Recent Progress in Bi-Based Anodes for Magnesium Ion Batteries.

Area of Science:

• Materials Science
• Electrochemistry
• Energy Storage

Background:

• Rechargeable magnesium ion batteries (MIBs) offer advantages like abundant resources and high safety.
• A major challenge for MIBs is the incompatibility of magnesium metal anodes with conventional electrolytes, leading to passivation.
• Alloy-type anodes, particularly those based on bismuth (Bi), are explored as an alternative to Mg metal to circumvent these issues.

Purpose of the Study:

• To summarize the advantages, challenges, and recent progress of bismuth-based anodes in MIBs.
• To provide a comprehensive overview of Bi-based anode development for improved magnesium storage.

Main Methods:

• Review and discussion of theoretical evaluations for Bi-based materials.
• Analysis of battery configurations, electrode designs, and electrochemical properties.
• Examination of magnesium storage mechanisms in Bi-based systems.

Main Results:

• Bismuth exhibits significant potential for magnesium storage due to its unique characteristics.
• Bi-based anodes offer a viable strategy to overcome the passivation issues associated with Mg metal anodes.
• The review covers key aspects including theoretical limits, practical battery designs, and performance metrics.

Conclusions:

• Bi-based anodes represent a promising direction for advancing rechargeable magnesium ion battery technology.
• Further research is needed to address key challenges and optimize Bi-based anode performance for practical applications.
• This work provides insights into future development strategies for Bi-based anodes in MIBs.