Enhanced performance of the sulfonated polyimide proton exchange membranes by graphene oxide: Size effect of graphene oxide

2014 ◽  
Vol 458 ◽  
pp. 36-46 ◽  
Author(s):  
Yao He ◽  
Cuiyan Tong ◽  
Lei Geng ◽  
Lingdi Liu ◽  
Changli Lü
Keyword(s):  
Graphene Oxide ◽  
Size Effect ◽  
Proton Exchange Membranes ◽  
Proton Exchange ◽  
Sulfonated Polyimide

A Study of the Nitrogen-Containing Heterocycles on Copolyimide Properties for Proton Exchange Membranes

2013 ◽  
Vol 401-403 ◽  
pp. 563-566 ◽  
Author(s):  
Yu Han Li ◽  
Wei Jian Wang ◽  
Yu Fei Chen ◽  
Lei Wang
Keyword(s):  
Mechanical Properties ◽  
Thermal Stability ◽  
Proton Conductivity ◽  
Water Uptake ◽  
Main Chain ◽  
Proton Exchange Membranes ◽  
Proton Exchange ◽  
Membrane Properties ◽  
Dimensional Changes ◽  
Sulfonated Polyimide

Containing pyrimidine and pyridine monomers were incorporated respectively into the main chain of a sulfonated polyimide in order to investigate the effect of nitrogen-containing heterocycles on membrane properties such as water uptake and proton conductivity. With increasing content of the nitrogen-containing heterocycles, water uptake of membranes and dimensional changes remarkable decrease. The copolymer showed higher thermal stability (desulfonation temperature up to 330 °C) and reasonable good mechanical properties. These membranes also showed higher proton conductivity, which was comparable or even higher than Nafion 117.

Metal–organic framework–graphene oxide composites: a facile method to highly improve the proton conductivity of PEMs operated under low humidity

2015 ◽  
Vol 3 (31) ◽  
pp. 15838-15842 ◽  
Author(s):  
Lijia Yang ◽  
Beibei Tang ◽  
Peiyi Wu
Keyword(s):  
Graphene Oxide ◽  
Proton Conductivity ◽  
Metal Organic Framework ◽  
Proton Exchange Membranes ◽  
Proton Exchange ◽  
Oxide Composite ◽  
Metal Organic ◽  
Low Humidity ◽  
Oxide Composites ◽  
Organic Framework

Nafion based proton exchange membranes (PEMs) modified by a metal–organic framework–graphene oxide composite (ZIF-8@GO) are reported.

Proton Exchange Membrane Based on Sulfonated Polyimide for Fuel Cells: State-of-the-Art and Recent Developments

2011 ◽  
Vol 239-242 ◽  
pp. 3032-3038 ◽  
Author(s):  
Ya Ping Zhang ◽  
Ming Zhu Yue ◽  
Yan Chen
Keyword(s):  
Fuel Cells ◽  
Proton Exchange Membrane ◽  
State Of The Art ◽  
Proton Exchange Membranes ◽  
Proton Exchange ◽  
Sulfonated Polyimide ◽  
Recent Developments ◽  
Reasonable Approach ◽  
Exchange Membrane ◽  
Inorganic Composite

Proton exchange membrane is one of the most important components for proton exchange membrane fuel cells (PEMFCs). The preparation of proton exchange membranes based on sulfonated polyimide (SPI) for PEMFCs in recent years was reviewed, and methods of improving the water stability and proton conductivity of such membranes were highlighted. It was suggested that preparation of novel SPI membranes or organic-inorganic composite SPI membranes should be a reasonable approach to strengthen their combination property.

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