Battery Manufactory

Lithium-ion batteries are widely used because of their light weight, large capacity, and no memory effect—many digital devices today use lithium-ion batteries as power sources, although they are relatively expensive. Lithium-ion batteries have high energy density, their capacity is 1.5 to 2 times that of nickel-metal hydride batteries of the same weight, and they have a very low self-discharge rate. In addition, lithium-ion batteries have almost no "memory effect" and the advantages of no toxic substances are also important reasons for their widespread use. Please pay attention to the safety of lithium-ion batteries . Lithium-ion batteries are prone to short circuits during charging. While most Li-ion batteries come with protection circuits against short circuits, there are also explosion proof cords. But this circuit may not necessarily be useful in various situations. The use of explosion-proof wire is also limited. So, what conditions should lithium-ion batt

Commonly used conductive agents for lithium-ion batteries can be divided into traditional conductive agents (such as carbon black, conductive graphite, carbon fiber, etc.) and new conductive agents (such as carbon nanotubes, graphene and their mixed conductive pastes, etc.). The types of conductive agents on the market are SPUERLi, S-O, KS-6, KS-15, SFG-6, SFG-15, 350G, acetylene black (AB), Ketjen black (KB), vapor grown carbon fiber (VGCF) , carbon nanotubes (CNTs), etc. 1. Carbon black Carbon black is chain-like or grape-like under scanning electron microscope, and a single carbon black particle has a very large specific surface area (700m2/g). The high specific surface area and tight packing of carbon black particles facilitates the close contact between the particles, forming a conductive network in the electrode. The process problem caused by the larger specific surface is that it is difficult to disperse and has strong oil absorption. This requires improving the

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 l

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 material. Negative

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 directly determin

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 batteries. The electrochemical performance par