Strategies to Enable Reversible Magnesium Electrochemistry: From Electrolytes to Artificial Solid-Electrolyte...

Area of Science:

• Electrochemistry
• Materials Science
• Energy Storage

Background:

• Rechargeable magnesium (Mg) batteries have garnered significant interest due to their potential for low cost and high volumetric energy density.
• However, Mg-metal anode incompatibility with conventional carbonate electrolytes has hindered development.
• Existing research often involves trade-offs between electrolyte reduction stability and oxidation potential.

Purpose of the Study:

• To review the limitations in developing electrolytes for rechargeable magnesium batteries.
• To discuss strategies for designing artificial solid-electrolyte interphases (SEI) for magnesium-ion batteries.
• To explore future perspectives in artificial interphase development for Mg batteries.

Main Methods:

• Literature review focusing on electrolyte limitations and artificial SEI strategies.
• Analysis of existing research on Mg/electrolyte incompatibility.
• Discussion of design principles for artificial interphases.

Main Results:

• Conventional electrolytes face challenges with Mg-metal anodes.
• Artificial SEI coatings offer a promising approach to mitigate Mg/electrolyte incompatibility.
• This strategy significantly expands the range of usable electrolytes for Mg batteries.

Conclusions:

• Artificial interphases are crucial for overcoming the inherent limitations of Mg-metal anodes in rechargeable batteries.
• Effective SEI design can unlock the full potential of magnesium batteries.
• Further research into artificial interphases is vital for advancing magnesium-ion battery technology.