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H2 sorption in HCl-treated polyaniline and polypyrrole |
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| Authors: | Sung June Cho Koyeon Choo Dong Pyo Kim Jong Won Kim |
| Affiliation: | aClean Energy Technology Laboratory, Center for Functional Nano Fine Chemicals (BK21 Program), Department of Applied Chemical Engineering, Chonnam National University, Yong Bong 300, Buk-gu, Gwang-ju 500-757, Republic of Korea bKorea Institute of Energy Research, 71-2, Jang-dong, Yusung-gu, Taejon 305-343, Republic of Korea cPolymer-derived Advanced Ceramic Materials Laboratory, Department of Fine Chemical Engineering & Chemistry, Chungnam National University, 220 Kung-dong, Yuseong-gu, Daejon 305-764, Republic of Korea |
| Abstract: | Hydrogen sorption in conducting polymers was investigated in order to determine their potential as hydrogen storage media. The conducting polymers, polyaniline and polypyrrole, were treated with an acid, which resulted in an exceptionally high hydrogen sorption, 6 and 8 wt% at room temperature and under 9.3 MPa. Both the molecular effect and electrical effects by the conducting polymers appear to play an important role in hydrogen sorption. This paper presents the preliminary results of hydrogen sorption in a conducting polymer along with its characterization by XRD, scanning electron microscopy, TGA, and conductivity measurement using a four-probe method. A possible mechanism for the extraordinarily high hydrogen storage is suggested. |
| Keywords: | Hydrogen storage Conducting polymer Polyaniline Polypyrrole |
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