Synthesis of branched carbon nanotubes by carbonization of solid polyvinylidene fluoride fibers |
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| Authors: | Han-Ik Joh Heung Yong Ha Joghee Prabhuram Seong Mu Jo Sang Heup Moon |
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| Affiliation: | aEnergy Storage Research Center, Korea Institute of Science and Technology, P.O. Box 131, Cheongyang, Seoul 130-650, Republic of Korea;bOptoelectronic Materials Center, Korea Institute of Science and Technology, P.O. Box 131, Cheongyang, Seoul 130-650, Republic of Korea;cSchool of Chemical and Biological Engineering, and Institute of Chemical Processes, Seoul National University, San 56-1, Shillim-dong, Kwanak-ku, Seoul 151-744, Republic of Korea |
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| Abstract: | Branched carbon nanotubes (b-CNTs) were synthesized by carbonization of polyvinylidene fluoride (PVDF) fibers containing a Pt catalyst. The solid fibrous polymer converted into carbon nanotubes with simultaneous growth of branches on the surface of the tubes during carbonization. The Pt particles were expected to decompose PVDF polymer inside the tubes into volatile carbonaceous species leaving a hollow center, and also to act as catalytic sites for the growth of carbon branches. The resulting b-CNTs had a high degree of graphitization and a large electrochemical surface area, and also showed a possibility as a supporting material for electrocatalysts. |
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