➀ Researchers have developed a cathode homogenization strategy for all-solid-state lithium batteries, using a zero-strain material to enhance energy density and cycle life. ➁ This new approach eliminates the need for inactive additives, resulting in a more efficient and stable battery with over 20,000 cycles and high energy density. ➂ The material's stability and performance make it a strong candidate for commercial applications in electric vehicles and large-scale energy storage systems.