| 학회 |
한국화학공학회 |
| 학술대회 |
2015년 가을 (10/21 ~ 10/23, 일산 KINTEX) |
| 권호 |
21권 2호, p.2055 |
| 발표분야 |
재료 |
| 제목 |
The direct deposition of thermally treated graphene oxide/TiO2 porous material on the coin cell anode for lithium-ion battery anode |
| 초록 |
The anatase-TiO2, it has been identified as the most promising anode material for lithium-ion batteries (LIB) due to its negligible volume change, and no solid electrolyte interface formation. Recently, the drawbacks of poor electronic conductivity and lower electrolyte diffusion of the TiO2 has been resolved by doping, or hybrid with carbon based materials. Herein, the thermally treated graphene oxide/TiO2 (TGO/TiO2) is prepared through the calcination of the poly (methylmethacrylate)-GO/TiO2 (PMMA-GO/TiO2) on the coin cell anode. The decomposition of PMMA increased the surface area of pristine TiO2 of 10.3 m2 g–1 to 182.3 m2 g–1 of TGO/TiO2. In LIB anode, the TGO/TiO2 porous electrode exhibited much higher specific capacity of 354 mAh g-1 at 0.2C than pristine TiO2 of 159.2 mAh g-1 and showed an excellent rate capabilities at all the C-rates. The higher specific capacity of TGO/TiO2 electrode can be attributed that the highly porous characteristics and their resulting pseudocapacitive effect of the nanocomposite electrode during the Li-ion insertion/extraction reactions. |
| 저자 |
정진석, 손혜정, 김병수, Balasubramaniyan
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| 소속 |
울산대 |
| 키워드 |
thermally treated graphene oxide; TiO2; coin cell; anode; lithium ion battery
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| E-Mail |
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| 원문파일 |
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