CNHL Lipo Batteries
CNHL aim at providing high-quality Li-Po batteries and RC products to all hobby enthusiasts with excellent customer services and competitive prices
Today, CNHL, the supplier of 11.1v 3s lipo battery, will introduce the five major battery materials: positive electrode, negative electrode, electrolyte, lithium battery copper foil, and separator. These are the main direct materials of 2200mah 11.1v 3s lipo battery. Interested partners may wish to take a few minutes to visit with me.
Positive electrode material
Changes in the market share of five key 11.1v 3s lipo battery materials in China from 2015 to 2021 show that cathode materials are the most important material cost, accounting for about 55%. Lithium-ion batteries are mainly divided into iron phosphate 2200mah 11.1v 3s lipo battery and ternary battery based on different positive electrode materials. Both power 11.1v 3s lipo battery are available. At present, almost all domestic energy storage batteries are iron phosphate 2200mah 11.1v 3s lipo battery. .
Anode materials accounted for about 14% of the total cost, including artificial graphite and natural graphite. Artificial graphite can be used for power 11.1v 3s lipo battery and energy storage 11.1v 3s lipo battery, while natural graphite is mostly used in consumer batteries.
The electrolyte accounts for about 13% of the total cost of the 11.1v 3s lipo battery, and its main components are solutes, solvents and additives. Solutes, including LiPF6 and the novel lithium salt LiFSI, are the main cost sources. Solvents are mainly cyclic carbonates and chain carbonates, including PC, EC, DMC, DEC and EMC, etc. 11.1v 3s lipo battery additives are mainly used for film formation, overcharge protection, low temperature resistance, flame retardant, and increase rate etc. Common products include VC, FEC, PS, LiBOB, DTD, LiDFOB, etc.
Lithium battery copper foil
For electrolytic copper foil, the cost accounts for about 8%. Lithium battery copper foil is used for negative current collector of 11.1v 3s lipo battery.
2200mah 11.1v 3s lipo battery diaphragm
The 2200mah 11.1v 3s lipo battery diaphragm accounts for 4% of the total material cost and is divided into wet diaphragm and dry diaphragm. The main cost of the wet diaphragm is PE, and the main component of the dry diaphragm is PP.
The upstream raw materials of 2200mah 11.1v 3s lipo battery mainly include various minerals, including lithium ore, nickel ore, cobalt ore, manganese ore, iron ore and other metal resources and graphite ore, silicon, phosphate and other non-metallic mineral resources, smelted out 11.1v The raw materials of 3s lipo battery mainly include positive electrode material, negative electrode material, diaphragm, electrolyte, lithium battery copper foil, etc.
In the upstream mineral resources of 11.1v 3s lipo battery materials, cobalt, nickel and lithium rely on overseas imports. The global market share of China’s cathode/anode/electrolyte/diaphragm and other battery materials is 55%/92%/86%/73% respectively, but China’s key basic materials cobalt, nickel and lithium only account for 1.95% of global reserves/ 1.57%/6.31%, cobalt/nickel/lithium depends on imports. With the rapid growth of demand for new energy vehicles, the cobalt/nickel/lithium market is booming.
The supply of lithium iron phosphate will be tight in 2021-2022, the speed of capacity expansion will be accelerated, and there will be structural excess risks in 2023-2025. It is estimated that domestic lithium iron phosphate shipments will be about 950,000 tons in 2022, while the production capacity at the beginning of the year is 940,000 tons, and the product supply is tight. With the rapid release of lithium iron phosphate production capacity in 2023, there is a risk of structural excess capacity.
Capacity planning and demand forecast of Chinese lithium iron phosphate 11.1v 3s lipo battery material enterprises from 2021 to 2025 (10,000 tons, incomplete statistics)
The supply of ternary materials from 2022 to 2025 will be tight, and ternary materials companies will be cautious in capacity expansion. It is estimated that the domestic shipments of ternary materials in 2022-2025 will be 62/88/123/1.70 million tons, respectively, while the production capacity at the beginning of each year will be 62/100/125/1.55 million tons, 11.1v 3s lipo battery lithium iron phosphate The supply of production capacity is relatively tight.
