内页banner
Search
  • Lithium Battery Industry Overview 2022 Lithium becomes the fastest growing commercial secondary battery Lithium Battery Industry Overview 2022 Lithium becomes the fastest growing commercial secondary battery Sep 22, 2022
    1. Reasons for the rapid development of lithium batteries With most countries setting targets for carbon peaking and carbon neutrality, there is a broad consensus to develop new energy sources to replace carbon-based fossil energy. Chemical batteries are an effective supplement to new energy sources such as solar and wind power, and are also at the heart of zero-emission vehicles, and countries are committed to developing chemical batteries with high efficiency, safety, high capacity and long service life. Secondary batteries and fuel cells are heavily researched among chemical batteries due to their reusability, but secondary batteries are widely used due to their combined advantages of reusability, ease of development and mass production.   Lithium batteries are the fastest growing commercial secondary batteries in recent years due to their high energy density per unit mass and energy density per unit volume (under the same energy storage conditions, lithium batteries are lighter in mass and smaller in size than lead-acid batteries), as well as their high output voltage, low self-discharge rate, high cycle life and rapid rechargeability. Lithium batteries are mainly divided into lithium-ion and lithium-solid-state batteries. Given that lithium-ion batteries are more mature in terms of manufacturing process and commercial use, lithium-ion batteries are currently used on a large scale. However, lithium solid-state batteries have higher energy density per unit mass and energy density per unit volume, and may become another direction for large-scale commercial use of lithium batteries in the future.   2. Introduction to the lithium-ion battery industry chain The upstream enterprises in the lithium-ion battery industry chain are mainly raw material manufacturers. The raw materials for lithium-ion batteries mainly include: cathode materials, anode materials, diaphragm and electrolyte. Anode materials mainly include lithium manganate, lithium cobaltate, lithium iron phosphate and lithium cobalt-nickel-manganate (i.e. high nickel) ternary lithium. Negative electrode materials include carbon electrodes (graphite is the most widely used), titanium-based negative electrodes, tin alloys and silicon-based materials. Diaphragm materials are mainly polyolefin microporous membranes made of polyethylene (PE), polypropylene (PP), etc. The electrolyte is generally a solution obtained by dissolving the electrolyte salt in anhydrous organic solvents. The main electrolyte salts are lithium hexafluorophosphate (LiPF6) (the most widely used), LiFSI, etc. The solvents are ethylene carbonate (EC), dimethyl carbonate (DMC), etc., and additives are used in combination and co-solution.   The midstream enterprises in the lithium-ion battery industry chain are lithium-ion battery manufacturers, who mainly combine raw materials to produce lithium-ion battery cells of different sizes and capacities. The production process (cylindrical cells for example, square cells are similar): the positive materials (e.g. lithium cobalt-nickel-manganate) are mixed with conductive agents and glues and coated on aluminium foil, the negative materials (e.g. graphite) are mixed with conductive agents and glues and coated on copper foil, then baked to remove moisture. The positive and negative lugs are connected to the aluminium and copper foils respectively, electrolyte is injected and caps are welded to form the cells (i.e. a battery). The cells are connected in series and parallel (pure nickel connectors are used in the connection process) to form lithium battery packs and batteries, which are sold to downstream end customers.   Lithium-ion battery downstream: ① consumer electronics, mobile phones, laptops and other electronic products; ② power field, electric vehicles and urban rail locomotives, etc.; ③ energy storage field, for photovoltaic, wind power and other power plants supporting energy storage equipment, layout of long life, low cost, can provide smart grid energy storage solutions to improve the stability, safety and economy of the power system. Lastly, the recycling of lithium batteries: Nickel, cobalt, manganese, lithium and other valuable metals in used lithium-ion batteries are recycled and returned to the upper reaches of the lithium-ion battery industry chain.  

leave a message

leave a message
If you are interested in our products and want to know more details,please leave a message here,we will reply you as soon as we can.
Submit

home

products

Skype

WhatsApp