| 학회 |
한국공업화학회 |
| 학술대회 |
2014년 가을 (11/12 ~ 11/14, 엑스코(대구)) |
| 권호 |
18권 2호 |
| 발표분야 |
(전기화학)에너지변환/저장을 위한 전기화학적 원리 |
| 제목 |
이차전지용 전이금속산화물 전극의 반응기구에 대한 연구 |
| 초록 |
Graphitic carbon is widely used as anode material due to its low cost, good cycle life, and very stable capacity in most commercial lithium-ion batteries (LIBs). However, capacity of carbon anode (372mAh/g and 830mAh/mL) is limited by the reversible electrochemical intercalation of lithium ions in its structure. So, the search of new anode material has been ongoing to achieve the higher capacity. SnO2 has been widely studied in the last decade as one of the potential candidates for anode materials due to its higher specific lithium storage capacity (783mAh/g). But, its poor capacity retention over long-term charge-discharge cycling has prevented its use as commercial anode material in LIBs. This problem has been associated with its alloying reaction which results in large volume changes of electrode material during electrochemical cycling. In this work, we studied mesoporous SnO2 electrode material with abnormal capacity. Mesoporous SnO2 was synthesized by sol-gel method by using the KIT-6 template. Abnormal capacity associated with new reaction mechanism was elucidated by using synchrotron-based X-ray techniques. These results will give a new insight to design novel high energy electrode materials for advanced lithium rechargeable batteries. |
| 저자 |
김현철1, 김윤옥1, Shoaib Muhammad1, 유재승1, 박기옥1, Mahalingam Balasubramanian2, 김지만1, 윤원섭1
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| 소속 |
1성균관대, 2Argonne National Laboratory |
| 키워드 |
이차전지; 메조구조; 음극소재; 반응기구
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| E-Mail |
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