Solid-state batteries

as next-generation power battery technology

have become a focal point in the global new energy vehicle industry competition due to their advantages of high energy density

safety

and a wide operating temperature range. This paper systematically reviews global research progress in solid-state batteries from 2018 to 2023

employing a four-dimensional analytical framework encompassing materials

interfaces

manufacturing processes

and systems. Utilizing bibliometric analysis

comparative analysis

and case studies

it focuses on breakthroughs in the performance of sulfide

oxide

and polymer electrolyte materials; recent advances in interface engineering; and innovations in large-scale manufacturing processes. Research findings indicate that while significant breakthroughs have been achieved in fundamental research

solid-state batteries still face industrialization bottlenecks such as material environmental sensitivity

interfacial contact failure

and low manufacturing yield. This study proposes a multi-field coupled theoretical model integrating "interfacial chemistry-mechanical stress-electrochemical performance" and constructs a convergent development pathway combining "material genome engineering + intelligent preparation + full life cycle management

" providing theoretical foundations and policy recommendations for China's solid-state battery industry development.