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Sodium Battery Laboratory Line

December 09 , 2025

Xiamen Tmax Battery Equipments Limited was set up as a manufacturer in 1995, dealing with lithium battery equipments, technology, etc.  We have total manufacturing facilities of around 200000 square foot and more than 230 staff. Owning a group of experie-nced engineers and staffs, we can bring you not only reliable products and technology, but also excellent services and real value you will expect and enjoy.



A sodium battery laboratory line is an integrated small-scale production and testing system designed for research, pilot verification, and early-stage process development of sodium-ion batteries. Compared with full-scale manufacturing lines, a laboratory line focuses on flexibility, precision, and repeatability, enabling researchers to optimize material formulations, electrode structures, and assembly processes under controlled conditions. This equipment arrangement is essential for universities, research institutes, and battery manufacturers seeking to accelerate the transition from laboratory research to commercial sodium-ion battery production.

1. Material Preparation and Mixing Section

The first stage of a sodium battery laboratory line involves preparation of cathode and anode materials. High-energy ball mills, planetary mixers, and vacuum dispersers are widely used to mix active materials, conductive carbon, and polymer binders. These machines are engineered to deliver stable slurry viscosity and uniform particle distribution, which directly affect electrode quality. Moisture-controlled storage cabinets preserve raw materials and prevent contamination, ensuring consistent experimental conditions.

2. Precision Electrode Coating

Electrode fabrication is one of the core components of the sodium battery laboratory line. Laboratory-scale coaters—such as doctor-blade coaters and slot-die coaters—apply slurry onto aluminum or copper foil with high precision. These systems allow researchers to control coating thickness, speed, and tension at micron-level accuracy. The ability to rapidly adjust parameters helps optimize electrode performance, making the laboratory line ideal for process development and academic research.

After coating, electrodes are dried in programmable drying chambers or vacuum ovens. These units ensure thorough solvent removal while maintaining stable temperature distribution to avoid film cracking or delamination. Accurate drying is crucial for ensuring that electrode adhesion and porosity meet experimental design targets.

3. Calendering, Slitting, and Electrode Preparation

Once dried, electrode sheets pass through compact calendering machines that adjust electrode density and mechanical strength. This step improves electrical conductivity and structural uniformity. High-precision slitting equipment then cuts electrodes into laboratory-size strips or discs, maintaining clean and burr-free edges. For pouch-cell research, punching devices may be used to produce consistent electrode shapes to support high repeatability in experiments.

4. Glove Boxes and Cell Assembly Platform

A sodium battery laboratory line integrates a high-purity argon glove box for sensitive cell assembly. Sodium-ion materials and electrolytes are highly reactive with moisture and oxygen, making the controlled glove-box environment essential. Moisture and oxygen levels are maintained below 1 ppm to ensure stable electrochemical behavior.

Inside the glove box, researchers use tools such as:

* Semi-automatic stacking machines
* Coin-cell crimpers
* Pouch-cell heat sealers
* Ultrasonic welders

These compact assembly devices allow precise construction of various battery formats, including coin, pouch, and small prismatic cells. Adjustable fixtures accommodate experimental variations, supporting rapid iteration and optimization.


Electrode Press Machine



5. Electrolyte Preparation and Injection

The laboratory line includes equipment for electrolyte preparation, such as magnetic stirrers, vacuum filtration systems, precision scales, and solvent-handling units. Once the electrolyte is prepared, vacuum injection devices introduce it into cells to ensure complete wetting of the electrodes. Precise control of injection volume ensures repeatable experimental results and minimizes variations in electrochemical performance.

6. Formation, Cycling, and Characterization Modules

A sodium battery laboratory line is equipped with advanced electrochemical testing systems for characterizing cell performance. Multi-channel battery testers conduct formation, cycling, and capacity evaluation under controlled current, voltage, and temperature conditions. These testers generate essential data on battery efficiency, cycle life, and internal resistance.

Additional characterization tools commonly integrated into the laboratory line include:

* Electrochemical impedance spectroscopy (EIS) analyzers
* Cyclic voltammetry (CV) systems
* Environmental chambers for temperature-dependent cycling
* Impedance and leakage-current testers

These devices support in-depth analysis of kinetics, SEI formation, degradation mechanisms, and thermal behavior.

7. Data Management, Safety, and Environmental Control

Modern sodium battery laboratory lines integrate digital monitoring platforms and laboratory MES systems to track parameters such as slurry viscosity, coating thickness, drying temperature, and cycling data. This improves process stability and facilitates data-driven research.

Safety equipment—including explosion-proof storage cabinets, fume hoods, solvent-collection systems, and emergency-cutoff devices—ensures a secure working environment. Temperature and humidity control systems maintain stable laboratory conditions, which is essential for consistent testing.

Conclusion

A sodium battery laboratory line provides a complete, flexible, and precise platform for sodium-ion battery research and pilot development. By integrating material preparation, electrode fabrication, advanced assembly environments, and comprehensive testing systems, the laboratory line accelerates innovation and supports the transition from scientific research to industrial application. As sodium-ion technology expands globally, these laboratory lines play a critical role in enabling breakthroughs and refining scalable manufacturing processes.

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