Lithium Metal Anode Stability in Energy Storage Systems

Lithium metal anodes offer the highest theoretical specific capacity and lowest electrochemical potential of any anode material, promising transformative gains in energy density for portable electronics, electric vehicles and grid storage. Yet their practical deployment is constrained by uncontrolled dendrite growth, continual electrolyte decomposition and dramatic volume changes during cycling. These phenomena lead to poor Coulombic efficiency, rapid capacity fade and safety hazards from short circuits. Research efforts have therefore focused on tailoring interfacial chemistry, engineering robust solid electrolyte interphases and designing three-dimensional host structures to regulate lithium plating and stripping. Strategies such as artificial protective layers, high‐concentration or hybrid electrolytes, and functional additives aim to suppress dendrite nucleation, stabilise interfacial layers and accommodate volume variations. Recent advances have demonstrated ambient-stable anodes, novel polymeric or inorganic interlayers and sustained-release additive systems that together advance the prospect of long-life, dendrite-free lithium metal batteries. Continued integration of materials innovation, interfacial science and cell engineering is essential to unlock the full potential of lithium metal anodes in next-generation energy storage.

Research from Nature Portfolio

One study introduced a hydrophobic artificial interphase on lithium foil, enabling ambient-air handling and the formation of a stable solid electrolyte interphase. This treatment yields dendrite-free lithium deposition from conventional carbonate electrolytes, improves cycle life by eliminating unstable additives and reduces fabrication costs for large-format cells. Another investigation developed a one-step, tin-containing electrolyte treatment that forms a fluorinated hybrid interphase composed of lithium fluoride, metallic tin and tin-lithium alloys. This layer facilitates fast ion transport, inhibits dendrite formation and supports extended plating/stripping cycles with enhanced rate capability. A further work employed a solubility-mediated sustained-release approach for nitrate additives in carbonate electrolytes: encapsulated nitrate nanoparticles dissolve steadily at the plating front, directing lithium nuclei toward spherical growth, reinforcing the interphase and markedly boosting cycling stability under practical conditions.

Lithium Metal Anode Stability in Energy Storage Systems publication trend

The graph below shows the total number of articles in lithium metal anode stability in energy storage systems across all publications each year (not limited to Nature Index journals).

Technical terms

Dendrite: Needle-like lithium deposits that form during plating and can penetrate the separator, causing short circuits and safety risks.

Solid electrolyte interphase (SEI): A passivation layer on the lithium surface formed by controlled electrolyte decomposition, which governs ion transport and protects the anode from further side reactions.

Coulombic efficiency: The ratio of discharge capacity to charge capacity in a cycle, reflecting the reversibility of lithium plating and stripping processes.

References

1. Lithium anode stable in air for low-cost fabrication of a dendrite-free lithium battery. Nature Communications (2019).
2. Solubility-mediated sustained release enabling nitrate additive in carbonate electrolytes for stable lithium metal anode. Nature Communications (2018).
3. In Situ Formed Tribofilms as Efficient Organic/Inorganic Hybrid Interlayers for Stabilizing Lithium Metal Anodes. Nano-Micro Letters (2023).
4. Advanced Micro/Nanostructures for Lithium Metal Anodes. Advanced Science (2017).
5. Fluorinated hybrid solid-electrolyte-interphase for dendrite-free lithium deposition. Nature Communications (2020).