1. Improve energy density: By optimizing the structure and composition of positive and negative electrode materials, develop materials with higher specific capacity to increase the energy storage capacity of the battery.

2. Improve cycle life: Research to improve the stability and structural integrity of electrode materials, reduce capacity attenuation during charge and discharge, and thus extend the service life of the battery.

3. Speed up the charging speed: optimize the ion transport performance of the electrode material and the structural design of the battery, reduce the internal resistance, achieve fast charging, and improve the efficiency of the battery.

4. Find better positive and negative electrode materials: Explore new sodium ion positive electrode materials (such as Prussian blue analogs, layered oxides, etc.) and negative electrode materials (such as hard carbon, soft carbon, etc.) to improve battery performance and reduce costs.

5. Improve low temperature performance: sodium-ion batteries can still maintain good electrochemical performance at low temperatures and expand their application range.

6. Development of high-performance electrolytes: including optimizing the composition of liquid electrolytes and developing solid electrolytes to improve ionic conductivity and safety.

7. Reduce costs: from the material selection, preparation process, etc., reduce the overall production cost of sodium-ion batteries to improve their market competitiveness.

8. Solve the safety problem: study the safety performance of the battery under abnormal conditions such as overcharge, overdischarge, short circuit, etc., and take appropriate measures to ensure the safety of the battery.

In summary, there are many research focuses on sodium batteries, which can show that there are many challenges encountered by sodium batteries, and it can also show that the potential of sodium batteries is unlimited, and it needs people to explore.

As a comprehensive high-tech company committed to the field of energy storage, Qimei will also invest in the research and development of the potential of sodium batteries, and continue to work hard to build the world's leading energy storage brand.