Briefly describe the important classification of lithium batteries

1. According to the different electrolyte materials used in lithium batteries, lithium batteries can be divided into two categories: liquid lithium battery (lithiumion battery, referred to as LIB) and polymer lithium ion battery (referred to as LIP). (2) According to the charging method, it can be divided into two types: non-rechargeable and rechargeable. (3) Lithium battery appearance: There are square lithium batteries (such as commonly used mobile phone batteries) and cylindrical (such as 18650, 18500); (4) Lithium battery outsourcing materials: aluminum shell lithium batteries, steel shell lithium batteries , Soft pack battery; (5). Lithium batteries are divided into positive and negative electrode materials (additives): lithium cobalt oxide (LiCoO2) batteries, lithium manganese oxide (LiMn2O4), lithium iron phosphate batteries, and disposable lithium manganese dioxide batteries. More The classification is listed in the following table: Classification method, category characteristics/description According to the battery shape, the cylindrical lithium battery is currently two models of 18650 (diameter 18mm, length 65mm) and 26650 (diameter 26mm, length 65mm), which are mainly used in notebooks and electric There are many types of square lithium batteries in the tool category, and they are mainly used in mobile phones, digital cameras, etc. Button-type lithium batteries can meet the requirements of computers and cameras for high specific capacity and thinness. According to the temperature of use, high-temperature lithium batteries are mainly used in military, aerospace, etc. In the field, the civil field is the GPS field of the car. Normal temperature lithium battery. The current commercial lithium battery can only work in the range of -20~45℃. According to the state of the electrolyte, the electrolyte of the liquid lithium battery is organic solvent + lithium salt polymer lithium battery. The polymer matrix is u200bu200bmainly all-solid-state lithium batteries such as HFP-PVDF, PEO, PAN and PMMA, which are still in the test stage. According to the shell material, the steel shell lithium battery has better sealing performance. Aluminum shell lithium battery quality is light aluminum plastic film lithium battery battery processing technology Simple, the quality of the battery is higher than the energy. According to the scope of use, the mobile phone lithium battery has a large market capacity. The digital camera lithium battery has a higher requirement for low-temperature performance of the battery. The notebook computer lithium battery is currently mainly cylindrical. With the development of thinner computers, in recent years Square batteries have a tendency to replace cylindrical batteries. Lithium batteries for electric vehicles have the highest requirements for various types of battery characteristics. At present, lithium cobalt oxide batteries are the most widely used according to the cathode material. They have high tap density, high specific energy, and stable voltage platform. But it turns out to be expensive, pollutes the environment, and has poor safety. Lithium manganate is a three-dimensional tunnel structure. Lithium ions can be reversibly extracted from the spinel lattice without causing structural collapse, so it has excellent rate performance and stability. . Environmentally friendly, but low energy density, high high temperature performance Lithium iron phosphate battery has large specific surface area, high energy density, good cycle performance, material batch processing is difficult to achieve high consistency, low temperature discharge performance is not good, according to the negative electrode material classification graphite Good electrical conductivity, high crystallinity, good layered structure suitable for Li deintercalation, capacity above 300mAh/g, charge-discharge efficiency above 90%, good charge-discharge platform, soft carbon has low crystallinity and small grain size, Good compatibility with electrolyte, low output voltage, no clear charge and discharge platform, high irreversible capacity, almost no commercial hard carbon Li embedding will not cause expansion, good charge and discharge cycle performance, high specific capacity, It can reach more than 400mAh/g and has good low-temperature performance. It is an ideal negative electrode material for electric vehicle batteries. Japan has commercialized zero-strain lithium titanate materials. The higher potential does not form lithium dendrites. The current research is relatively hot, but due to flatulence The problem has not been achieved so far that the silicon-based ultra-high specific capacity has not been used on a large scale, but due to the problem of pulverization, it cannot be really used. It is still in the laboratory research stage. Statement: Some pictures and content of the articles published on this site are from the Internet. If there is any infringement, please Contact delete the previous post: Analysis of the connection method between the electric vehicle lithium battery pack and the power lithium-ion battery protection board