PDF Publication Title:
Text from PDF Page: 007
-------- ---- -+++ ++--- --+- + + --- -------+ + - - Membrane - - - Membrane Type Material Maximum Lowest Alcohol Maximum Power Permeability Proton/Anion Density (cm2/s) Conductivity (mW/cm2) (mS/cm) Reference 75 76 86 PEM SPEEK – Zeolite PEM Nafion – Zeolite PEM Nafion - CF3SO3H PEM PV A - Sulfonated Graphene Oxide PEM Nafion – Zeolite ND ND 9,62 390 ND ND ND 8 x 10-7 120 85 FIGURE 4. Illustration of Proton Transport in PEM TABLE 1. Fuel Cell Performance of Various Membrane Materials in DAFC PEM Zeolite 14,4 ND ND 68 16,15 ND 50 120 1,4 x 10-7 88 82 PEM Nafion – Zeolite ND PEM Nafion - ETS 4 ND PEM Nafion – PEDT ND PEM Nafion – Zeolite ND PEM Nafion - PV A nanofiber 150 PEM SPEEK – Polybenzoxazine ND AEM 4-VP & Styrene copolymer 1,5 AEM Polyphenilene 3,97 ND 86 AEM Polystyrene ND 3,6 x 10-7 0,28 70 AEM PVA 72 ND 220 8,3 x 10-7 67 81 7,4 x 10-7 105 87 4,7 x 10-7 240 88 3 x 10-7 350 83 78 1,26 x 10-7 24,6 89 ND 220 ND ND 88 90 77 MODIFICATION OF CATALYST AND MEMBRANE FOR DAFC USING ZEOLITE Nafion as the most common polymer membrane used in PEMFC application suffer a significant problem in DAFC namely alcohol crossover. Alcohol crossover is the permeation of alcohol from cathode to anode through membrane. Chemical energy of the alcohol will render useless when transported this way, lowering the efficiency of fuel utilization. Moreover, alcohol may oxidize to carbon monoxide in the cathode side and poison Pt catalyst used as it cannot fully oxidize methanol into carbon dioxide as Pt-Ru catalyst in the anode do. Because of this hurdle, increasing the alcohol feed concentration which could potentially increase alcohol oxidation kinetics is limited 27. Besides its high alcohol crossover, Nafion is also costly compared to other polymers. Some authors have using other polymers such as chitosan and PVA for DAFC application for DAFC application. Zeolite is widely chosen as polymer filler to reduce alcohol crossover. However, addition of zeolite into polymer matrix reduces its overall proton conductivity. In order to obtain low alcohol crossover and conductivity reduction, zeolite type used and preparation method are optimized. Polymer-inorganic filler composite membranes mainly have been prepared via two methods: (i) mixing polymer solutions with inorganic fillers or their precursors followed by casting and (ii) infiltration of polymer membranes with precursors of inorganic fillers.82 Among those two, the blending-casting method is the most frequently used method. Brett et al.27 modify sulfonated PVA with mordenite 020030-6PDF Image | Zeolite modification for direct alcohol fuel cells DAFCs
PDF Search Title:
Zeolite modification for direct alcohol fuel cells DAFCsOriginal File Name Searched:
zeolite-modification-dafc.pdfDIY PDF Search: Google It | Yahoo | Bing
NFT (Non Fungible Token): Buy our tech, design, development or system NFT and become part of our tech NFT network... More Info
IT XR Project Redstone NFT Available for Sale: NFT for high tech turbine design with one part 3D printed counter-rotating energy turbine. Be part of the future with this NFT. Can be bought and sold but only one design NFT exists. Royalties go to the developer (Infinity) to keep enhancing design and applications... More Info
Infinity Turbine IT XR Project Redstone Design: NFT for sale... NFT for high tech turbine design with one part 3D printed counter-rotating energy turbine. Includes all rights to this turbine design, including license for Fluid Handling Block I and II for the turbine assembly and housing. The NFT includes the blueprints (cad/cam), revenue streams, and all future development of the IT XR Project Redstone... More Info
Infinity Turbine ROT Radial Outflow Turbine 24 Design and Worldwide Rights: NFT for sale... NFT for the ROT 24 energy turbine. Be part of the future with this NFT. This design can be bought and sold but only one design NFT exists. You may manufacture the unit, or get the revenues from its sale from Infinity Turbine. Royalties go to the developer (Infinity) to keep enhancing design and applications... More Info
Infinity Supercritical CO2 10 Liter Extractor Design and Worldwide Rights: The Infinity Supercritical 10L CO2 extractor is for botanical oil extraction, which is rich in terpenes and can produce shelf ready full spectrum oil. With over 5 years of development, this industry leader mature extractor machine has been sold since 2015 and is part of many profitable businesses. The process can also be used for electrowinning, e-waste recycling, and lithium battery recycling, gold mining electronic wastes, precious metals. CO2 can also be used in a reverse fuel cell with nafion to make a gas-to-liquids fuel, such as methanol, ethanol and butanol or ethylene. Supercritical CO2 has also been used for treating nafion to make it more effective catalyst. This NFT is for the purchase of worldwide rights which includes the design. More Info
NFT (Non Fungible Token): Buy our tech, design, development or system NFT and become part of our tech NFT network... More Info
Infinity Turbine Products: Special for this month, any plans are $10,000 for complete Cad/Cam blueprints. License is for one build. Try before you buy a production license. May pay by Bitcoin or other Crypto. Products Page... More Info
| CONTACT TEL: 608-238-6001 Email: greg@infinityturbine.com | RSS | AMP |