CMC negative electrode binder is a water soluble anionic polyelectrolyte obtained by chemical modification of natural fibers. It is highly soluble in water and possesses excellent dispersibility, thickening, film forming, and water retention properties, which helps improve the adhesion of lithium battery negative electrode materials.

N-Methylpyrrolidone (NMP) is an efficient and selective chemical solvent. It has good chemical and thermal stability, low volatility, and is miscible with many organic solvents including ethanol, acetone, and aromatic hydrocarbons. It also offers advantages such as a high boiling point, high flash point, and suitability for multiple formulation applications. It is suitable for the research and production of lithium-ion battery positive electrodes, the preparation of carbon nanotube (CNT) conductive pastes, and other applications.

Deionized water acts as the solvent for dissolving water based binders such as CMC/SBR. In lithium-ion battery negative electrode preparation, it dissolves binders to realize good bonding between negative electrode components (graphite/silicon based materials, conductive agents) and the current collector. Controlling slurry formulation ensures coating uniformity and electrode forming quality. Upon drying, the coated composite layer forms a porous electrode structure that accommodates the volume expansion of silicon based active materials and meets electrolyte wetting and filling requirements. Deionized water is a critical process medium for the stable structure of lithium-ion battery negative electrodes and the long term electrochemical performance of batteries.

Ultra-thin series: Available in 4.5 μm and 6 μm grades to boost battery energy density. High strength and toughness: Tensile strength > 300 MPa, elongation > 5%, ensuring high processing yield of ultra-thin copper foil during coating, slitting, and winding operations. High uniformity: Thickness tolerance strictly controlled within ±2 μm, with areal density accuracy of ±1 g/m², ensuring consistency of battery electrodes. Excellent surface properties: Adopts a double-sided smooth finish with controllable surface roughness (Ra < 0.35 μm), optimizing adhesion of active materials and battery-interface stability. High chemical stability: Subjected to specialized surface passivation treatment, delivering good oxidation resistance and electrolyte corrosion resistance.

Thickness: The mainstream thickness is 10-20 micrometers (μm). Some enterprises have achieved mass production at 8 μm. In the future, it may be reduced to 6 μm. The thickness deviation should be controlled within ±2% to ensure battery consistency. Mechanical properties: Tensile strength ≥ 180 MPa. In some scenarios, tensile strength of ≥200Mpa or even 300Mpa is required, while maintaining ≥ 3% elongation to meet the requirements of high compact density.

Carbon-coated aluminum foil. This is a key advanced material that introduces a carbon coating layer on the positive electrode current collector aluminum foil. Its purpose is to address the conductive and adhesive bottlenecks on the positive electrode side, thereby significantly enhancing the power density, cycle life, and safety of lithium batteries. It complements the carbon-coated copper foil and jointly expand the boundaries of lithium battery performance.

Carbon graphite plate electrode of the dual-coated electrode material for the negative electrode of the battery.

Lithium metal ingots are blocky raw materials made from high-purity metallic lithium. As the least dense and most electrochemically active silvery-white metal in nature, it is mainly used in aerospace alloys, the nuclear industry, and as a core material for solid-state batteries and lithium-sulfur batteries.

Copper-lithium composite strips are a novel type of battery negative electrode current collector material, mainly composed of metallic copper and lithium strips through mechanical processing or rolling. It can directly provide lithium to the battery, and features improved lithium-ion deposition, increased battery energy density, and longer cycle life.

The PET positive electrode composite aluminum foil is a new type of composite current collector material based on polyethylene terephthalate (PET) as the substrate. It deposits a metal aluminum layer on both the upper and lower surfaces of the substrate through vacuum evaporation technology, forming a "aluminum-PET-aluminum" sandwich structure. It is specifically designed for the positive electrode of lithium-ion batteries.

The PET negative electrode composite copper foil is a composite current collector material made by using polyethylene terephthalate (PET) film as the base material and depositing metal copper layers on both sides. It is specifically designed for the negative electrode of lithium-ion batteries.

The positive electrode sheet is one of the core components of a battery. Together with the negative electrode sheet, it forms the electrochemical reaction area of the battery, responsible for providing and receiving electrons during the charging and discharging process of the battery, and achieving the conversion between chemical energy and electrical energy.