This paper reviews the current state of solid-state batteries (SSBs), focusing on electrolyte and electrode materials, as well as global market trends and key industry players. SSBs offer enhanced safety, energy density, and lifespan compared to traditional lithium-ion batteries (LIBs). The review highlights three main types of solid electrolytes: inorganic, organic, and composite solid electrolytes. Inorganic electrolytes, such as lithium aluminum titanium phosphate (LATP), excel in ionic conductivity and thermal stability but are mechanically fragile. Organic electrolytes, like polyethylene oxide (PEO) and polyvinylidene fluoride (PVDF), offer flexibility but have lower ionic conductivity. Composite electrolytes combine the advantages of both inorganic and organic materials, enhancing mechanical strength and ionic conductivity. Despite significant advances, challenges remain in synthesis and material stability. The global SSB production capacity is currently below 2 GWh, but it is projected to grow at a 118% compound annual growth rate by 2035, with the potential market size exceeding 42 billion euros. The paper also discusses the application of SSBs in various sectors, including transportation (e.g., electric vehicles) and aerospace, highlighting their benefits in terms of safety, energy density, and performance. Key players in the SSB industry, such as Toyota, Honda, Nissan, Ford, BMW, and Volkswagen, are actively pursuing SSB development for electric vehicles. Additionally, the review covers the challenges and opportunities in electrode materials, particularly for anodes and cathodes, emphasizing the importance of materials that can improve energy density, stability, and safety.This paper reviews the current state of solid-state batteries (SSBs), focusing on electrolyte and electrode materials, as well as global market trends and key industry players. SSBs offer enhanced safety, energy density, and lifespan compared to traditional lithium-ion batteries (LIBs). The review highlights three main types of solid electrolytes: inorganic, organic, and composite solid electrolytes. Inorganic electrolytes, such as lithium aluminum titanium phosphate (LATP), excel in ionic conductivity and thermal stability but are mechanically fragile. Organic electrolytes, like polyethylene oxide (PEO) and polyvinylidene fluoride (PVDF), offer flexibility but have lower ionic conductivity. Composite electrolytes combine the advantages of both inorganic and organic materials, enhancing mechanical strength and ionic conductivity. Despite significant advances, challenges remain in synthesis and material stability. The global SSB production capacity is currently below 2 GWh, but it is projected to grow at a 118% compound annual growth rate by 2035, with the potential market size exceeding 42 billion euros. The paper also discusses the application of SSBs in various sectors, including transportation (e.g., electric vehicles) and aerospace, highlighting their benefits in terms of safety, energy density, and performance. Key players in the SSB industry, such as Toyota, Honda, Nissan, Ford, BMW, and Volkswagen, are actively pursuing SSB development for electric vehicles. Additionally, the review covers the challenges and opportunities in electrode materials, particularly for anodes and cathodes, emphasizing the importance of materials that can improve energy density, stability, and safety.