Recent advances in rational design for high-performance potassium-ion batteries

Area of Science:

• Materials Science
• Electrochemistry
• Energy Storage

Background:

• Growing global energy demand requires advanced renewable energy solutions and efficient energy storage systems (EES).
• Lithium-ion batteries (LIBs) face sustainability challenges due to resource limitations and cost.
• Potassium-ion batteries (PIBs) are emerging as a viable alternative, utilizing abundant and low-cost potassium resources.

Purpose of the Study:

• To provide a comprehensive review of the current research status and fundamental principles of potassium-ion batteries (PIBs).
• To explore the potential of PIBs as a sustainable alternative for large-scale energy storage applications.
• To highlight key research areas and future directions for high-efficiency PIBs.

Main Methods:

• Review of fundamental principles and structural regulation in PIBs.
• Analysis of research on cathode materials, anode materials, electrolytes, binders, and separators.
• Integration of insights from full battery performance, degradation mechanisms, in situ/ex situ characterization, and theoretical calculations.

Main Results:

• PIBs leverage abundant potassium resources and exhibit excellent ion transport kinetics.
• Comprehensive overview of PIBs' components and performance characteristics.
• Identification of degradation mechanisms and areas for improvement.

Conclusions:

• PIBs present a promising, sustainable alternative to LIBs for large-scale energy storage.
• Further research into PIBs' components and performance is crucial for commercialization.
• This review aims to stimulate interest and guide future development of high-efficiency PIBs.