Li7P3S11 electrolyte belongs to sulfide solid electrolytes, commonly known as LPS. His most prominent advantage is his extremely high lithium-ion conductivity. This high conductivity is due to its unique crystal structure, which provides spacious and connected migration channels for lithium ions. Synthesis Pathway of Li7P3S11 Electrolyte Li7P3S11 electrolytes exhibit high room-temperature ionic conductivity, making them highly promising solid-state electrolytes. Therefore, exploring a low-cost, scalable synthesis pathway for high-performance Li7P3S11 solid-state electrolytes is particularly crucial. Currently, there are three primary synthesis methods for this electrolyte: molten extraction, mechanical ball milling, and liquid-phase synthesis. Research has revealed that crystalline Li7P3S11 cannot stably exist at room temperature. Through a combination of computational and experimental studies, it was found that Li7P3S11 can crystallize at 553 K (280°C), so at room temperature, it typically exists in an amorphous glassy or partially crystallized glass-ceramic state. Glass-ceramic Li7P3S11 generally cannot be synthesized in a single step and is primarily obtained by mechanically ball-milling to produce glassy Li7P3S11, followed by high-temperature heat treatment. Upon cooling, partially crystallized Li7P3S11 precipitates within the glass phase, forming a composite of crystalline and amorphous phases—this mixture constitutes the glass-ceramic Li7P3S11. - Melting extraction method Melting extraction method is a simple and rapid method for preparing Li7P3S11 solid electrolyte. It mainly involves preparing the raw materials according to the stoichiometric ratio, heating them at high temperature for a period of time in a evacuated quartz tube, and then extracting them at low temperature with ice water to form glassy Li7P3S11; Finally, the obtained glass state Li7P3S11 is heated to the crystallization temperature, and after cooling, a partial crystalline state is formed in the glass state Li7P3S11, namely the glass ceramic state. - Mechanical ball milling method Mechanical ball milling is a process in which raw materials are placed in a ball milling jar in a certain proportion, and a certain mass of ball milling beads are added. Then, under the conditions of controlling the ball milling speed and time, a solid-state reaction is carried out. The mechanical ball milling method, also known as high-energy ball milling, involves four processes: mixing, crushing, amorphization, and solid-state reaction, which cause high-energy collisions between raw materials through the high-speed rotation of ball milling beads. Compared with the melt extraction method, high-energy ball milling has the advantages of low processing temperature and fewer impurities, and is currently the main method for preparing Li7P3S11 electrolyte. However, materials prepared by high-energy ball milling are usually in the glass state, and subsequent heat treatment is necessary...

1.Overcoming the capacity bottleneck and achieving fast and cost-effective production One of the core functions of lithium battery manufacturing equipment is to significantly increase battery production efficiency while reducing energy consumption and costs. In the pulping process, in addition to the ultrasonic cavitation pulping equipment developed by Zhongke Leishun (which triples the production capacity and reduces energy consumption by 78%), there are also high-speed dispersers and double-planet mixers, which can quickly mix the positive electrode materials (lithium cobalt oxide, lithium iron phosphate), anode materials (graphite, silicon-based), binders, and solvents evenly, preventing agglomeration that could affect subsequent processes. Each unit can process tens of tons of slurry per hour. In the drying process, in addition to the flat infrared drying equipment developed by Leiso New Materials (which reduces energy consumption by 50% and shrinks the oven by 30%), vacuum freeze-drying machines and hot air circulation ovens are also widely used, which can precisely remove moisture from the current sheet and battery cells, ensuring stable battery performance. In the sheet manufacturing process, high-precision coating machines can evenly coat the slurry on copper and aluminum foils, with a coating speed of over 100 meters per minute, which is 2 times more efficient than traditional equipment; the roller press can compress the sheet to the specified thickness, ensuring uniform energy density, and each unit can process tens of thousands of meters of sheets per day. These devices enable the simultaneous realization of "high production, energy saving, and space-saving", helping enterprises gain a competitive edge in the market. 2. Strictly control product quality and reduce defects and losses The quality of lithium batteries directly affects safety and lifespan during use, and manufacturing equipment is the key to quality control. In the welding process, Jieopt's laser welding equipment (with an accuracy of 20 micrometers) can handle the welding of tabs and cell casings, and can detect the depth of fusion in real time to avoid false welding; there is also an ultrasonic welding machine, which is suitable for low-temperature welding of electrode sheets and tabs, reducing material damage. In the inspection process, Guoyuan's AI visual inspection equipment can automatically identify defects such as burrs, scratches, and missed coatings on the electrode sheets, with an inspection accuracy rate of 99.9%; the X-ray inspection machine can penetrate the cell to check the alignment of the internal electrode sheets and the welding quality, avoiding safety hazards caused by internal defects. In the assembly process, the fully automatic winding machine and laminating machine can precisely wind or laminate the positive and negative electrode sheets and the separator, with an error control of micrometer level, ensuring the regularity of the cell structure; the ...

