全固态电池生产工艺分析

A Review on Production Strategy for All-Solid-State Batteries

由于液态锂离子电池中电解液存在易燃易爆的问题,很难从根本上同时保证电池的高能量密度和高安全性。因此,通过固体电解质取代有机电解液的全固态电池有望成为目前市场上锂离子电池最安全的替代品。目前,全固态电池的研究大多集中在以下方面:提高固体电解质的离子电导率、优化界面和提高稳定性,对全固态电池的规模化生产工艺和批量化制造方面的研究较少。全固态电池想要真正市场化应用,必须将实验室研究与工业化制造相结合。从工艺角度阐述固体电解质可行的成膜方法,以及全固态电池的制备工艺,可以为后续大尺寸全固态电池的规模化生产提供指导。

It is difficult to fundamentally guarantee high energy density and high safety at the same time, since the liquid electrolyte in lithium-ion batteries has problems such as flammability and explosiveness. Therefore, all-solid-state batteries that replace organic electrolytes with solid-state electrolytes are expected to be the safest alternatives to lithiumion batteries in the market. At present, the research of all-solid-state batteries mostly focuses on improving the ionic conductivity of solid electrolytes, optimizing the interface, and improving stability, however, few studies have attempted the large-scale production process and mass production of all-solid-state batteries. If all-solid-state batteries are willing to be truly market-oriented, laboratory research must be combined with industrial manufacturing. This paper introduces in detail the feasible film forming methods of solid electrolytes and the preparation process of all-solid-state batteries from the perspective of process, providing guidance for the subsequent mass production of large-size all-solid-state batteries.