• Pouch Cell Battery Equipment Shipped to Sri Lanka
    Nov 9,2023.

    Pouch Cell Battery Equipment Shipped to Sri Lanka

    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.
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  • Analysis of Positive Electrode Materials for Sodium Ion Batteries
    Oct 20,2023.

    Analysis of Positive Electrode Materials for Sodium Ion Batteries

    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
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  • Pouch Cell Battery Equipment Machine Ready To Ship
    Sep 25,2023.

    Pouch Cell Battery Equipment Machine Ready To Ship

    1.Small Vacuum Slurry Mixer Machine AOT-AX-2000 2.53L Vacuum Drying Oven  For Lab Battery Raw Material Baking AOT-DZF-6050 3.Automatic Pouch Cell Stacking Machine AOT-MSK-111A-ES 4.Heating Sealer Machine For Pouch Cell Case Top And Side SealingAOT-TSS-200 5Aluminum Laminated Film Forming Machine AOT-MPF-200 6Pole Piece Electrode Die Cutting Machine  AOT-DC-80 7.2000W 20KHz Ultrasonic Spot Welder Machine AOT-USW-2000W 8. Pouch Cell Hot Press Shaping Machine AOT-HPS-200H
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  • What are the Causes of Excessive Battery Internal Resistance
    Sep 12,2023.

    What are the Causes of Excessive Battery Internal Resistance

    In terms of technology:   1. The positive electrode ingredient has too little conductive agent (the conductivity between materials is not good because the conductivity of lithium cobalt itself is very poor) 2. There is too much adhesive for the positive electrode ingredient. (Adhesives are generally polymer materials with strong insulation properties) 3. Excessive adhesive for negative electrode ingredients. (Adhesives are generally polymer materials with strong insulation properties) 4. Uneven distribution of ingredients. 5. Incomplete binder solvent during ingredient preparation. (Not completely soluble in NMP, water) 6. The density design of the coating slurry surface is too high. (Long ion migration distance) 7. The compaction density is too high, and the rolling is too compacted. (Excessive rolling may cause damage to the structure of active substances) 8. The positive electrode tab is not firmly welded, resulting in virtual welding. 9. The negative electrode ear is not firmly welded or riveted, resulting in false soldering or detachment. 10. The winding is not tight and the core is loose. (Increase the distance between positive and negative electrode plates) 11. The positive electrode ear is not firmly welded to the housing. 12. The negative electrode ear and pole are not firmly welded. 13. If the baking temperature of the battery is too high, the diaphragm will shrink. (Reduced diaphragm aperture) 14. Insufficient liquid injection amount (conductivity decreases, internal resistance increases quickly after circulation!) 15. The storage time after liquid injection is too short, and the electrolyte is not fully soaked 16. Not fully activated during formation. 17. Excessive leakage of electrolyte during the formation process. 18. Insufficient water control during the production process, resulting in battery expansion. 19. The battery charging voltage is set too high, causing overcharging. 20. Unreasonable battery storage environment.   In terms of materials: 21. The positive electrode material has high resistance. (Poor conductivity, such as lithium iron phosphate) 22. Impact of battery separator material (separator thickness, small porosity, small pore size) 23. Effects of battery electrolyte materials. (Low conductivity, high viscosity) 2 24. Positive electrode PVDF material influence. (high in weight or molecular weight) 25. The influence of positive electrode conductive material. (Poor conductivity, high resistance) 26. Effects of positive and negative electrode tab materials (thin thickness, poor conductivity, uneven thickness, and poor material purity) 27. Copper foil and aluminum foil materials have poor conductivity or surface oxides. 28. The riveting contact internal resistance of the cover plate pole is too high. 29. The negative electrode material has high resistance. 30. Deviation of internal resistance testing instruments.  
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  • Improving Battery Safety Technology From the Perspective of Electrolyte
    Aug 23,2023.

