전고체 이차전지용 음극 소재의 개발 동향
Development of Negative Electrode Materials for All-Solid-State Batteries
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Rechargeable lithium-ion batteries have rapidly evolved, driven by their widespread use in portable elec- tronic devices, electric vehicles, and large-scale energy storage systems. As the demand for higher energy density and improved safety increases, interest in next-generation batteries, particularly all-solid-state bat- teries (ASSBs), has surged. ASSBs replace the flammable liquid electrolytes found in conventional lith- ium-ion batteries with inorganic solid electrolytes, significantly enhancing safety. Additionally, they allow for the use of high-capacity electrode materials, which boosts the overall energy density of the battery sys- tem. Ongoing research focuses on developing suitable solid electrolytes, anodes, and cathodes for ASSB applications. While graphite is commonly used as the anode material in traditional lithium-ion batteries, high-capacity materials such as lithium metal and silicon are being actively explored for ASSBs. Research into anode-free battery systems is also progressing concurrently. This review aims to provide a compre- hensive overview of various anode materials, discussing their characteristics, classifications, current devel- opment status, and exploring future directions for their advancement.
Abstract
Rechargeable lithium-ion batteries have rapidly evolved, driven by their widespread use in portable elec- tronic devices, electric vehicles, and large-scale energy storage systems. As the demand for higher energy density and improved safety increases, interest in next-generation batteries, particularly all-solid-state bat- teries (ASSBs), has surged. ASSBs replace the flammable liquid electrolytes found in conventional lith- ium-ion batteries with inorganic solid electrolytes, significantly enhancing safety. Additionally, they allow for the use of high-capacity electrode materials, which boosts the overall energy density of the battery sys- tem. Ongoing research focuses on developing suitable solid electrolytes, anodes, and cathodes for ASSB applications. While graphite is commonly used as the anode material in traditional lithium-ion batteries, high-capacity materials such as lithium metal and silicon are being actively explored for ASSBs. Research into anode-free battery systems is also progressing concurrently. This review aims to provide a compre- hensive overview of various anode materials, discussing their characteristics, classifications, current devel- opment status, and exploring future directions for their advancement.