Lithium iron phosphate is developing towards high compaction, low temperature performance, and high energy density. The performance of 11.1v 3s lipo battery lithium iron phosphate material is close to the theoretical bottleneck, and it is difficult to greatly improve the performance of the material itself; currently, low-cost and long-cycle lithium iron phosphate cathode materials are being developed. Materials currently under development include high compaction density, fast charging, and high energy density materials (such as lithium manganese iron phosphate).
Ternary materials are developing in the direction of high nickel, low cobalt (no cobalt), single crystal, quaternary, etc., and are also exploring the development direction of technology such as coating and doping, solid-state lithium battery materials, and lithium-rich manganese-based cathode materials, in order to further improve The energy density and fast charging performance of the 11.1v 3s lipo battery.
From 2021 to 205, the production capacity of graphite anodes will be relatively tight. The demand for graphite anodes from 2021 to 2025 is expected to be 78/109/146/196/2.7 million tons, respectively, while the production capacity at the beginning of the year was 53/81/133/213/2.59 million tons, respectively.
2020-2025 China Anode Material Enterprise Capacity Planning and Demand Forecast (10,000 tons, incomplete statistics)
Artificial graphite anode is the mainstream 11.1v 3s lipo battery anode material, occupying more than 80% of the overall market share, and the market share is still increasing.
Silicon-based materials combine the advantages of high conductivity and stability of carbon materials and high capacity of silicon materials, and have become the best choice for current power battery capacity enhancement. In the power field, 5%-10% silicon oxide and graphite are compounded, and nano-silicon and graphite are compounded in the 3C field, which can increase the energy density of the 11.1v 3s lipo battery by 5%-10%.
At present, silicon-based materials are mainly doped with artificial graphite in the form of additives, mainly used in cylindrical power 11.1v 3s lipo battery, and the products are exported more. Due to the immature technology of silicon-based materials, the problem of silicon volume expansion has not been solved, the preparation process is difficult and non-standard, and the price is expensive. Currently, it is mainly used in high-end cylindrical power 11.1v 3s lipo battery.
Summary of advantages and disadvantages of silicon-based materials
The scale of newly built electrolyte production capacity is relatively large, and there is a risk of structural excess in the short term. In 2022-2023, the production capacity will expand rapidly, and the supply of 11.1v 3s lipo battery electrolyte will ease. In 2024-2025, there is a risk of structural excess in corporate production capacity.
2020-2025 China's electrolyte production capacity and demand (10,000 tons) (incomplete statistics)
The new lithium salt has the possibility of steady improvement in the future. The most widely used new lithium salt is lithium bisfluorosulfonimide (LiFSI).
New lithium salts and additives can effectively improve the cycle and high and low temperature performance of 11.1v 3s lipo battery, which is the main strategy for the differentiated development of electrolyte products.
LiPF6 is still the most important lithium salt in the short term, but the permeability of new lithium salts such as LiFSI is expected to gradually increase. LiPF6 has problems such as poor thermal stability, sensitive to moisture, and easy to generate HF.
Therefore, the development of new lithium salts has become an important direction for the research and development of 11.1v 3s lipo battery electrolytes. LiFSI has the advantages of good high and low temperature performance and good thermal stability. developing.
The development and formulation of new additives will be the key to the company's core competitiveness and sustained profitability.
With the development of 2200mah 11.1v 3s lipo battery in the direction of high voltage and high nickelization, the required electrolyte formulation, especially the use of additives, will become more and more complicated. A small amount of additives can significantly improve the performance of the electrolyte, so the cost performance is very high. , the future will be the key to further enhance the competitiveness of enterprises and increase the added value of 11.1v 3s lipo battery.
The demand for lithium battery copper foil will grow at an average annual compound rate of more than 25% in the future, and there will be a structural excess risk in 2022-2024. With the rapid growth of demand for power 11.1v 3s lipo battery, the total shipments of lithium battery copper foil will increase significantly.
