Evaluation of a Sol-Gel Derived Nafion/Silica Hybrid Membrane for Proton Electrolyte Membrane Fuel Cell Applications: I. Proton Conductivity and Water Content

2001 ◽  
Vol 148 (8) ◽  
pp. A898 ◽  
Author(s):  
N. Miyake ◽  
J. S. Wainright ◽  
R. F. Savinell
Keyword(s):  
Fuel Cell ◽  
Water Content ◽  
Proton Conductivity ◽  
Sol Gel ◽  
Hybrid Membrane ◽  
Electrolyte Membrane ◽  
Silica Hybrid

scholarly journals Nafion-Peptized Laponite Clay Nanocomposite Membrane for PEMFC

2011 ◽  
Vol 410 ◽  
pp. 148-151
Author(s):  
Ananta Kumar Mishra ◽  
Seon Hyeong Bae ◽  
Nam Hoon Kim ◽  
Kin Tak Lau ◽  
Joong Hee Lee
Keyword(s):  
Fuel Cell ◽  
Proton Conductivity ◽  
Polymer Electrolyte Membrane ◽  
Nanocomposite Membrane ◽  
Acid Activation ◽  
Electrolyte Membrane ◽  
Technical Properties ◽  
Acid Activated Clay ◽  
Hydrolysis Of

Nafion-clay nanocomposite membrane has been prepared by dispersing unmodified and acid activated Laponite XLS in Nafion 20% dispersion. The resulting membranes possess better proton conductivity and mechanical strength as compared to the virgin membrane. Acid activation of the nanoclay leads to thein-situgeneration of H3PO4by the hydrolysis of the peptizer present on the surface of the nanoclay. Thein-situgenerated H3PO4helps in improving all the technical properties of the nanocomposite including the water uptake and proton conductivity of the nanocomposite, containing acid activated clay compared to the nanocomposite, containing unmodified clay. The maximum proton conductivity of 270.2 mS/cm is achieved at 110 °C for the nanocomposite membrane containing 3% acid-activated Laponite compared to 136.2 mS/cm for the virgin Nafion. Keywords: Nafion, clay, nanocomposite, peptizer, polymer electrolyte membrane fuel cell (FEMFC), proton conductivity, membrane

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.

scholarly journals Influence of silica content in crosslinked PVA/PSSA_MA/Silica hybrid membrane for direct methanol fuel cell (DMFC)

2007 ◽  
Vol 15 (5) ◽  
pp. 412-417 ◽  
Author(s):  
Dae Sik Kim ◽  
Michael D. Guiver ◽  
Mu Young Seo ◽  
Hyun Il Cho ◽  
Dae Hoon Kim ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Direct Methanol Fuel Cell ◽  
Silica Content ◽  
Hybrid Membrane ◽  
Direct Methanol ◽  
Methanol Fuel Cell ◽  
Silica Hybrid

scholarly journals Sol–gel derived poly(vinyl alcohol)/maleic acid/silica hybrid membrane for desalination by pervaporation

2011 ◽  
Vol 383 (1-2) ◽  
pp. 96-103 ◽  
Author(s):  
Zongli Xie ◽  
Manh Hoang ◽  
Tuan Duong ◽  
Derrick Ng ◽  
Buu Dao ◽  
...  
Keyword(s):  
Maleic Acid ◽  
Vinyl Alcohol ◽  
Sol Gel ◽  
Hybrid Membrane ◽  
Poly Vinyl Alcohol ◽  
Silica Hybrid

The Influence on Proton Conductivity and Methanol Permeability of SiO2/PVA-PAMPS Composite Membrane

2012 ◽  
Vol 503-504 ◽  
pp. 625-628 ◽  
Author(s):  
Chun Hua Yuan ◽  
Gui Bao Guo ◽  
Sheng Li An
Keyword(s):  
Proton Conductivity ◽  
High Selectivity ◽  
Direct Methanol Fuel Cells ◽  
Sol Gel ◽  
Methanol Permeability ◽  
Electrolyte Membrane ◽  
Direct Methanol ◽  
Order Of Magnitude ◽  
Sol Gel Synthesis

Polyvinyl alcohol(PVA) modified by SiO2/poly 2-acrylamido 2-methylpropane sulfonic acid (PAMPS) electrolyte membrane (SiO2/PVA-PAMPS ) was prepared by a Sol-gel synthesis in situ technique for DMFC. The influence of the different ratio of AMPS and SiCl4 on the proton conductivity and methanol permeability of these membranes was studied using an impedance analyzer and a gas chromatograph. The results showed that with increasing of the content of silicon dioxide, the SiO2 was homogeneously distributed in the membrane. As the AMPS content increased, the proton conductivity of the SiO2/PVA-PAMPS membranes also increased. The swelling degree of the SiO2/PVA-PAMPS membrane with 30wt% SiCl4 and 20wt% AMPS was 28.79% at 25°C. The membranes possess a methanol permeability of around 10-7 cm2•S-1, which is about one order of magnitude lower than that of Nafion115. These membranes have high selectivity and are promising for use in direct methanol fuel cells (DMFC).

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