| 초록 |
An all-solid-state battery with a lithium metal anode is a strong candidate for surpassing conventional lithium-ion battery capabilities. However, undesirable Li dendrite growth and low Coulombic efficiency impede their practical application. We have found that a silver-carbon nanocomposite anode layer, when employed in combination with solid electrolyte, prohibits the dendrite formation and allows the homogeneous Li metal plating and stripping on the surface of current collector. The high Coulombic efficiency thus achieved also eliminates the need of excessive Li metal, further increasing the cell energy density and decreasing the production cost. Consequently, the nanocomposite anode formed on a current collector can offer high energy density (＞900 Wh/L) and long cycle life (＞1,000 times) in the solid-state batteries (0.6 Ah prototype pouch cell). |
