Chemistry: Anode

Lithium Metal Anode Basic Technology And Information

Strength

Weakness

Opportunity

Threat

High energy density

Lightweight

Enables other advanced battery chemistries, such as solid-state and lithium-sulfur

Limited cycle life

Cost (higher)

Low Coulombic efficiency

Manufacturability of lithium metal

Safety (dendrite formation and high reactivity)

Demand for high energy density batteries

Aerospace

High-end automotive

Defense-related applications (drones)

Advancements in solid-state technology

Competition from other technologies NMC/silicon batteries) and next gen chemistries such as metal-air or lithium sulfur

Safety regulations

Increasing lithium costs and supply chain concerns

Source: Lithium Metal Anodes in Solid-State Batteries, high safety Li-metal anodes, safer lithium metal batteries, Battery Report 2023 (pg 140142

Lithium metal anodes offer extremely high energy density due to lithium's low weight and high theoretical capacity. However lithium metal technology faces major challenges, primarily related to safety. Lithium metal anodes are prone to dendrite formation during charging, which can cause short circuits, thermal runaway, and fires. Additionally, their reactivity with electrolytes can reduce cycle life and efficiency. Compared to traditional graphite anodes used in lithium-ion batteries, lithium metal anodes can theoretically delivery much higher capacity but are significantly less stable and more challenging to commercialize. When compared to silicon anodes, lithium metal offers higher capacity but lags in safety and durability. In contrast to lithium-sulfur batteries, which may use lithium metal anodes, these batteries share similar safety concerns but can provide lower production costs and weight advantages. Many companies are working or have worked to mitigate the safety challenges inherent to lithium metal anodes, using techniques such as solid state materials, electrolyte design, protective coatings, and dendrite suppression.

Extracted from the PDF; charts and images may read imperfectly.