HouYou Ploymer Cell Manufacturer

In the structure of lithium batteries, the separator is one of the key inner layer components. The performance of the lithium-ion battery separator determines the interface structure and internal resistance of the battery, which directly affects the capacity, cycle and safety performance of the battery. The separator with excellent performance plays an important role in improving the overall performance of the battery. First, the performance of lithium-ion battery separator The lithium-ion battery separator is located between the positive electrode and the negative electrode, and its main function is to separate the positive and negative active materials to prevent the two electrodes from being short-circuited due to contact; in addition, during the electrochemical reaction, it can maintain the necessary electrolyte and form a channel for ion movement . The diaphragm material is non-conductive, and the diaphragm used is different for different types of batteries. For li...

Usually the most important power lithium batteries we say are lithium iron phosphate batteries, lithium manganate batteries, lithium cobalt oxide batteries and ternary lithium ion batteries. So, what are the classifications of lithium-ion batteries? 1. Lithium-ion batteries are usually divided into two categories according to internal materials Lithium metal battery: Lithium metal batteries generally use manganese dioxide as the positive electrode material, metal lithium or its alloy metal as the negative electrode material, and use a non-aqueous electrolyte. Lithium-ion batteries: Lithium-ion batteries generally use lithium alloy metal oxides as the positive electrode material, graphite as the negative electrode material, and use a non-aqueous electrolyte. Although lithium metal batteries have high energy density, they can theoretically reach 3860 watts/kg. However, due to its unstable nature, it cannot be recharged and cannot be reused as a power lithium battery. Lith...

The negative electrode of lithium-ion battery is made of carbon or non-carbon materials, adhesives and additives, which are mixed to make a paste adhesive evenly coated on both sides of the copper foil, and then dried and rolled. The cathode material is the main body of lithium-ion battery to store lithium, which makes lithium ions embedded and removed in the process of charging and discharging. From a technical point of view, the cathode materials of lithium-ion batteries will show diversity in the future. With the progress of technology, the current anode materials for lithium-ion batteries have developed from a single artificial graphite to a situation in which natural graphite, mesophase carbon microsphere and artificial graphite are the main anode materials, and soft carbon / hard carbon, amorphous carbon, lithium titanate, silicon carbon alloy and other anode materials coexist. Anode material: mostly graphite. New research finds that titanate may be a better mate...

Lithium-ion battery consists of positive electrode, negative electrode, electrolyte, electrolyte salt, adhesive, separator, positive electrode lead, negative electrode lead, center terminal, insulating material, safety valve, positive temperature coefficient terminal (PTC terminal), negative electrode current collector, positive electrode current collector, conductive agent, battery case and other components. The cathode materials of lithium-ion batteries are lithium-containing transition metal oxides, phosphides such as LiCoO2, LiFePO4, etc., conductive polymers such as polyacetylene, polyphenylene, polypyrrole, polythiophene, active polysulfide compounds, etc.; lithium intercalation compound cathode materials It is an important part of lithium-ion batteries. The positive electrode material occupies a large proportion in lithium-ion batteries, so the performance of the positive electrode material will greatly affect the performance of the battery, and its cost also dir...

Types of Lithium Ion Batteries Lithium-ion batteries can be used in a variety of fields, so there are many types. According to the division of shape, there are mainly three types of lithium-ion batteries on the market, namely button type, cylindrical type and square type(C & D). Can meet the requirements of different uses. The cylinder model is represented by 5 digits, the first two digits represent the diameter, and the last two digits represent the height. For example, the diameter of 18650 battery is 18mm and the height is 65mm, which is represented by 18*65. The first two digits are the thickness of the battery, the middle two digits are the width of the battery, and the last two digits are the length of the battery. For example, model 083448 is 8mm thick, 34mm wide, and 48mm long, and is represented by 8*34*48. The size and weight of lithium-ion batteries are important indicators of lithium-ion batteries, which directly affect the performance of lithium-ion b...

Lithium battery electrolyte is generally composed of lithium salt and organic solvent. The electrolyte plays the role of conducting ions between the positive and negative electrodes of the lithium battery, which is the guarantee for the lithium ion battery to obtain the advantages of high voltage and high specific energy. The electrolyte is generally prepared from high-purity organic solvents, electrolyte lithium salts, necessary additives and other raw materials under certain conditions and in a certain proportion. The important components of lithium-ion battery electrolyte are as follows: 1. Ethylene carbonate: Molecular formula: C3H4O3, transparent and colorless liquid (>35℃), crystalline solid at room temperature, a good solvent for polyacrylonitrile and polyvinyl chloride. 2. Propylene carbonate, colorless and odorless, or light yellow transparent liquid, soluble in water and carbon tetrachloride, miscible with ether, acetone, benzene, etc. This product should ...