Lithium Batteries Knowledge
Which is better, ternary or lithium iron phosphate battery? The difference between ternary lithium battery and lithium iron phosphate battery
Many people will be entangled in the type of battery when purchasing new energy vehicles. In fact, the difference between ternary lithium battery and lithium iron phosphate battery mainly lies in the positive electrode material. Among them, the positive electrode material of ternary lithium battery is nickel salt, cobalt salt, manganese salt, and the positive electrode material of lithium iron phosphate battery is lithium iron phosphate. In addition, the electrolyte and anode materials of both use lithium hexafluorophosphate and graphite.
Which is better, lithium manganate battery or ternary lithium battery? The difference between lithium manganate battery and ternary lithium battery
Lithium manganate battery refers to a battery whose positive electrode uses lithium manganate material. The nominal voltage of lithium manganate battery is 2.5~4.2v. Lithium manganate battery is widely used because of its low cost and good safety. Lithium manganate battery is a cathode material with low cost, good safety and low temperature performance, but the material itself is not very stable, and it is easy to decompose to generate gas, so it is mostly used in combination with other materials to reduce the cost of the cell, but its cycle The lifespan decays rapidly, bulging easily occurs, the high temperature performance is poor, and the lifespan is relatively short. It is mainly used for large and medium-sized batteries. In terms of power batteries, its nominal voltage is 3.7V.
What types of cylindrical lithium batteries are there? Introduction of common cylindrical lithium battery models
With the development of lithium battery technology, there are more and more types of cylindrical lithium batteries. Cylindrical lithium ion batteries are divided into lithium cobalt oxide, lithium manganate, and ternary materials. The three material system batteries have different advantages. Let's take a look at the models and specifications of cylindrical lithium batteries.
A slight swelling of the polymer lithium battery will affect the use, reduce the battery performance, and in severe cases will burst the packaging aluminum foil, causing leakage and corrosion. Next, let's analyze the reasons for the inflation of polymer lithium batteries.
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.
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.
What are the types of lithium-ion batteries? Lithium-ion battery classification and characteristic analysis
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?
What are the negative electrode materials for lithium ion batteries? Introduction of cathode materials for lithium ion batteries
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.
What are the cathode materials for lithium ion batteries? Lithium-ion battery cathode material introduction
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.
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.