Novel Sulfonated Polyimides as Polyelectrolytes for Fuel Cell Application. 2. Synthesis and Proton Conductivity of Polyimides from 9,9-Bis(4-aminophenyl)fluorene-2,7-disulfonic Acid

2002 ◽  
Vol 35 (17) ◽  
pp. 6707-6713 ◽  
Author(s):  
Xiaoxia Guo ◽  
Jianhua Fang ◽  
Tatsuya Watari ◽  
Kazuhiro Tanaka ◽  
Hidetoshi Kita ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Proton Conductivity ◽  
Disulfonic Acid ◽  
Fuel Cell Application ◽  
Sulfonated Polyimides

scholarly journals Surface-modified fibrous membranes for fuel cell application

2019 ◽  
Vol 90 ◽  
pp. 01005
Author(s):  
Noor Fatina Emelin Nor Fadzil ◽  
Ebrahim Abouzari-Lotf ◽  
Mohan V. Jacob ◽  
Nurfatehah Wahyuny Che Jusoh ◽  
Arshad Ahmad
Keyword(s):  
Fuel Cell ◽  
Proton Conductivity ◽  
Composite Membrane ◽  
Barrier Layer ◽  
Methanol Permeability ◽  
Low Permeability ◽  
Membrane Selectivity ◽  
Fuel Cell Application ◽  
Fibrous Membranes ◽  
Surface Modified

Low permeability layers of poly(1-vinylimidazole) were polymerised and deposited onto both sides of electrospun polyethersulfone (PES) nanofibrous sheet radiofrequency plasma. The layers not only act as an efficient fuel barrier layer but also impart high and stable proton conductivity, as well as better chemical and dimensional stabilities. Typically, the composite membrane exhibited methanol permeability as low as 33.20 x 10-8 cm2 s-1 and high through-plane proton conductivity of 52.4 mS cm-1 at 95% RH, indicating membrane selectivity of 0.675 x 108 mS.s cm-3, which is approximately 33 times greater than the selectivity of N115 under similar conditions.

Synthesis and properties of novel sulfonated polyimides derived from naphthalenic dianhydride for fuel cell application

2008 ◽  
Vol 313 (1-2) ◽  
pp. 106-119 ◽  
Author(s):  
Xinbing Chen ◽  
Yan Yin ◽  
Pei Chen ◽  
Hidetoshi Kita ◽  
Ken-Ichi Okamoto
Keyword(s):  
Fuel Cell ◽  
Fuel Cell Application ◽  
Sulfonated Polyimides

Facile Preparation of Well-Dispersed GO-SPEEK Composite Membranes by Electrospun for Fuel Cell Applications

2015 ◽  
Vol 1735 ◽  
Author(s):  
Xu Liu ◽  
Xiaoyu Meng ◽  
Chuanming Shi ◽  
Jiangbei Huo ◽  
Ziqing Cai ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Proton Conductivity ◽  
Composite Membrane ◽  
Composite Membranes ◽  
Proton Exchange ◽  
Electrospinning Technique ◽  
Fuel Cell Application ◽  
High Proton ◽  
Poly Ether Ether Ketone ◽  
Direct Methanol

ABSTRACTGraphene oxide (GO) is one of the most attractive inorganic nanofillers in proton exchange membranes (PEMs) for its large specific surface area and high proton conductivity. The proton conductivity of GO nanosheet is known to be orders of magnitude greater than the bulk GO, thus it is essential to improve the dispersion of GO nanosheets in the PEM matrix to achieve higher conductivity. In this study, we report a facile and effective method to fabricate a GO/sulfonated poly ether ether ketone (SPEEK) composite membrane with well-dispersed GO nanosheets in SPEEK matrix by using electrospinning technique for direct methanol fuel cell application. The composite membrane exhibits improved proton conductivity, dimensional stability and methanol barrier property due to the presence of well-dispersed GOs. It is believed that the GO nanosheets can not only induce continuous channels for proton-conducting via Grotthuss mechanism, but also act as methanol barriers to hinder the methanol molecules from passing through the membrane.

