In addition to silicon, lithium metal anodes are also promising as they boast similarly high specific energies. 72 They also have the lowest possible working voltage from all anodes, hence the highest cell voltages. However, its major limitations include dendrite formation, "dead" lithium, and chemical corrosion via reaction with organic liquid electrolytes. These operational challenges can be addressed by using solid-state electrolytes (SSEs) as they are mechanically stiff and chemically inert. Additionally, solid-state electrolytes also serve as separators for the cell which further improves the energy density. Solid-state batteries with lithium-metal anodes have the potential to reach energy densities greater than 500 Wh/kg. The review by Janek and Zeier 73 identifies the need for high-stack pressure, lack of high effective ionic conductivity of SSEs, and inability to maintain long-term stable and low-resistance interfaces to be the major roadblocks. However, it also highlights a path forward and proposes research directions to systematically solve these issues. With academics and companies such as Samsung, Solid Power, QuantumScape, and Toyota working on developing solid-state batteries, it is likely to emerge as a promising candidate for commercial applications.