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| Type |
Poster Presentation |
| Area |
Material Chemistry |
| Room No. |
Exhibition Hall 2 |
| Time |
4월 19일 (금요일) 11:00~12:30 |
| Code |
MAT.P-436 |
| Subject |
Synthesis of N-Doped Carbon-Coated Cobalt Oxide from MOF as an Anode Material for Li-Ion Batteries |
| Authors |
SeonTae Kim, Jongsik Kim*
Department of Chemistry, Dong-A University, Korea
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| Abstract |
Lithium-ion batteries (LIBs) have been widely used as energy storage materials in various electronic devices due to high energy density, long life cycle, and light of weight. However, graphite as a commercial anode material for LIBs has a problem such as low theoretical capacity (372 mAh g-1). Recently, cobalt (II, III) oxide (Co3O4) is considered as an alternative anode material for high-performance LIBs because of its high theoretical capacity (890 mAh g-1). However, Co3O4 anode materials suffer from low conductivity and poor cycle life due to structural strain and huge volume change during lithiation/delithiation processes. In this work, N-doped carbon embedded porous Co3O4 nanoparticles (Co3O4/NC) were synthesized by using Zn and Co metal-organic frameworks templates (ZIF-8@ZIF-67) and dopamine as a nitrogen and carbon source. During the synthesis, Zn species was evaporated to form the structural pores, and the in situ formed Co(0) catalyzed the graphitization of N-doped carbon matrix and transformed to Co3O4. The Co3O4/NC exhibited the improved discharge capacity of about 1177 mAh g-1 at 0.1 C rate after 50 cycles in voltage ranges of 0.01-3.0 V, which is superior to that of bare Co3O4 (719 mAh g-1). |
| E-mail |
geekazoid951@gmail.com |
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123rd General Meeting of the KCS