| 학회 |
한국재료학회 |
| 학술대회 |
2017년 가을 (11/15 ~ 11/17, 경주 현대호텔) |
| 권호 |
23권 2호 |
| 발표분야 |
C. 에너지 재료 분과 |
| 제목 |
Microstructure, Mechanical Properties and Modeling of Oxidized Cobalt Foam for Potential Use in Li-Ion Batteries |
| 초록 |
The integrated porous Co oxide/Co anode was prepared by facile processes including ice-templating and thermal-oxidation for use as high-capacity anode material of lithium-ion battery. The three-dimensional Co foam with elongated, aligned micropores was synthesized by an ice-templating process. Subsequently, it was heat-treated in order to form cobalt oxide material with nano-structure on the surface of the Co foam. In this electrode design, the hierarchical three-dimensional Co foam was used as current collector and nanowall-like cobalt oxide layer acted as anode that reacts with lithium ions during discharging and charging. The integrated porous Co oxide/Co anode exhibits highly reversible capacity of 989 mAhg-1 even after 50 cycles with an initial coulombic efficiency of 99.4%, which is much higher than that of the conventional cobalt foil anode (245 mAhg-1). The integrated porous cobalt oxide/cobalt anode, which was fabricated in this study, has promising potential applications as a self-supporting advanced anode architecture with high capacity for lithium-ion battery. |
| 저자 |
박혜지1, 김경배1, 강진수2, 조훈휘3, 김재헌1, 성영은2, David. C. Dunand4, 최희만1
|
| 소속 |
1국민대, 2서울대, 3한밭대, 4Northwestern Univ. |
| 키워드 |
Cobalt foam; ice-templating; cobalt oxide anode; thermal oxidation; lithium ion battery
|
| E-Mail |
|
