화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Applied Chemistry for Engineering, Vol.23, No.4, 359-366, August, 2012
Export Citation
고출력ㆍ고에너지 밀도의 아연금속-공기전지
Rechargeable Zn-air Energy Storage Cells Providing High Power Density
박동원1, 김진원2, 이재광3, 이재영1, 4, †
  • 1광주과학기술원 솔라에너지연구소 에너지저장 연구실
  • 2광주과학기술원 환경공학부
  • 3광주과학기술원 Ertl 실용촉매연구센터
  • 4광주과학기술원 환경공학부, Ertl 실용촉매연구센터
Dong-Won Park1, Jin Won Kim2, Jae Kwang Lee3, and Jaeyoung Lee1, 4, †
  • 1Lab. for Energy Storage System, Research Institute for Solar & Sustainable Energies (RISE), Gwangju Institute of Science and Technology (GIST), Gwangju 500-712, Korea
  • 2School of Environmental Science and Engineering, Gwangju Institute of Science and Technology (GIST), Gwangju 500-712, Korea
  • 3Ertl center for Electrochemistry and Catalysis, Gwangju Institute of Science and Technology (GIST), Gwangju 500-712, Korea
  • 4School of Environmental Science and Engineering, Ertl center for Electrochemistry and Catalysis, Gwangju Institute of Science and Technology (GIST), Gwangju 500-712, Korea
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초록
아연금속-공기전지는 기존의 이차전지보다 높은 중량당 에너지 밀도, 낮은 제조단가를 가짐과 동시에 소재적으로 친환경적이다. 소형 및 중대형 전력 저장 시스템, 전기자동차, 스마트 휴대기기의 상용화에 있어 최우선시 되고 있는 것은 배터리의 충ㆍ방전 능이다. 따라서 환원 촉매의 높은 과전압, 산화 전극의 불안정성 및 비가역성, 액체 전해질 사용에 따른 여러 문제점을 해결하여야 한다. 본 총설에서는 공기극 막의 손상 방지 기술, 아연금속 전극의 구조 개선을 통한 충전효율 저하 방지 기술, 부반응 및 부동태화를 막기 위한 하이브리드 전해질 도입 등의 최근 기술적 이슈와 연구동향을 소개하고자 한다.
Zn-Air energy storage cell is an attractive type of batteries due to its theoretical gravimetric energy density, cost-effective structure and environmental-friendly characteristics. The chargeability is the most critical in various industrial applications such as smart portable device, electric vehicle, and power storage system. Thus, it is necessary to reduce large overpotential of oxygen reduction/evolution reaction, the irreversibility of Zn anode, and carbonation in alkaline electrolyte. In this review, we try to introduce recent studies and developments of bi-functional air cathode, enhanced charge efficiency via modification of Zn anode structure, and blocking side reactions applying hybrid organic-aqueous electrolyte for high power density rechargeable Zn-Air energy storage cells.
Keywords:Zn-air storage cells;bi-functional air cathode;nanostructured Zn anode;water management;hybrid electrolyte;reliable current collector
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