibited a tensile strength of 35.1 MPa in a hydrated state, which is about 65.8% higher than that of the pristine SPFEK membrane. The antioxidant stability test in Fenton’s reagent shows that the reinforced membrane affords better oxidation stability than does the pristine SPFEK membrane. Furthermore, the morphology, proton conductivity, methanol permeability, and fuel cell performance were carefully evaluated and discussed.

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