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| Type |
Poster Presentation |
| Area |
Electrochemistry |
| Room No. |
Exhibition Hall 2+3 |
| Time |
10월 20일 (금요일) 13:00~14:30 |
| Code |
ELEC.P-490 |
| Subject |
Enhanced Electrochemical Performances of the Li3VO4 with Surface Nitrogen-Doped Carbon Coating Thin Layers for Lithium-Ion Batteries |
| Authors |
Hansol Park, Jongsik Kim*
Department of Chemistry, Dong-A University, Korea
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| Abstract |
Lithium vanadate (Li3VO4) has been recently reported as a promising anode material for lithium-ion batteries (LIBs) because of its relative high capacity (394 mAh g-1) than graphite (372 mAh g-1), small volume changes, and low cost. However, Li3VO4 (LVO) suffer from poor rate capabilities owing to its low electrical conductivity. In this study, nitrogen-doped carbon coated Li3VO4 (NC-LVO) was synthesized with dopamine (DA) as carbon source by a facile hydrothermal method and subsequent thermal treatments. Remarkably, the thickness of nitrogen-doped carbon coating layers could be controlled by simply adjusting the coating time using polydopamine (PDA). The NC-LVO sample exhibited the enhanced reversible capacity of about 426 mAh g-1 during 100 cycles at 0.5 C rate (1 C = 394 mA g-1) in the voltage ranges of 0.01-3.0 V. Moreover, the NC-LVO also showed the improved rate capabilities at various current densities (0.1-20 C). The diffusion constants of the pristine LVO and NC-LVO electrodes were also analyzed by cyclic voltammetry (CV) measurements. |
| E-mail |
parkhs930622@gmail.com |
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120th General Meeting of the KCS