Dry Electrode Product Technical Parameters

Dry Electrode Introduction

1. What is Dry Electrode?

2. Core Advantages of Dry Electrode

(1) Superior Performance

• Higher Capacity & Conductivity: The dry-process avoids the agglomeration of active materials caused by solvent dispersion and the blockage of ion channels due to solvent residue. For example, the material capacity of high-capacity supercapacitor dry electrodes can reach 140F/g, and the lithium-ion supercapacitor dry electrode has a high surface capacity of 49000-59000F/m², which is 15%-20% higher than that of wet-process electrodes of the same type.

• Excellent Cycle Stability: The dry calendering process forms a dense and uniform electrode structure, and the bonding force between active materials and the current collector is increased by 30% compared with wet-process. This enables the high-cycle supercapacitor dry electrode to maintain stable performance after millions of charge-discharge cycles, far exceeding the service life of wet-process electrodes.

• Controllable Physical Properties: The areal density (40-400g/m²), compaction density (0.53-2.95g/cm³), and thickness (75-800um) of dry electrodes can be flexibly adjusted according to application needs. For example, button-type supercapacitor dry diaphragms have a fixed thickness of 800um to match the compact structure of button cells, while lithium-ion supercapacitor dry electrodes have differentiated positive and negative electrode parameters to adapt to the ion migration characteristics of lithium-ion systems.

(2) Green & Efficient Production

• Eco-Friendly: No organic solvents are used in the entire production process, eliminating solvent recovery and treatment links, reducing VOC emissions by 100%, and complying with global environmental protection standards (such as EU REACH, China GB 30526).

• Energy & Cost Saving: The dry-process omits the high-energy-consuming drying and solvent recovery steps, reducing production energy consumption by 40%-50%. At the same time, the material utilization rate is increased to over 99% (no material loss during solvent volatilization), significantly lowering the overall production cost of electrodes.

(3) Wide Adaptability

• Supercapacitors: Suitable for high-cycle, high-capacity, and button-type supercapacitors, meeting the needs of wind-solar energy storage, new energy vehicles, and small electronic devices.

• Lithium-Ion Supercapacitors: The differentiated positive and negative electrode design (positive areal density 180-400g/m², negative 100-200g/m²) matches the lithium-ion intercalation/deintercalation mechanism, improving the energy density and power density of lithium-ion supercapacitors.

• Special Scenarios: The stable structure and wide temperature adaptability (matching the -40℃~65℃ working temperature of supercapacitors) make dry electrodes applicable to extreme environments such as high-altitude wind power stations, cold-region new energy vehicles, and aerospace equipment.