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|
| Type |
Poster Presentation |
| Area |
Material Chemistry |
| Room No. |
Exhibition Hall 2+3 |
| Time |
10월 19일 (목요일) 11:00~12:30 |
| Code |
MAT.P-381 |
| Subject |
Synthesis of hollow nanostructured TiO2/graphene hybrid for anodic material in sodium-ion battery |
| Authors |
Won-Jae Lee, Seung-Min Paek*
Department of Chemistry, Kyungpook National University, Korea
|
| Abstract |
The titanium oxide (TiO2) has considered as an anodic material in a rechargeable battery due to its structural and electrochemical stability. However, TiO2 is hardly used in sodium ion battery because it has low electrical conductivity. Thus, in this study, the TiO2/graphene hybrid with spherical hollow structure was synthesized via layer-by-layer self restacking by electrostatic interaction onto soft polymer template. According to the electron microscopic studies, the obtained TiO2/graphene hollow spheres show that the products were formed with spherical hollow structure and their size was sub-micrometer. And in the energy dispersive spectroscopy results, the titanium and carbon atoms were homogeneously distributed in the final product. The FT-IR and Raman spectra show that the graphitic carbon was maintained in the TiO2/graphene hollow sphere. In the electrochemical impedance spectroscopy, the obtained products have higher electrical conductivity than the bulk TiO2. The half-cell tests for sodium ion battery show that the obtained TiO2/graphene hollow sphere has higher specific capacity and better cycling performance at various current rates than those of the bulk TiO2. The present TiO2/graphene hollow sphere could be used as anodic materials for sodium ion batteries with enhanced performance. |
| E-mail |
ddt1004m@nate.com |
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120th General Meeting of the KCS