source:other news
release time:2023-03-13
Hits:0
Popular:

In the early research of lithium-ion batteries, metal lithium was mainly used as the negative electrode. However, during the charging process, lithium precipitation occurred on the surface of the negative electrode, which eventually led to battery short circuit and caused safety problems. The application of lithium intercalation compounds in the negative electrode is the key to the successful commercialization of lithium ion batteries. At present, carbon anode materials are more mature.
Carbon anode materials mainly include graphite, graphitized materials and amorphous carbon materials. Graphite material is the earliest commercialized lithium-ion anode material, including natural graphite and artificial graphite. The carbon atoms are bonded by SP2 hybrid orbital, arranged in hexagonal shape, and extended in two-dimensional direction. The layers are combined by van der Waals force to form layered microcrystalline structure. At room temperature, lithium can be embedded into every six carbon atoms in pure graphite materials. The theoretical expression is LiCs, and the theoretical capacity is 372mAh/g. The interlayer spacing of graphite after lithium intercalation increased from 0.335 nm to 0.370 nm.
The degree of graphitization of carbon materials, also known as the degree of order, will affect the actual lithium intercalation capacity of materials. Table 1-1 shows the crystallinity and actual lithium intercalation capacity of several graphite materials. Among them, the specific capacity and crystallinity of natural graphite are higher than those of the three artificial graphite materials in the table, but the capacity retention rate and cost of natural graphite materials are not as high as that of artificial graphite. In addition, the particle size, specific surface area and surface functional groups of graphite materials also affect the electrochemical properties of graphite materials.
Amorphous carbon materials mainly include hard carbon 1] and soft carbon [], which have high specific capacity. However, during the first lithium intercalation process, there is a large irreversible capacity loss, which limits its commercial application.
Among non-carbon materials, metal oxide materials, silicon-based materials, alloy materials and metal sulfide materials are mainly studied at present.
Read recommendations:
lifepo4 solar battery wholesaler
Clean Vehicle Motive Battery 12V 100Ah 50Ah LiFePo4
The significance of a high -power battery.best deep cycle marine battery
Last article:High capacity battery.marine battery for trolling motor
Next article:Cathode material of lithium ion battery.12 volt deep cycle marine battery
related suggestion
solar energy storage batteries company
2023-03-20lithium batteries for boats Factory
2023-04-07lithium deep cycle marine battery wholesaler
2023-03-22best solar generator for home backup
2023-03-20portable solar power generator
2023-03-20solar powered generator for camping
2023-03-20solar battery generator
2023-05-08lithium golf cart batteries
2023-05-08best solar generator for home
2023-05-08solar generators for sale
2023-05-0824v deep cycle battery
2023-05-08solar energy storage batteries
2023-05-08Wall Mount Rack Home Energy Battery Pack 16S2P 51.2V 100Ah Cylindrical Cell
2022-10-19Home Energy Storage Battery 51.2V 200Ah 10KWh Stackable Module
2023-04-1012V 150Ah 200Ah LiFePo4 Motive Battery Pack for Clean Car Electric Vehicle
2023-02-14Medical Equipment Cylindrical Lithium Ion Battery 3.7V
2023-02-1412V Rechargeable Lithium Ion 18650 Battery Pack 2000mAh
2023-02-14The Best 18650 Batteries for Flashlights: A Professional Guide for Commercial Buyers
2025-05-21Is the solid lithium ion battery good or liquid lithium ion battery?solar battery storage system
2023-03-08Lithium battery recycling technology is immature.portable power station solar
2023-05-26Energy Storage: Components, Investments, and the Geopolitical Imperative
2025-03-20Optimizing Power Solutions: The Advantages of Group Size Lithium Batteries
2025-03-17Which is better, the ternary polymer lithium battery or the lithium iron phosphate battery?
2022-12-01Does 24V lithium-ion battery of electric vehicle need maintenance?
2022-11-0748V lithium ion battery introduction.portable power station with solar panel
2023-05-09Analysis of the causes of combustion and explosion in lithium-ion secondary batteries.lithium batteries for solar panels
2023-08-04Fast reasons for the decrease in low -temperature battery power.marine battery for trolling motor Production
2023-04-14