Proceedings of the Korean Vacuum Society Conference (한국진공학회:학술대회논문집)
- 2012.08a
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- Pages.224-224
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- 2012
Water Repellency on a Nanostructured Superhydrophobic Carbon Fibers Network
- Ko, Tae-Jun (Department of Materials Science and Engineering, Seoul National University) ;
- Her, Eun-Kyu (Department of Materials Science and Engineering, Seoul National University) ;
- Shin, Bong-Su (Institute for Multi-disciplinary Convergence of Materials, Korea Institute of Science and Technology) ;
- Kim, Ho-Young (School of Mechanical and Aerospace Engineering, Seoul National University) ;
- Lee, Kwang-Ryeol (Institute for Multi-disciplinary Convergence of Materials, Korea Institute of Science and Technology) ;
- Hong, Bo-Ki (Eco-Technology Center, Hyundai-Kia Motors) ;
- Kim, Sae-Hoon (Eco-Technology Center, Hyundai-Kia Motors) ;
- Oh, Kyu-Hwan (Department of Materials Science and Engineering, Seoul National University) ;
- Moon, Myoung-Woon (Institute for Multi-disciplinary Convergence of Materials, Korea Institute of Science and Technology)
- Published : 2012.08.20
Abstract
For decades, carbon fiber has expanded their application fields from reinforced composites to energy storage and transfer technologies such as electrodes for super-capacitors and lithium ion batteries and gas diffusion layers for proton exchange membrane fuel cell. Especially in fuel cell, water repellency of gas diffusion layer has become very important property for preventing flooding which is induced by condensed water could damage the fuel cell performance. In this work, we fabricated superhydrophobic network of carbon fiber with high aspect ratio hair-like nanostructure by preferential oxygen plasma etching. Superhydrophobic carbon fiber surfaces were achieved by hydrophobic material coating with a siloxane-based hydrocarbon film, which increased the water contact angle from