2020-2025 China lithium battery copper foil shipments and forecast (10,000 tons) (incomplete statistics)
11.1v 3s lipo battery copper foil extremely thinning direction is clear, that is to increase the energy density of the battery by compressing the volume. At present, 6um occupies the mainstream of the market. A few companies such as Nord Co., Ltd. and Telford Technology have supplied 4.5um copper foil products in small batches to the head 11.1v 3s lipo battery companies. Others such as Longdian Huaxin, Jiayuan Technology, Zhongyi Technology , Copper Crown Copper Foil, etc. have also accelerated the pace of R&D and mass production of 4.5um copper foil.
The production process of PET copper foil is to use magnetron sputtering or vacuum evaporation on the surface of PET plastic film with a thickness of 3.5-6μm to make a metal layer of 50-80nm, and then thicken the metal layer by water electroplating.
To 1μm, a composite metal foil with a total thickness of 5.5-8μm is produced to replace the traditional metal foil of 6-8μm. Its advantages are that it can increase energy density (5%-10%), improve safety (flame retardant structure), and its disadvantages are increased manufacturing costs (70% yield, increased process by vacuum magnetron sputtering or vacuum evaporation), internal The resistance increases (limits high-rate charge and discharge).
The separator is divided into wet separator and dry separator. The 11.1v 3s lipo battery wet separator occupies the dominant position in the market by virtue of its advantages of lightness, thinness and low self-discharge. The thickness of the wet-processed separator is lower than that of the dry-processed separator, which is beneficial to improve the energy density of the battery. The main advantages of 11.1v 3s lipo battery dry diaphragm are low cost, overcharge resistance and high safety.
In 2021, the market concentration of 11.1v 3s lipo battery wet process diaphragm will increase, with TOP3 accounting for 78%, mainly because the new production line of the head company of wet process diaphragm enterprises will be put into operation in the second half of the year, which will drive the increase in shipments.
2020-2022 China's wet process diaphragm and dry process diaphragm production capacity and demand (100 million square meters, incomplete statistics)
Diaphragm has a high entry barrier due to its substrate, coating slurry and process difficulty. The difficulty mainly comes from raw material selection and ratio, diaphragm equipment and precise control technology. Among them, new diaphragm substrate and coated diaphragm have become the key research and development. direction.
A new type of separator substrate to improve battery rate and safety. Polypropylene (PP) and polyethylene (PE) are the main matrix materials of the separator, but when they are close to the melting point, they will shrink and deform due to melting, resulting in a short circuit between the positive and negative electrodes of the 11.1v 3s lipo battery, and there is a danger of battery combustion or explosion.
Is developing to polyimide (PI), polyethylene terephthalate (PET), meta-aramid fiber (PMIA), polyvinylidene fluoride (PVDF), polyparaphenylene benzodiazole (PBO) and other synthetic materials to prepare non-woven new 11.1v 3s lipo battery separator substrate.
Wet coating can improve quality and efficiency. Coating can improve battery temperature resistance and safety. Vertical integration is the development trend of diaphragm enterprises. Base film can play a scale advantage, and coating film can play a differentiation advantage. Wet diaphragm coating material is mainly alumina coating, and there are PVDF coating, PVDF/alumina hybrid coating, alumina + PVDF superimposed composite coating, boehmite, aramid fiber, nanocomposite and other coatings. Layer category.
Well, the above is the whole content of the key technologies of the 2200mah 11.1v 3s lipo battery material. I believe that after reading the whole text, everyone has a good understanding of the positive electrode material, negative electrode material, electrolyte, copper foil and separator of the 2200mah 11.1v 3s lipo battery. I have a deeper understanding of the meaning, I hope the above content is helpful to you.
If you need to buy 2200mah 11.1v 3s lipo battery, you can go to our online store: Chinahobbyline.com, we provide a large number of cheap lipo batteries for sale, and the products are well received by customers.
If you want to get more information about 2200mah 11.1v 3s lipo battery, please check our previous articles:
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CNHL aim at providing high-quality Li-Po batteries and RC products to all hobby enthusiasts with excellent customer services and competitive prices
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