Carbonaceous Nanosheets for Sodium Metal Anodes: Engineering Interphases and Deposition Frameworks

Area of Science:

• Materials Science
• Electrochemistry
• Energy Storage

Background:

• Sodium metal anodes (SMAs) are promising for next-generation energy storage due to high capacity and low potential.
• Key challenges include unstable solid electrolyte interphase (SEI), dead sodium formation, and dendrite growth, limiting performance and safety.

Purpose of the Study:

• To review the fundamental challenges of SMAs.
• To summarize the application of 2D carbon-based materials in stabilizing SMAs.
• To explore future opportunities for high-performance SMAs.

Main Methods:

• Review of existing literature on sodium metal anodes and 2D carbon materials.
• Analysis of 2D carbon materials as independent supportive membranes (ISMs) and sodium-affinitive deposition substrates.
• Discussion of strategies for interfacial stabilization and deposition framework design.

Main Results:

• 2D carbon materials enhance interfacial stability and regulate sodium deposition.
• Applications include independent supportive membranes and sodium-affinitive deposition substrates.
• These materials improve Coulombic efficiency, cycle life, and safety of SMAs.

Conclusions:

• 2D carbon materials are effective in addressing critical challenges in SMAs.
• Further research is needed to optimize their application for commercial viability.
• This review provides insights for developing advanced SMAs for energy storage systems.