PDF Publication Title:
Text from PDF Page: 083
Chapter 5 Micro-structured Nafion membranes for DMFC applications 2.2. Preparation of micro-structured and heat/pressure treated Nafion membranes Hot embossing is a fast method for the replication of structures at the micro- and nano-scale. This technology, in principle, has the capability of patterning sub 10 nm features [19]. Identical structures can be produced as required over large surfaces. It is a simple, low cost process which creates patterns by mechanical deformation of imprint resist and subsequent processes. A schematic drawing of this process can be seen in Figure 1. Hot embossing can be used to pattern the membranes. A great variety of nanoscale features is possible, so different patterns can be made. Figure 1. Hot embossing process. In this work the membranes were patterned with hot embossing in a cleanroom. Prior to hot embossing, the membranes were kept in a vacuum oven at 30 0C for at least 24 hours. To distinguish the effect of heat and pressure alone during the hot embossing process, membranes were embossed using a non patterned mold so no structure was embossed onto the membrane, leaving it smooth. The membranes were hot embossed at a temperature of 135 0C for 6 minutes at pressure of 30 bars. After this, the membranes were cooled down under pressure to 60 0C in about 15 minutes and were easily peeled off from the mold. 2.3. Membrane characterization Scanning electron microscopy (SEM) Membranes were visualized by a scanning electron microscope (Jeol JSM 5600LV). The membrane samples were sputtered with a thin layer of gold (30 nm) using a Balzers Union SCD 040 sputtering device prior to the SEM observation. 75PDF Image | Development of membrane materials for direct methanol fuel cells
PDF Search Title:
Development of membrane materials for direct methanol fuel cellsOriginal File Name Searched:
thesis_H_Yildirim.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 (Standard Web Page)