全固态电池界面的研究进展  

Research Progress on Interfaces of All-Solid-State Batteries

作　　者：王晗 安汉文 单红梅 赵雷 王家钧 Han Wang;Hanwen An;Hongmei Shan;Lei Zhao;Jiajun Wang(School of Chemistry and Chemical Engineering,Harbin Institute of Technology,Harbin 150000,China;College of Materials Science and Chemical Engineering,Harbin Engineering University,Harbin 150000,China)

机构地区：[1]哈尔滨工业大学化工与化学学院,哈尔滨150000 [2]哈尔滨工程大学材料科学与化学工程学院,哈尔滨150000

出　　处：《物理化学学报》2021年第11期35-48,共14页Acta Physico-Chimica Sinica

基　　金：国家自然科学基金(U1932205);黑龙江省自然科学基金(ZD2019B001)资助项目。

摘　　要：采用固态电解质代替有机电解液的全固态电池具有高能量密度和高安全性等优点,为下一代能量存储设备提供了一种很有发展前途的解决方案。然而,大多数固态电解质和电极活性物质间都存在严重的界面问题,制约固态电池的实际应用;解决固态电池中的固-固界面问题,提升固态电池电化学性能是目前的研究热点。本文详细总结了固态电池中的界面挑战、改善策略以及针对界面问题的表征方法,并展望了固态电池今后发展中的关键方向和趋势。Owing to the serious energy crisis and environmental problems caused by fossil energy consumption, development of high-energy-density batteries is becoming increasingly significant to satisfy the rapidly growing social demands. Lithium-ion batteries have received widespread attention because of their high energy densities and environmental friendliness. At present, they are widely used in portable electronic devices and electric vehicles. However, security aspects need to be addressed urgently. Substantial advances in liquid electrolyte-based lithium-ion batteries have become a performance bottleneck in the recent years. Traditional lithium-ion batteries use organic liquids as electrolytes, but the flammability and corrosion of these electrolytes considerably limit their development. Continuous growth of lithium dendrites can pierce the separator, leading to electrolyte leakage and combustion, which is a serious safety hazard. Replacement of organic electrolytes with solid-state electrolytes is one of the promising solutions for the development of next-generation energy storage devices, because they have high energy densities and are safe. Solid electrolytes can remarkably alleviate the safety hazards involved in the use of traditional liquid-based lithium-ion batteries. In addition, the composite of solid-state electrolytes and lithium metal is expected to result in a higher energy density. However, due to the lack of fluidity of the solid electrolytes, problems such as limited solid-solid contact area and increased impedance at the interface when solid-state electrolytes are in contact with electrodes must be solved. The localized and buried interface is a major drawback that restricts the electrochemical performance and practical applications of the solid-state batteries. Fabrication of a stable interface between the electrodes and solid-state electrolyte is the main challenge in the development of solid-state lithium metal batteries. All these aspects are critical to the electrochemical performance and safety

关 键 词：全固态电池 固体电解质 界面 稳定性 界面修饰 表征方法 

分 类 号：O646[理学—物理化学]