SINOLINK SECURITIES·2025-08-19 03:08Investment Rating - The report suggests a positive investment outlook for the solid-state battery industry, highlighting its advantages over traditional liquid batteries and the rapid development of related materials [3][11][20]. Core Insights - Solid-state batteries outperform liquid batteries in safety, energy density, and integration, with manufacturers and battery producers rapidly positioning themselves to support material demand [1][11]. - The core of solid-state lithium battery technology is the solid electrolyte, with sulfide and oxide being the mainstream technological routes [2][34]. - The report emphasizes the potential of sulfide electrolytes due to their superior ionic conductivity and mechanical properties, while also noting the stability and industrial progress of oxide electrolytes [3][27][36]. Summary by Sections 1. Solid-State Batteries: Performance Advantages and Accelerated Layout - Solid-state batteries are expected to emerge due to their high energy density and safety, effectively addressing issues like lithium dendrite growth [11][12]. - The transition from liquid to solid-state batteries simplifies construction by eliminating the need for separators, thus reducing costs [12][27]. 2. Solid Electrolytes: Core of Solid-State Lithium Battery Technology - Solid electrolytes are classified into sulfide, oxide, polymer, and halide types, with the choice of materials being crucial for large-scale production [27][34]. - Sulfide electrolytes exhibit high ionic conductivity and good mechanical properties, making them a promising candidate for commercialization despite challenges like air stability and high production costs [36][41]. 3. Investment Recommendations - As the solid-state battery industry matures, upstream core materials will benefit significantly. Companies that are early adopters of lithium sulfide and have technological advantages are recommended for investment [3][41]. - The report forecasts that by 2027, the shipment of solid-state batteries in China will reach approximately 18 GWh, with a compound annual growth rate of 44% from 2024 to 2028 [20][22].