Combination of Organic and Inorganic Electrolytes for Composite Membranes Toward Applicable Solid Li

• 作 者: MU Shuang BI Zhijie GAO Shenghan GUO Xiangxin
• 机 构: College of Physics,Qingdao University,Qingdao 266071,P.R.China
• 出 处: 高等学校化学研究（英文版）
• 发表日期: 2021年2期
• 关键词: Composite electrolyte Solid-state lithium battery Energy density Security

To meet the demand for long-range electric vehicles with high-energy-density batteries,the solid-state batteries(SSBs)have attracted ever-increasing attention due to their enormous po-tential in affording the energy density greater than 400 W·h/kg.As the key materials,the solid electrolytes can be classified as inorganic electrolyte and organic electrolyte.The former usually has high ionic conductivity,good stability and mechanical properties,whereas being heavy and brittle.The latter is usually flexible,light and easy to mass produce,nevertheless has poor ionic conductivity and sta-bility.Thus,the combination of the organic and the inorganic elec-trolytes for the composite membranes has become the inevitable trend to achieve the high energy density and safety of lithium bat-teries.From the perspective of practical application,this paper dis-cusses how to construct the ideal organic-inorganic composite solid electrolyte with low areal specific resistance,thin texture,wide elec-trochemical window and high safety for applicable SSBs.Further-more,the critical challenges and future development directions are prospected for the composite solid electrolytes.