Synthesis and properties of novel sulfonated polyimides bearing sulfophenyl pendant groups for fuel cell application

Polymer ◽  
2009 ◽  
Vol 50 (2) ◽  
pp. 510-518 ◽  
Author(s):  
Kangcheng Chen ◽  
Xinbing Chen ◽  
Kazuaki Yaguchi ◽  
Noritaka Endo ◽  
Mitsuru Higa ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Fuel Cell Application ◽  
Sulfonated Polyimides

scholarly journals Novel Ionic Conducting Composite Membrane Based on Polymerizable Ionic Liquids

Polymers ◽  
2021 ◽  
Vol 13 (21) ◽  
pp. 3704
Author(s):  
Yaroslav L. Kobzar ◽  
Ghania Azzouz ◽  
Hashim Albadri ◽  
Jocelyne Levillain ◽  
Isabelle Dez ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Fuel Cell ◽  
Proton Conductivity ◽  
Liquid Membranes ◽  
Mechanical And Thermal Properties ◽  
Medium Temperature ◽  
Supported Ionic Liquid ◽  
Fuel Cell Application ◽  
Supported Ionic Liquid Membranes

In this work, the design and characterization of new supported ionic liquid membranes, as medium-temperature polymer electrolyte membranes for fuel-cell application, are described. These membranes were elaborated by the impregnation of porous polyimide Matrimid® with different synthesized protic ionic liquids containing polymerizable vinyl, allyl, or methacrylate groups. The ionic liquid polymerization was optimized in terms of the nature of the used (photo)initiator, its quantity, and reaction duration. The mechanical and thermal properties, as well as the proton conductivities of the supported ionic liquid membranes were analyzed in dynamic and static modes, as a function of the chemical structure of the protic ionic liquid. The obtained membranes were found to be flexible with Young’s modulus and elongation at break values were equal to 1371 MPa and 271%, respectively. Besides, these membranes exhibited high thermal stability with initial decomposition temperatures > 300 °C. In addition, the resulting supported membranes possessed good proton conductivity over a wide temperature range (from 30 to 150 °C). For example, the three-component Matrimid®/vinylimidazolium/polyvinylimidazolium trifluoromethane sulfonate membrane showed the highest proton conductivity—~5 × 10−2 mS/cm and ~0.1 mS/cm at 100 °C and 150 °C, respectively. This result makes the obtained membranes attractive for medium-temperature fuel-cell application.

Polymer based Membrane Electrospun Fiber in Fuel Cell Application: A Short Review

2014 ◽  
Vol 69 (9) ◽  
Author(s):  
Hazlina Junoh ◽  
Juhana Jaafar ◽  
M. H. D. Othman ◽  
Mukhlis A. Rahman
Keyword(s):  
Renewable Energy ◽  
Fuel Cells ◽  
Fuel Cell ◽  
Proton Conductivity ◽  
Electrospun Fiber ◽  
Renewable Energy Sources ◽  
Proton Exchange ◽  
Nanocomposite Membrane ◽  
Electrolyte Membrane ◽  
Fuel Cell Application

usage which contributes to the environmental issues. Among the type of existing renewable energy, fuel cells is the most promising renewable energy sources since the energy can be directly converted from combustible of fuel. The proton exchange membrane (PEM) is the heart of the fuel cells system. The research and development on proton electrolyte membrane is keep burgeoned. Even though the studies of the electrolyte nanocomposite membrane for fuel cell application are quite various but only a few studies focused on the effect of electrospun nanocomposite membrane on the performance of proton electrolyte membrane. This review is focusing on the electrospinning process for the preparation of electrospun fiber membrane. This review is concentrates on polymer based membrane electrospun nanofiber and their influence on proton conductivity as well as on fuel crossover barrier properties. The proton conductivity and fuel crossover can be improved by fully exfoliated structure of nanocomposite electrolyte membrane via electropinning process and thus the membrane can be an alternative PEM for DMFC applications.

Synthesis and properties of novel sulfonated polyimides bearing sulfophenyl pendant groups for polymer electrolyte fuel cell application

Polymer ◽  
2007 ◽  
Vol 48 (7) ◽  
pp. 1962-1971 ◽  
Author(s):  
Zhaoxia Hu ◽  
Yan Yin ◽  
Hidetoshi Kita ◽  
Ken-ichi Okamoto ◽  
Yoshiki Suto ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Polymer Electrolyte ◽  
Polymer Electrolyte Fuel Cell ◽  
Fuel Cell Application ◽  
Sulfonated Polyimides
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