ENPlus Develops Dry Electrode for Negative Electrodes

ENPlus has expanded its product portfolio of dry electrodes to the anode sector. On the 29th, ENPlus announced that it has successfully developed a 'dry electrode for anodes' using a roll-to-roll (continuous coating) method.

Previously, ENPlus succeeded in developing dry electrodes using NCM active materials last year. In March, it also succeeded in developing dry electrodes based on LFP active materials. While both products are dry electrodes used for 'cathodes,' the newly developed product is a dry electrode used for the 'anode.'

Unlike conventional electrodes, dry electrodes do not use liquid solvents (NMP), eliminating the drying process. This reduces infrastructure costs such as raw material expenses and large-scale drying ovens. Additionally, minimizing pores generated during the drying process leads to product advancement effects such as improved energy density.

The biggest challenges in the manufacturing process have been securing the optimized mixing ratio of binder, active material, and conductive agent, and resolving adhesion issues between the active material and the current collector. For graphite-based anode active materials, it is known to be difficult to achieve sufficient rolling effects due to their lower density compared to cathode active materials, making it hard to solve electrode breakage issues.

To address these issues, ENPlus reviewed many materials and found an optimized composition ratio for anode active materials, and overcame the breakage problem by emulsifying the electrode with additives. In the manufacturing process, ENPlus utilized a self-developed special current collector with high adhesion strength to successfully develop a dry electrode for anodes with effective rolling and high electrical properties.

An ENPlus representative explained, "Various dry electrode products allow for a reduction in the number of layers due to their high energy density, which can drastically lower battery (cell) manufacturing costs," adding, "They also suppress electrode delamination, reducing the probability of internal short circuits in batteries."

He continued, "With the addition of this anode dry electrode product alongside the existing cathode dry electrodes, ENPlus is taking a step further ahead in the secondary battery industry," and added, "We will continue to focus on securing differentiated core technologies to create competitive products and strive to expand sales."

This content was produced with the assistance of AI translation services.