Recently, another customized glove box of the company has completed the testing and debugging process and has been safely loaded onto the logistics vehicle. This equipment went from receiving the order to completing the delivery in accordance with the process, every step of which was carried out in a step-by-step manner, solely to enable customers to use reliable equipment as soon as possible. This glove box is made of 304 stainless steel, which is sturdy and durable. The purification and pressure control systems inside the box are very reliable, capable of controlling the oxygen and moisture content very low, making it suitable for lithium battery research, semiconductor manufacturing and other work with high environmental requirements. Before leaving the factory, we put in a lot of effort: conducting continuous 72-hour operation tests to check for any leaks, calibrating the stability of temperature and humidity, and conducting 12 checks in total, just to be afraid that the equipment might have problems when delivered to the customer, and to ensure that the customer can use it with confidence.  In the field of lithium battery equipment, we place great emphasis on customized services. We can completely adjust according to the specific needs of the customers. For instance, the production capacity of lithium batteries varies for different customers. Some require small-scale research and development, while others need large-scale production. We can adjust the working efficiency and size of the equipment based on the production capacity, ensuring that the equipment perfectly matches the production rhythm of the customers. If the customer has special requirements for the process, such as specific operation procedures during electrode preparation, we can also optimize the operation interface of the equipment, making the commonly used functions more convenient to use. We may even change the material and flexibility of the gloves to make the operation for workers more convenient and safer.

Electrode manufacturing equipment: Laying the foundation for battery performance As the core component for energy storage in lithium batteries, the preparation accuracy of electrodes directly affects the energy density and cycle life of batteries. Electrode manufacturing equipment is the key to controlling this process. In the positive electrode material coating stage, high-precision coating machines control the movement of the coating head through servo motors, evenly applying the positive electrode slurry onto aluminum foil. The coating thickness error can be controlled within ±1 micron - a precision equivalent to 1/50 of the diameter of a human hair. Domestic equipment manufacturer Prolong Intelligent has developed a double-sided synchronous coating machine that not only increases the coating efficiency to 1.8 times that of traditional equipment but also adjusts the coating thickness in real time through an infrared online monitoring system, effectively avoiding battery capacity decline caused by uneven coating. Rolling equipment is responsible for the "densification and shaping" process. After coating, the electrode sheets need to be rolled to the specified thickness by a rolling machine. This process must ensure that the electrode materials are closely combined while reserving reasonable pores for lithium ion migration. Yinheng Technology's intelligent rolling machine is equipped with a pressure feedback adjustment system that can automatically adjust the rolling pressure according to the characteristics of different electrode materials, keeping the density deviation of the electrode sheets within 2%, significantly improving the charging and discharging efficiency and cycle stability of lithium batteries. Industry data shows that electrode sheets produced by advanced rolling equipment can extend the cycle life of lithium batteries by more than 30%. Cell assembly equipment: Ensuring battery safety and consistency Cell assembly is the "precision assembly stage" of lithium battery production, covering key processes such as winding / stacking, packaging, and electrolyte injection. Each step requires precise operation by dedicated equipment. In the winding process, fully automatic winding machines wind the positive electrode, negative electrode, and separator into cells at a speed of 30-50 revolutions per minute, with a positioning accuracy of ±0.05 millimeters, ensuring that the positive and negative electrodes are perfectly aligned and avoiding short-circuit risks due to misalignment. Prolong Intelligent's multi-station winding machine also has a "defect recognition" function, which uses a machine vision system to detect scratches and impurities on the surface of the electrode sheets in real time. Once a problem is detected, the machine stops immediately, keeping the cell defect rate below 0.1%. Electrolyte injection equipment is directly related to the safety and performance stability of lithium batteries. As the "bridge" for lithium ion trans...

