High-performance proton exchange membranes for direct methanol fuel cells based on a SPEEK/polybenzoxazine crosslinked structure

RSC Advances ◽  
2015 ◽  
Vol 5 (59) ◽  
pp. 47284-47293 ◽  
Author(s):  
Chunxia Zhao ◽  
Da He ◽  
Yuntao Li ◽  
Jianfei Xiang ◽  
Peng Li ◽  
...  
Keyword(s):  
Fuel Cells ◽  
High Performance ◽  
High Selectivity ◽  
Direct Methanol Fuel Cells ◽  
Proton Exchange Membranes ◽  
Proton Exchange ◽  
Methanol Permeability ◽  
Direct Methanol ◽  
Methanol Fuel Cells

SPEEK/PBa crosslinked membranes with low methanol permeability and high selectivity were prepared as PEM for DMFC applications.

Preparation and properties of semi-IPN proton exchange membranes based on SPEEK and cross-linked PSt-DVB for direct methanol fuel cells

2016 ◽  
Vol 29 (9) ◽  
pp. 1110-1117 ◽  
Author(s):  
Chunxia Zhao ◽  
Da He ◽  
Qiuxia Yang ◽  
Yuntao Li ◽  
Jie Yue
Keyword(s):  
Thermal Stability ◽  
Fuel Cells ◽  
Direct Methanol Fuel Cells ◽  
Polymer Networks ◽  
Proton Exchange Membranes ◽  
Interpenetrating Polymer Networks ◽  
Proton Exchange ◽  
Methanol Permeability ◽  
Direct Methanol ◽  
Methanol Fuel Cells

Sulfonated poly(ether ether ketone)/poly(styrene-divinylbenzene) (SPEEK/PSt-DVB) semi-interpenetrating polymer networks (semi-IPNs) were prepared to be used as proton exchange membranes (PEMs) for direct methanol fuel cells (DMFCs) applications. The morphologies of the membranes were investigated using field emission scanning electron microscopy. The ion-exchange capacity, water uptake, proton conductivity, methanol permeability, mechanical properties, and the thermal stability were characterized for each of the various semi-IPN membranes and evaluated for DMFC suitability. The semi-IPN SPEEK/PSt-DVB structure provided better dimensional stability, thermal stability, and mechanical integrity than the pristine SPEEK membrane. The methanol diffusion coefficient of the SPEEK/PSt-DVB-30% was reduced approximately by 70% when compared to the value of Nafion-117 at 30°C. The maximum selectivity of the semi-IPN membranes was 9.27 × 104 S s cm−3 for the SPEEK/PSt-DVB-20%, which was nearly 2.1 times higher than that of the Nafion-117 membrane. The improved properties of the SPEEK/PSt-DVB membranes were attributed to the homogeneous semi-IPN structure and to the hydrophobic molecular chains of PSt-DVB.

Benzimidazole-cross-linked proton exchange membranes for direct methanol fuel cells

2012 ◽  
Vol 37 (11) ◽  
pp. 9330-9339 ◽  
Author(s):  
Jing Wang ◽  
Chengji Zhao ◽  
Mingyu Li ◽  
Liyuan Zhang ◽  
Jing Ni ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Direct Methanol Fuel Cells ◽  
Proton Exchange Membranes ◽  
Proton Exchange ◽  
Direct Methanol ◽  
Methanol Fuel Cells

Development novel eco-friendly proton exchange membranes doped with nano sulfated zirconia for direct methanol fuel cells

2021 ◽  
Vol 28 (7) ◽  
Author(s):  
Marwa H. Gouda ◽  
Abdelaziz H. Konsowa ◽  
Hassan A. Farag ◽  
Noha A. Elessawy ◽  
Tamer M. Tamer ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Sulfated Zirconia ◽  
Direct Methanol Fuel Cells ◽  
Proton Exchange Membranes ◽  
Proton Exchange ◽  
Direct Methanol ◽  
Methanol Fuel Cells
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