The article provides a comprehensive overview of the development and future prospects of lithium-ion batteries. It begins by celebrating the 25th anniversary of Sony Corporation's introduction of the lithium-ion rechargeable battery, highlighting the contributions of earlier researchers such as Asah Kasei and John B. Goodenough. The author discusses the key materials and processes involved in the early development of lithium-ion batteries, including the use of lower-temperature carbons for the negative electrode and lithium cobalt dioxide for the positive electrode. The article then delves into the advancements made in recent years, focusing on new materials and processes that have improved the cost, energy density, safety, and power capability of lithium-ion batteries. It mentions the use of silicon in graphite-based negative electrodes to enhance specific capacity and the development of ceramic coatings on separators to prevent internal short circuits. The article also discusses the challenges and potential solutions for improving battery performance, such as the use of alloy anodes and the optimization of electrolytes. Finally, the author concludes by emphasizing the bright future of lithium-ion batteries, driven by ongoing innovations in active materials, inert materials, and cell designs. The article highlights the importance of maintaining safe manufacturing practices and new designs to ensure the continued improvement and widespread adoption of lithium-ion batteries.The article provides a comprehensive overview of the development and future prospects of lithium-ion batteries. It begins by celebrating the 25th anniversary of Sony Corporation's introduction of the lithium-ion rechargeable battery, highlighting the contributions of earlier researchers such as Asah Kasei and John B. Goodenough. The author discusses the key materials and processes involved in the early development of lithium-ion batteries, including the use of lower-temperature carbons for the negative electrode and lithium cobalt dioxide for the positive electrode. The article then delves into the advancements made in recent years, focusing on new materials and processes that have improved the cost, energy density, safety, and power capability of lithium-ion batteries. It mentions the use of silicon in graphite-based negative electrodes to enhance specific capacity and the development of ceramic coatings on separators to prevent internal short circuits. The article also discusses the challenges and potential solutions for improving battery performance, such as the use of alloy anodes and the optimization of electrolytes. Finally, the author concludes by emphasizing the bright future of lithium-ion batteries, driven by ongoing innovations in active materials, inert materials, and cell designs. The article highlights the importance of maintaining safe manufacturing practices and new designs to ensure the continued improvement and widespread adoption of lithium-ion batteries.