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  • 09월 12일 17시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제110회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Magnesium Battery : Challenges & Opportunities

2012년 9월 5일 13시 34분 04초
MAT1-2 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
목 09시 : 35분
재료화학 - Next Generation Batteries
저자 및
대구경북과학기술원(DGIST) 에너지시스템공학, Korea
A prototype for a rechargeable magnesium battery was reported in 2000 by Aurbach group, which comprised a Chevrel phase MgxMo6S8 and thin Mg foil as the positive and the negative materials, respectively. The key to the success of the system was the electrolyte which enabled the reversible dissolution/deposition of magnesium from/onto the magnesium foil. But it has a limited electrochemical window of ~2V. The energy density of the cell was about 25% of the lithium ion batteries. However, the magnesium battery system has a potential to provide a comparable or even higher energy density than lithium ion batteries because, in principle, the magnesium anode and the positive materials could provide more than two times of capacities even with about one volt lower in the cell voltage. It could be possible only if higher energy density positive materials and electrolytes with wider electrochemical potentials are developed. During the last decade a lot of materials have been claimed to show reversible magnesium intercalation. However, many of the results are to be carefully examined again because of unknown side reactions occurring during the test, mainly due to the underdevelopment of proper electrolytes. No dramatic improvement in electrolytes has been made in terms of electrochemical window and versatility. At this symposium, a concrete analysis of the previously reported materials will be given, focused on positive materials. Some of new materials showing a reversible magnesium intercalation will be discussed, demonstrating a promising opportunities in this new field.