Prussian Blue Analogs for Rechargeable Batteries.

Area of Science:

• Materials Science
• Electrochemistry
• Energy Storage

Background:

• Lithium resources are insufficient and unevenly distributed, driving research into non-lithium energy storage.
• Prussian blue analogs (PBAs), known since the 18th century, have diverse applications beyond energy storage.
• PBAs offer high theoretical specific capacity, facile synthesis, and low cost, making them attractive for energy storage.

Purpose of the Study:

• To provide a comprehensive summary and evaluation of Prussian blue analogs (PBAs) for rechargeable battery applications.
• To discuss the history, structure, synthesis, and working principles of PBAs in rechargeable batteries.
• To analyze previous research based on cation and transition metal combinations in PBAs for electrochemical energy storage.

Main Methods:

• Literature review and analysis of existing research on Prussian blue analogs (PBAs).
• Classification of previous works based on insertion cations and transition metals.
• Evaluation of PBA properties relevant to rechargeable battery performance.

Main Results:

• PBAs exhibit significant potential for use in sodium-ion batteries and other rechargeable energy storage systems.
• The review comprehensively analyzes various PBA compositions and their performance metrics.
• PBAs are highlighted for their cost-effectiveness and synthetic accessibility.

Conclusions:

• Prussian blue analogs are a promising class of materials for next-generation rechargeable batteries, particularly sodium-ion systems.
• Further research and development are needed to optimize PBAs for enhanced electrochemical energy storage.
• PBAs represent a viable alternative to lithium-based battery technologies.