China has abundant lithium resources and a complete lithium battery industry chain, making it the world's largest lithium battery material and battery production base. In recent years, due to the demand for new energy vehicles, consumer electronics, and energy storage industries, lithium-ion battery materials have grown rapidly. Lithium ion batteries are mainly composed of four key materials: positive electrode material, negative electrode material, separator, and electrolyte, with cost proportions of 45%, 15%, 18%, and 10%, respectively. 1. Positive electrode material The positive electrode material accounts for the highest proportion of the total cost of lithium-ion batteries, and its performance directly affects the core performance indicators of lithium-ion batteries, such as energy density, safety, and cycle life. The positive electrode material serves as a lithium-ion source and has a high electrode potential, resulting in a high open circuit voltage for the battery. Structure diagram of lithium-ion batteries: Data source: Public information. According to the classification of positive electrode materials, lithium-ion batteries can be divided into technical routes such as lithium cobalt oxide, lithium manganese oxide, lithium iron phosphate(LiFePO4), and ternary materials. The current positive electrode materials mainly maintain a parallel pattern of lithium iron phosphate and ternary materials. The energy density improvement space of ternary material batteries is much greater than that of lithium iron phosphate cathode materials, while lithium iron phosphate batteries have the advantages of lower cost and relative safety. According to Baichuan Yingfu, China is expected to add a total of 1.625 million tons of lithium iron phosphate production capacity in 2023. From the perspective of market structure, the concentration of China's lithium iron phosphate industry is relatively high, with Hunan Yuneng and Defang Nanotechnology accounting for a relatively high proportion of production capacity, followed closely by manufacturers such as Changzhou Lithium Source, Hubei Wanrun, Rongtong High tech, Hunan Shenghua, Chongqing Terui, and Guoxuan High tech Power Energy. Ternary materials refer to positive electrode materials composed of nickel cobalt manganese or nickel cobalt aluminum, namely nickel cobalt manganese oxide (NCM) or nickel cobalt aluminum oxide (NCA). NCM ternary materials are the main ternary materials used by Chinese enterprises. Their advantages lie in energy density, and the higher the nickel content, the higher the specific capacity. They are widely used in new energy passenger vehicles. Due to its high cost, it is mainly used in mid to high end vehicle models. The future high nickel production has a large market space and is also a key direction for technology research and industrialization of various ternary cathode material manufacturers. As of 2022, multiple positive electrode manufacturers have achieved the shipment of 9 serie...

The injection process is a crucial step in the manufacturing process of lithium batteries, and the debugging of the injection machine is of great significance for ensuring battery performance and production efficiency. This article will discuss in detail the debugging of the lithium battery manufacturing process infection machine. 1. The importance of debugging the liquid injection machine The liquid injection machine is an important equipment in the manufacturing process of lithium batteries, and the accuracy of its debugging directly affects the performance and safety of the battery. Through debugging, it can be ensured that the various parameters of the infusion machine are set reasonably, ensuring the stability and consistency of the infusion process, thereby improving the quality and production efficiency of the battery. 2. Operation process a. Equipment inspection: Conduct a comprehensive inspection of the battery electrolyte filling machine, including electrical systems, pneumatic systems, pipeline connections, etc., to ensure that the equipment is in good condition. b. Parameter setting: According to the production process requirements, set the various parameters of the injection machine, such as injection volume, injection speed, pressure, etc. c. Debugging and operation: Start the liquid injection machine under no-load conditions, check whether the equipment runs smoothly and whether all functions are normal. Then conduct a load test to observe whether the equipment can operate normally according to the set parameters. d. Production verification: Select a small amount of batteries for liquid injection testing to verify the consistency of liquid injection effect and battery performance. e. Optimization and adjustment: Based on the production verification results, fine tune the parameters of the injection machine to achieve the best effect. 3. Parameter settings a. Injection volume: Set an appropriate injection volume based on the battery model and capacity requirements to ensure battery performance and safety. b. Liquid injection speed: Reasonably set the liquid injection speed to ensure uniform internal structure of the battery and avoid problems caused by too fast or too slow liquid injection. c. Temperature: Set an appropriate temperature according to the production process requirements to ensure the stability of lithium battery materials and injection media. 4. Precautions 1. Safe operation: During the debugging process, safety operating procedures should be followed to ensure personnel safety and equipment stability. 2. Parameter monitoring: closely monitor the changes in various parameters of the injection machine, and promptly handle any abnormalities found. 3. Cleaning and maintenance: Keep the infusion machine and its surrounding environment clean, and regularly maintain the equipment. 4. Recording and reporting: Detailed recording of the debugging process, timely reporting of abnormal situations fo...

Dear friends: The Spring Festival of 2024 is approaching, thank you for your strong support and trust in us all along. According to company regulations, the holiday  is 2024/2/3-2024/2/17, 15days. Officially starting work on February 18, 2024 We apologize for any inconvenience caused during this period and sincerely apologize for your understanding! In 2024, we will continue to provide you with good products and services. Grateful for having you, moving forward all the way!

