| 학회 |
한국고분자학회 |
| 학술대회 |
2015년 가을 (10/06 ~ 10/08, 대구컨벤션센터(EXCO)) |
| 권호 |
40권 2호 |
| 발표분야 |
전극소재 및 에너지 소재용 멤브레인 |
| 제목 |
The improvement of electrochemical performance of lithium manganese spinel oxide in the elevated temperature by the addition of HF scavenging responsive polymer |
| 초록 |
Spinel-type lithium manganese oxide is a promising cathode material for power sources needed for electric vehicles and commercial energy storage systems due to its high rate performance and eco-friendliness and cost-effectiveness. However, this material suffers from a significant capacity fading in the cycling at the elevated temperature due to the manganese dissolution and the formation of unstable John-Teller Mn3+ ions. It is now well-recognized that manganese dissolution is catalyzed by a trace amount of water and HF present in the electrolyte. In this study, we developed a simple wet process to apply a thin polymer membrane coating on the electrode which can play as HF scavengers and thus improve the performance. We will present a series of evidences for functioning of this polymer membrane and analyze the effect on the performance. |
| 저자 |
이해리1, 임태은2, 오시형1
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| 소속 |
1한국과학기술(연), 2전자부품(연) |
| 키워드 |
lithium manganese oxide; spinel; manganese dissolution; HF scavenging
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| E-Mail |
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