Recent Progress and Perspective: Na Ion Batteries Used at Low Temperatures

Area of Science:

• Materials Science
• Electrochemistry
• Energy Storage

Background:

• Lithium materials are finite and projected to be depleted within 50 years, necessitating alternatives.
• Sodium is an abundant element, making sodium-ion batteries a promising sustainable energy storage solution.
• Current sodium-ion battery research faces challenges in achieving optimal low-temperature performance.

Purpose of the Study:

• To identify electrode materials with high specific capacity for charge/discharge at low temperatures.
• To explore high-potential cathode and low-potential anode materials for enhanced battery performance.
• To analyze the air stability and degradation of electrode materials in full and half cells.

Main Methods:

• Review and categorization of cathode materials: Prussian blue analogues, layered oxides, and polyanionic-type cathodes.
• Review and categorization of anode materials: hard carbon, amorphous selenium, metal selenides, and NaTi2(PO4)3.
• Categorization of electrolytes: organic, ionic liquid, aqueous, and solid-state electrolytes.

Main Results:

• Identified key electrode materials and electrolyte types relevant to low-temperature sodium-ion battery performance.
• Evaluated the air stability and degradation characteristics of various electrode materials.
• Assessed the low-temperature electrical conductivity of different electrolyte systems.

Conclusions:

• Understanding the factors influencing low-temperature performance is crucial for advancing sodium-ion battery technology.
• Further research into novel electrode materials and electrolytes is needed to overcome current limitations.
• Optimizing sodium-ion batteries for cold environments is essential for widespread adoption.