Enhanced Sodium Ion Batteries' Performance: Optimal Strategies on Electrolytes for Different Carbon-based Anodes

Area of Science:

• Materials Science
• Electrochemistry
• Energy Storage

Background:

• Carbon-based materials are cost-effective anodes for sodium-ion batteries (SIBs).
• Current SIB performance is limited by electrode-electrolyte incompatibility.
• Enhancing electrochemical performance is critical for SIB commercialization.

Purpose of the Study:

• To systematically review electrolyte optimization strategies for carbon anodes in SIBs.
• To provide guidance for rational electrolyte design in SIBs.

Main Methods:

• Comprehensive presentation of electrolyte formulations (solvents, salts, additives).
• Analysis of electrolyte properties and their impact on solid electrolyte interface (SEI) formation.
• Cost analysis of common electrolytes.

Main Results:

• Electrolyte composition significantly influences SEI formation and sodium ion storage.
• Various electrolyte strategies can enhance the performance of hard carbon, graphite, and other carbon anodes.
• Cost-effectiveness of electrolytes is considered.

Conclusions:

• Optimized electrolytes are essential for advancing carbon anode performance in SIBs.
• This review offers insights for future electrolyte development tailored to carbon anodes.
• Further research can accelerate the commercialization of SIB technology.