  Lithium batteries have completely changed every field from consumer electronics to electric vehicles, and separators play a crucial role in their performance and safety. Battery separator is one of the materials used in lithium batteries   The battery separator, anode electrode material, cathode electrode material, and electrolyte are the most important lithium-ion battery materials, accounting for approximately 4% of the total cost of lithium-ion battery materials. The lithium battery separator has a large number of tortuous and interconnected micropores, which can ensure the free passage of battery electrolyte ions and form a charging and discharging circuit. Its main function is to isolate the anode and cathode electrodes, preventing battery short circuits.   At the same time, ensure that lithium ions pass through the microporous channels normally during charging and discharging, ensuring the normal operation of the battery. The performance of the battery separator determines the key characteristics of lithium-ion batteries, such as internal resistance, capacity, cycling performance, and charge discharge current density.   At present, the commercialized lithium battery separators mainly include polyethylene (PE) separators, polypropylene (PP) separators, and PE and PP composite multilayer microporous membranes. PE battery separator has high strength and a wide processing range. PP membranes have high porosity, breathability, and mechanical properties. Ordinary 3C batteries mainly use single-layer PE separator or single-layer PP battery separator.   Power batteries generally use PE/PP double-layer battery separators, PP/PP double-layer separators, or PP/PE/PP three-layer separators. However, polyolefin membranes have very obvious drawbacks, such as thermal stability and insufficient wettability of electrolytes, which makes the coating and modification of polyolefin membranes a trend direction. Production process of battery separator   The production process of battery separators is mainly divided into two categories: wet method and dry method. The production process of lithium-ion battery separators includes raw material formula and rapid formula adjustment, microporous preparation technology, and independent design of complete equipment. Among them, microporous preparation technology is the core of lithium-ion battery separator preparation process, which can be divided into dry stretching and wet stretching according to the type of process.   Dry separators have high safety and low cost, and are often used in large lithium iron phosphate power batteries. Due to its thin thickness and high porosity, wet diaphragm has a higher uniformity of pore size and higher permeability. Compared with dry separators, it has certain advantages in mechanical performance, breathability, and physicochemical properties, so it is more widely used in ternary batteries that focus on energy density.   Membrane coating is the ...

“We wish you a merry Christmas, We wish you a merry Christmas and a happy new year...” When you hear this familiar melody, it's Christmas time. Christmas is a holiday celebrated on December 25th each year to commemorate the birth of Jesus Christ. It is one of the most important holidays for Christians worldwide and is also a traditional holiday celebrated by many non-Christians. During Christmas, people often decorate Christmas trees, exchange gifts to express their love and blessings for each other. Furthermore, many families also host grand Christmas dinners, inviting relatives and friends to celebrate Christmas together. Christmas is a joyful and meaningful holiday. And AOTELEC (lithium ion battery equipment manufacturer) wish all of our friends and clients a merry Christmas! After Christmas, New Year's Day is approaching. New Year's Day is the first day of the lunar calendar. It represents a new beginning when people send off the old days and welcome the new ones. We would like to take this opportunity to thank you for your kind support all this while. Our company will be closed from Dec 30 to Jan 1, in observance of the New Year's Day. Any orders will be accepted but will not be processed until Jan 2 , the first business day after the New Year's Day. Sorry for any inconvenience caused.

AOTELEC has packaged a batch of lithium-ion battery materials and laboratory equipment for lithium-ion batteries, and is preparing to send them to the port. This batch of lithium-ion battery materials mainly includes lithium iron phosphate, coin cell battery cases, etc. The equipment includes 2 sets vacuum ovens,  electronic balance, crimping machine, and a ball mill. We can provide lithium-ion battery materials, including cathode materials, anode materials, as well as sodium battery materials.

Today, the pouch cell battery machine lab line shipped to Sri Lanka ,the equipment mainly includes the following types:  Vacuum drying over, Battery mixing machine, Film coating machine, Battery electrode calendering machine, e Ectrode cutting machine, Die cutting machine for Pouch cell, Battery stacking machine, Ultrasonic spot welding machine for battery tab, Heat sealing machine for Pouch case, Vacuum pre-sealing machine for touch cells, s etc     AOT battery also provides various battery materials, including cathode materials, anode materials,  battery cases, battery separators, electrolytes, etc. Solid state battery materials: NPSCl (Na5.5PS4.5Cl1.5) LLZO,NASICON etc.; Sodium ion battery materials: Prussian blue Prussian white, hard carbon, Sodium metal disks chips . sodium foil etc.

1. Layered oxide cathode material Layered oxides  in sodium ion batteries material have inherent cost advantages, not only because these materials can learn from the highly mature solid-state or co precipitation methods commonly used in lithium-ion batteries to achieve low-cost large-scale production, but also because they have a rich selection of active elements. The chemical formula of layered oxide positive electrode materials for sodium ion batteries can be expressed as NaxTMO2 (x ≤ 1, where TM is one or more of the 3D transition metals such as Ni, Mn, Fe, Co, Cu, etc.). By studying the coordination environment of sodium ions and the stacking mode of oxygen, layered oxides can be classified into the following categories: 2. Polyanionic positive electrode material Polyanion positive electrodes have better thermal stability and thus better safety, but their biggest drawback is their low electronic conductivity, which prevents them from charging and discharging under high currents, and their specific capacity is low. Therefore, its conductivity is often improved by coating and doping, thereby improving its electrochemical performance. The general formula of polyanionic compounds can be expressed as NaxMy [(XOm) n –] z, where M is an electrically active transition metal and X is a non-metallic element such as P, S, Si, etc. Among them, sodium vanadium phosphate [Na3V2 (PO4) 3] material with NASCON (Na Super ionic conductor) structure has high voltage and specific capacity. 1.3 Prussian Blue Cathode Materials The Prussian blue cathode material has a perovskite like structure and a face centered cubic structure. The molecular formula is AxM [Fe (CN) 6] y · zH2O (0