Reassessing Electrolyte Design for Non-Aqueous Magnesium Batteries: Atomistic Structures and Performance...

Area of Science:

• Materials Science
• Electrochemistry
• Energy Storage

Background:

• Non-aqueous magnesium (Mg) batteries offer high Mg abundance and safety, positioning them as a promising energy storage technology.
• The practical application of Mg batteries is significantly hindered by the lack of efficient non-aqueous electrolytes.
• Electrolyte development is critical for overcoming current limitations and enabling widespread Mg battery adoption.

Purpose of the Study:

• To provide a comprehensive review of recent advancements in non-aqueous electrolytes for Mg batteries.
• To analyze the challenges and future directions for both chlorine-containing and chlorine-free electrolyte systems.
• To evaluate the influence of electrolyte design on Mg stripping/plating processes and electrochemical stability.

Main Methods:

• Literature review and analysis of existing research on non-aqueous electrolytes for Mg batteries.
• Comparative evaluation of chlorine-containing and chlorine-free electrolyte systems.
• Discussion of electrolyte design strategies, atomistic structures, and performance optimization.

Main Results:

• Chlorine-containing electrolytes show high ionic conductivity and reversibility but face issues with corrosion and limited electrochemical stability.
• Chlorine-free electrolytes present an eco-friendly alternative but often exhibit lower ionic conductivity and poor compatibility with Mg metal anodes.
• Both electrolyte types present distinct advantages and disadvantages impacting Mg battery performance.

Conclusions:

• Electrolyte innovation is pivotal for unlocking the full potential of non-aqueous Mg batteries.
• Addressing challenges in Mg anode compatibility and electrochemical stability is crucial for both electrolyte types.
• Further research into advanced electrolyte design methodologies is essential for sustainable and high-performance energy storage solutions.