Shenzhen Senior Technology Material Co., Ltd.

Senior's dry-process lithium battery separator is prepared by a dry-process technique and serves as a key inner-layer material for lithium-ion batteries, isolating the positive and negative electrodes to prevent short circuits while allowing electrolyte ions to pass through. The product line includes three categories - double-layer composite, single-layer, and high-toughness separators - which, based on varying porosity and pore size, are applied in electric vehicles, power tools, energy storage equipment, and 3C electronic products.

Double-layer separator: double-layer composite structure with high safety factor, stably supplied long-term to renowned overseas battery manufacturers; Single-layer separator: high strength with consistent thickness and air permeability, suitable for high-energy-density batteries and coating base films, stably supplied to overseas customers since 2013; High-toughness separator: strength increased by over 20% versus previous products, ultra-fine pore size with highly concentrated distribution, extensible to protect electrodes and prevent positive/negative contact during heavy-object impact and cross-section tests.

• Electric vehicles
• Power tools
• Energy storage equipment
• 3C electronic products

The wet-process lithium battery separator is prepared by a wet biaxial stretching process, with a single- or multi-layer design, featuring uniform pore-size distribution, high MD/TD tensile and puncture strength, and excellent thermal stability; it is a key inner-layer material for lithium-ion batteries and is used in high-performance lithium-ion batteries.

Single- or multi-layer design; uniform pore-size distribution; high MD/TD tensile and puncture strength; excellent thermal stability; good permeability, high porosity and low internal resistance; lightweight design for high energy density - 5 um for digital lithium-ion batteries, 7 um for digital lithium-ion batteries and some high-energy-density power lithium-ion batteries; already supplied in volume to top-tier domestic and overseas manufacturers.

• High-performance lithium-ion batteries
• Digital lithium-ion batteries
• High-energy-density power lithium-ion batteries

The coated lithium battery separator undergoes functional coating on a base film and includes various types such as ceramic coating, resin coating, aqueous PVDF, and nano-resin coating, improving the separator's thermal stability, safety, and interfacial adhesion with electrode sheets, and is applied in electric vehicles, e-bikes, power tools, energy-storage power supplies, and other lithium-ion power batteries.

Ceramic coating: proprietary coating with low moisture and low thermal shrinkage, uniform ceramic particle size and good flatness, porous structure with consistent coating (coating thickness = target thickness plus/minus 1 um); Resin coating: water-based and eco-friendly, good interfacial adhesion with electrode sheets and high hardness for pouch cells, coating thickness 0 to 1 um; Aqueous PVDF coating: good electrolyte retention and excellent cycle performance, strong adhesion to electrode sheets and oxidation resistance, meeting high-voltage batteries; Nano-resin coating: water-based, good adhesion to electrode sheets and high battery hardness.

• Electric vehicles
• E-bikes
• Power tools
• Energy storage power supplies
• Lithium-ion power batteries

The reverse osmosis membrane (RO membrane) is a new category of functional membrane material from Senior, leveraging the company's process expertise in multi-functional membrane polymer processing, and is being expanded into applications in the chemical industry, power generation, seawater desalination, wastewater treatment, and pharmaceuticals.

Diversified products can be designed to meet different application needs; more environmentally friendly; applied in industries such as chemical, power, seawater desalination, wastewater treatment, and pharmaceuticals.

• Chemical industry
• Power generation
• Seawater desalination
• Wastewater treatment
• Pharmaceuticals

The nanofiber membrane is one of Senior's other functional products, belonging to functional filtration membranes; leveraging the company's R&D capability in multi-functional membrane materials, it targets broader filtration and separation applications and can continuously develop new materials that enrich life beyond existing technologies.

Nanofiber membrane structure with functional filtration performance; diversified products can be designed to meet different application needs; new materials that enrich life can be continuously developed beyond existing technologies.

• Functional filtration
• Industrial filtration and separation

The high-performance composite material is one of Senior's other functional products, representing a new direction in functional membrane materials; synergizing with the company's lithium battery separator and functional membrane process capabilities, it targets broader material application expansion.

High-performance composite material structure; diversified products can be designed to meet different application needs; new materials that enrich life can be continuously developed beyond existing technologies.

• Functional filtration
• New material applications