Bulk-to-interface engineering of solid-state electrolytes toward fast-charging Li/Na-ion batteries

Area of Science:

• Materials Science
• Electrochemistry
• Energy Storage

Background:

• The increasing demand for electric vehicles and advanced electronics necessitates faster charging for lithium-ion and sodium-ion batteries.
• Solid-state electrolytes offer superior safety and energy density compared to liquid electrolytes, making them crucial for next-generation batteries.
• Current solid-state electrolyte technology requires further advancements to meet fast-charging demands.

Purpose of the Study:

• To review the advantages of solid-state electrolytes for fast-charging lithium-ion and sodium-ion batteries.
• To analyze ionic conductivity, ion flux, and interfacial properties of solid-state electrolytes.
• To discuss optimization strategies and evaluation systems for solid-state electrolytes.

Main Methods:

• Literature review focusing on solid-state electrolyte properties and performance.
• Analysis of bulk and interfacial characteristics, including ionic conductivity and mechanical stability.
• Examination of failure mechanisms like dendrite formation and surface degradation.

Main Results:

• Solid-state electrolytes present significant advantages for fast-charging applications.
• Understanding bulk and interfacial properties is critical for optimizing performance.
• Novel insights into static and dynamic surface failure modes at the solid electrolyte interface are presented.

Conclusions:

• Solid-state electrolytes are essential for achieving high-energy-density, fast-charging lithium-ion and sodium-ion batteries.
• Integrated bulk-to-interface engineering is proposed to enhance both energy density and charging speeds.
• Further research into interfacial phenomena and failure mechanisms will accelerate the development of advanced solid-state batteries.