A semi-solid-state battery is a next-generation energy storage solution that combines the best properties of traditional lithium-ion and fully solid-state batteries. It offers improved safety, higher energy density, and enhanced performance. . A semi-solid-state battery (also formally known as a quasi-solid-state battery, QSSB) is a type of rechargeable battery that serves as an intermediate technology between conventional lithium-ion batteries (LIB) with liquid electrolytes and all-solid-state batteries (ASSB) using a hybrid. . What are semi-solid-state batteries? Solid-state batteries represent a significant advancement in battery technology, offering various improvements over traditional lithium-ion batteries. As battery technology rapidly evolves, this hybrid design. . A solid-state battery is a device that turns chemical energy into electricity. Instead of using liquid or gel, it uses a solid material (solid electrolyte) to help lithium ions move between electrodes. These solid electrolytes are usually special compounds designed to allow ions to flow easily. . While liquid lithium-ion batteries continue to dominate, the semi-solid-state battery has emerged as a transitional technology, seeking to bridge the gap between liquid and all-solid-state batteries. However, this pathway is fraught with challenges, as the technology faces competition from both. . As industries like aerospace, electric vehicles (EVs), drones, and energy storage evolve, there's an increasing need for batteries that are not only more energy-dense but also safer and longer-lasting. Traditional lithium-ion batteries have their limitations in energy density 1, safety, and. .