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Structural and preliminary electrochemical characteristics of palm oil based carbon nanospheres as anode materials in lithium ion batteries
Arenst Andreas Arie, Hans Kristianto, Ratna Frida Susanti, Hary Devianto, Martin Halim, Joong Kee Lee 한국탄소학회 Carbon Letters 4 Pages
한국탄소학회 Carbon Letters 2016, Vol.18 14 80-83 (4 pages)
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Microstructural changes of polyacrylonitrile-based carbon fibers (T300 and T700) due to isothermal oxidation (1): focusing on morphological changes using scanning electron microscopy
Seong-Moon Oh, Sang-Min Lee, Dong-Su Kang, Jae-Seung Roh 한국탄소학회 Carbon Letters 6 Pages
한국탄소학회 Carbon Letters 2016, Vol.18 3 18-23 (6 pages)
than that of T700 fibers. The diameter of T700 fibers decreased linearly with increasing burn-off. The diameter of T300 also decreased with increasing burn-off but at slower rates over time. Cross-sectional observations after oxidation reactions revealed hollow cores in the longitudinal direction for both T300 and T700 fibers. The formation of hollow cores after oxidation can be traced to differences in the fabrication process such as the starting material and final heat treatment temperature. -
Monolithic porous carbon materials prepared from polyurethane foam templates
Jo?o Pires, Andr? Janeiro, Filipe J. Oliveira, Alexandre C. Bastos, Mois?s L. Pinto 한국탄소학회 Carbon Letters 7 Pages
한국탄소학회 Carbon Letters 2016, Vol.18 2 11-17 (7 pages)
Monolithic carbon foams with hierarchical porosity were prepared from polyurethane templates and resol precursors. Mesoporosity was achieved through the use of soft templating with surfactant Pluronic F127, and macroporosity from the polyurethane foams was retained. Conditions to obtain high porosity materials were optimized. The best materials have high specific surface areas (380 and 582 m2 g?1, respectively) and high electrical conductivity, which make them good candidates for supports in... -
Advances in liquid crystalline nano-carbon materials: preparation of nano-carbon based lyotropic liquid crystal and their fabrication of nano-carbon fibers with liquid crystalline spinning
Yong-Mun Choi, in Jung Jun Yeon, Hwang Seung Min, Kim Hyeonsu Jeong, Bon-Cheol Ku, Munju Goh 한국탄소학회 Carbon Letters 10 Pages
한국탄소학회 Carbon Letters 2015, Vol.16 No.4 1 223-232 (10 pages)
This review presents current progress in the preparation methods of liquid crystalline nanocarbon materials and the liquid crystalline spinning method for producing nano-carbon fibers. In particular, we focus on the fabrication of liquid crystalline carbon nanotubes by spinning from superacids, and the continuous production of macroscopic fiber from liquid crystalline graphene oxide. -
Fabrication of isotropic bulk graphite using artificial graphite scrap
Sang-Min Lee, Dong-Su Kang, Woo-Seok Kim, Jea-Seung Roh 한국탄소학회 Carbon Letters 4 Pages
한국탄소학회 Carbon Letters 2014, Vol.15 No.2 12 142-145 (4 pages)
Isotropic synthetic graphite scrap and phenolic resin were mixed, and the mixed powder was formed at 300 MPa to produce a green body. New bulk graphite was produced by carbonizing the green body at 700°C, and the bulk graphite thus produced was impregnated with resin and re-carbonized at 700°C. The bulk density of the bulk graphite was 1.29 g/cm3, and the porosity of the open pores was 29.8%. After one impregnation, the density increased to 1.44 g/cm3 while the porosity decreased to 25.2%.... -
Carbon/Carbon Composite by Pack-cementation Method
J.I.KIM, I.S.Oh, H.J.Joo 한국탄소학회 Carbon Letters 10 Pages
한국탄소학회 Carbon Letters 2001, Vol.2 No.1 5 27-36 (10 pages)
21세기에는 에너지의 고갈과 더불어 고도로 발달한 산업환경으로 인하여 재료의 경량화, 고성능화가 촉진되고 있다. 또한 우주산업과 운송산업은 방송, 통신산업과 더불어 가장 크게 성장할 것으로 예측된다. 이러한 우주산업의 재료들과 초고속 운송시스켐의 재료들이 CFRC가 내열, 구조재료로서 각광을 받고 있다[1-4].그러나 탄소재료는 500\'C 정도의 낮은 온도에서 산소와 급격히 반응하여 burn-off되는 심각한 결전을 가지고 있으므로 CFRC를 산화환겨에서 사용하기 위해서 수많은 연구가 수행되었다[5-8].
