Recent Advances in Electrode Design for Rechargeable Zinc-Air Batteries

Area of Science:

• Energy Storage and Conversion
• Electrochemistry
• Materials Science

Background:

• Rechargeable zinc-air batteries (ZABs) are promising due to their environmental friendliness, low cost, high energy density, and security.
• Key challenges include dendrite growth, anode corrosion, sluggish kinetics, and cathode material degradation, hindering large-scale application.

Purpose of the Study:

• To provide a comprehensive overview of the fundamental principles of ZABs.
• To analyze the electrochemical aspects of metal anodes and air cathodes in ZABs.
• To offer guidelines for designing high-performance, cost-effective ZAB electrodes.

Main Methods:

• Review of fundamental principles of ZABs.
• Comparative analysis of recent advancements in metal anode and air cathode research.
• Discussion of electrochemical challenges and solutions.

Main Results:

• Identification of critical issues in ZAB electrode performance, including dendrite formation and reaction kinetics.
• Evaluation of current strategies for improving anode stability and cathode activity.
• Highlighting the importance of material selection and electrode architecture.

Conclusions:

• Electrode design is crucial for overcoming ZAB limitations.
• Further research is needed to enhance bifunctionality and reduce reliance on platinum group metals.
• Optimized electrode design will pave the way for practical, high-performance ZABs.