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MECHANICAL AND TRANSPORT PROPERTIES OF NAFION® FOR …

Nafion is a viscoelastic material, responding to stress in a timedependant manner. The result is that Nafion flows under stress and responds dynamically to changes in hydration and stress. Stresses applied to the membrane of a PEM fuel cell, both from clamping as well as strain from changing levels of hydration, cause Nafion to flow. This results in thinning in spots and sometimes leads to ...


Improving and Understanding Direct Methanol Fuel Cell ...

Improving and Understanding Direct Methanol Fuel Cell (DMFC) Performance By Alexandre Hacquard A Thesis submitted to the faculty of WORCESTER POLYTECHNIC INSTITUTE


Construction of Nafion/Hb/Au/ZIF8/CILE and its ...

as electrochemical sensor for determination of bromate and nitrite Juan Liu1,2, Wenju Weng 2, ... (Tianjin Biochemical Reagent Co., China), Nafion (% ethanol solution, Sigma), KBrO 3 (Shanghai Aladdin BioChem. Technology Co., China) and NaNO 2 (Shanghai Chem. Plant, China) were used as received. mol/L phosphate buffer solution (PBS) was used as supporting . Int. J. Electrochem. Sci ...


Nafion™ Membranes Fuel Cell Store

Nafion™ 117, Nafion™ 115, Nafion™ 212, Nafion™ 211 membranes are nonreinforced films, and last numbers apply to their various thickness dimensions. Choosing the proper thickness depends primarily on the differential pressure you expect across the membrane ( what pressure you will be generating the hydrogen at vs. the oxygen), the type of support the membrane will have, and the ...


DuPont Proton Exchange Membrane N117 ...

(BIG DISCOUNT) US 5% OFF | Buy DuPont Proton Exchange Membrane N117 Perfluorosulfonic Acid Ion Membrane Nafion From Seller Aliexpress Tool Discount Store. Enjoy Free Shipping Worldwide! Limited Time Sale Easy Return. Shop Quality Best Instrument Parts Accessories Directly From China Instrument Parts Accessories Suppliers.


Electrochemical glucose biosensor based on ZnO nanorods ...

15/03/2019· The electrodes were airdried at room temperature, immobilized with 20 µL of GOx, and protected with 20 µL of Nafion 117 solution. Figure 5 shows the cyclic voltammograms of the electrodes characterized in M PBS with the presence of 10 mM glucose measured from − 1 to + V at an applied scan rate of 50 mV s −1 .


20*20cm N117 Proton exchange membrane ...

2, product parameters Brand: DuPont Dupont Model: N117 or N117 or Nafion 117 Thickness: 183um Density: 360g/m2 Conductivity: /cm Exchange capacity: /g 3. Pretreatment method (recommended) DuPont Company Tip: N117 membrane can be pretreated before use, the specific method is: The first mass fraction of 5% hydrogen peroxide is treated at 80 °C for 1 h, then immersed …


Electrochemical sensor with dry ionomer membrane ...

An ionomer membrane (24), Nafion® 117 about mm. thick, is positioned upon the sensor chip (21) so that it is in contact with each electrode and the substrate (1). A three phase contact area ( 26 ) is formed by gas inlet ( 6 ), of a circular shape, about mm in diameter through the substrate ( 1 ) and ionomer membrane ( 24 ) immediately adjacent the sensing electrode ( 7 ).


CO Sensors for Fuel Cell Energy

CO Sensors for Fuel Cell Applications This presentation does not contain any proprietary or confidential information. May 25, 2004 DOE HFCIT 2004 Annual Merit Review 2 Objectives • Development of CO sensors that can detect carbon monoxide in a hydrogen containing gas stream • DOE Requirements 1. 1100 ppm CO at <150oC 2. 1001000 ppm CO at 250oC 3. % CO at 250oC800oC • These ...


Direct Methanol Fuel Cells Energy

Alternative HydrocarbonBased Membrane vs. Nafion®117 Power Density (Wcm2) M a x i m u m E f f i c i e n c y BPSH30 (55 µm) Nafion®117 (180 µm) c MeOH = M M M M 80°C HIGHLIGHT: Improved energy conversion efficiency of an optimized BPSH30 based MEA over a ...