    Improving Battery Safety Technology From the Perspective of Electrolyte

    The electrolyte is in a harsh living environment. It faces the strong reducibility of the negative electrode and the strong oxidation of the positive electrode. Adding flame retardants to make the electrolyte non combustible and reduce its flammability is an effective way to improve the safety of batteries. However, this approach has limited improvement in battery safety, especially when the capacity of commercial batteries exceeds 100 ampere hours, and flame retardants cannot stop them,Because the combustion of batteries is contributed by combustible gases.   During the process of thermal runaway, there are two factors that lead to thermal runaway safety. One contributes to combustible gases, and the other contributes to oxygen and temperature.   The first is combustible gas: Flame retardants can only ensure that the electrolyte is not combustible in a liquid state, but the negative electrode reacts with the electrolyte to produce a large amount of reducing gas, which is flammable and provides a foundation for combustion.   The second is that the exothermic reaction of the battery body provides high temperature. The solid body generates oxygen when heated at around 200 degrees Celsius, and the solid part of the battery provides a high-temperature environment; Combustible gases themselves can burn, and the solid part provides a temperature, which inevitably leads to combustion.   By changing the reaction path between the electrolyte and the negative electrode, reducing the types and quantities of reducing gases, the safety of the battery can be improved from this perspective. In the thermal runaway test, there are three temperatures that represent different physical meanings:   T1 represents the battery entering the self heating stage, where the negative electrode reacts with the electrolyte to form a reducing gas. The reducing gas flows to the positive electrode, attacking the lattice of the positive electrode, causing a phase transition and oxygen release. Oxygen reacts with EC in the electrolyte, causing a temperature increase. Form T2, which is the triggering temperature for thermal runaway. The time spent in the temperature range of T1 and T2 is relatively long, and work can be done from passive protection. The positive and negative poles react violently, forming the highest temperature T3.   Regulation method: 1. Electric regulation: discharge control of the battery. Because the reaction is for electrons, through discharge, electrons are released, and if electrons are not released, reducing gases cannot be generated. 2. Gas regulation: Use intelligent exhaust valves to forcibly exhaust, avoiding crosstalk, accumulation, and combustion. 3. Cooling: Reduce reaction speed. 4. Poisoning agent: Release a poison agent on the composite collector to absorb the gas. 5. Reduce or block the path of combustible gas production. For example, EC free, or reducing the amount of EC electrolyte, such as perfluorinated electrolyt...
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  • Sodium ion Battery Material Na Metal Chips Shipment
    Aug 3,2023.

    Sodium ion Battery Material Na Metal Chips Shipment

    The working principle of Sodium-ion battery is the same as that of lithium ion battery, that is, during the charging and discharging process, lithium ion is inserted/de inserted and inserted/de inserted back and forth between the positive and negative electrodes, which is also called "rocking chair battery". Lithium ion batteries mainly rely on the movement of lithium ions between the positive and negative electrodes, using embedded lithium compounds as the positive electrode material. The working principle of Sodium-ion battery is: during charging, Na+is disembedded from the positive electrode and embedded into the negative electrode through battery electrolyte; When discharging, the opposite is true. Sodium battery, with its abundant resource reserves and significant advantages in low-temperature performance, rate performance, and cost compared to lithium battery, gradually demonstrates the potential for specific scenarios. AOTELEC provides sodium ion battery materials. Recently, sodium metal shipped to countries such as South Korea, the United States, Germany, etc. Sodium chips is specially designed for button batteries (2032, 2025, 2016) to use composite sodium sheets, with a diameter of 15.6mm, a thickness of 0.45 mm, and a purity of more than 99.7%. It adopts quadruple protection packaging technology, which can be stored for a long time and can be used as needed. Please contact me if you need sodium ion materials or sodium ion metal chips.
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  • Coin Cell Battery Machine and Sodium ion Battery Electrolyte Shipped To USA
    Jul 27,2023.

    Coin Cell Battery Machine and Sodium ion Battery Electrolyte Shipped To USA

    American clients need to establish a research laboratory for sodium ion batteries. At the end of last month, we received an order for coin battery production line equipment. Including Compact Vacuum Film Coating Machine, Hot Roller Press Machine,Coin Cell Crimper Machine,sodium ion metal chips, sodium ion battery electrolyte .etc. This is a packaging information image, all packaging is standard export packaging. Please find photos for your reference. AOTELEC provide a complete set of Sodium battery manufacturing equipment and materials,If you are interested, please contact me.
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  • AOTELEC Becomes a Tesla Supplier
    Jul 12,2023.

    AOTELEC Becomes a Tesla Supplier

    After more than a year of hard work, AOTELEC has become a supplier to Tesla. For over a year, we started sending samples for testing, passed the final test, and placed orders. Thank you to Tesla for recognizing AOTELEC's services and the quality of sodium battery materials. I hope to achieve more cooperation in the future. This order mainly sodium battery materials, including sodium matal chips and some other sodium battery materials. These sodium chips are used for sodium-ion coin cell battery research. The sodium chip is covered with 30um aluminum foil on one side as a support and current collector, and also plays the role of protecting the sodium. SThese sodium chips have uniform size, smooth and bright surface, and can be stored for a long period of time. For the thickness, the sodium is 0.45mm and the Al protection layer is 30um with a blue cover.
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