On the occasion of the 76th anniversary of the founding of the People's Republic of China and the approaching National Day holiday, all the staff of AOTELEC extend our most sincere holiday greetings to you and your team! We are grateful for your long-term trust and support. Your recognition has always been an important driving force for our progress. According to the legal holidays in China, our company's National Day holiday period is from October 1st to October 8th. During the holiday, to ensure that your business needs can be responded to promptly, we have established a special service team: If you have any urgent business inquiries, you can communicate through the 24-hour contact number of the dedicated customer manager; for routine order inquiries, document coordination and other needs, the staff will reply within 24 hours. Although the holiday has arrived, our service will not stop. We will ensure the smooth progress of your cooperation matters with an efficient and professional attitude. Once again, we wish you a happy holiday, good health and prosperous career!

In battery laboratories, where innovations in energy storage materials and designs are tested and refined, the choice of support structures and current collectors is critical to unlocking performance breakthroughs. Metal foams—porous, lightweight materials with high specific surface areas and excellent conductivity—have emerged as indispensable tools in this setting. Unlike dense metal sheets, their interconnected pore networks (typically 50–98% porosity) enable better active material loading, faster ion diffusion, and improved thermal management, making them ideal for studying electrode behavior, optimizing battery architectures, and developing next-generation energy storage systems. This article explores four key metal foams—nickel, copper, aluminum, and titanium—and their unique roles in advancing battery research.   1. Nickel Foam: The Workhorse for Cathode Research Nickel foam is the most widely used metal foam in battery laboratories, thanks to its high electrical conductivity (~1.4 × 10⁷ S/m), corrosion resistance in oxidizing environments, and compatibility with common cathode chemistries. Its 3D porous structure (pore sizes ranging from 100–500 μm) provides a robust scaffold for loading cathode active materials, addressing a major challenge in lab-scale electrode fabrication: ensuring uniform material distribution and stable electrical contact.   In lithium-ion battery (LIB) research, nickel foam is frequently used as a current collector for high-capacity cathodes like lithium nickel manganese cobalt oxide (NMC) and lithium nickel cobalt aluminum oxide (NCA). For example, lab teams testing NMC 811 (a high-nickel cathode prone to particle cracking) often coat the material onto nickel foam instead of traditional aluminum foil. The foam’s pores trap NMC particles, reducing mechanical stress during charge-discharge cycles and minimizing capacity fade. A 2024 study from Stanford’s Battery Lab demonstrated that NMC 811 electrodes on nickel foam retained 89% of their initial capacity after 500 cycles, compared to 72% on aluminum foil—data attributed to the foam’s ability to buffer volume changes.   Nickel foam also plays a pivotal role in lithium-sulfur (Li-S) battery research. Li-S cathodes suffer from "polysulfide shuttling," where soluble sulfur species migrate to the anode and reduce efficiency. Researchers use nickel foam as a host for sulfur, leveraging its large surface area to anchor sulfur particles and its nickel active sites to catalyze polysulfide conversion. Lab experiments show that sulfur-loaded nickel foam cathodes can achieve specific capacities of 1,200 mAh/g—nearly 80% of sulfur’s theoretical capacity—far exceeding the performance of sulfur-coated aluminum foil.   In sodium-ion battery (SIB) research, nickel foam supports cathodes like sodium nickel manganese oxide (NaNi₁/3Mn₁/3Co₁/3O₂), with its porosity accelerating sodium-ion diffusion in the larger Na⁺ ion (compared to Li⁺). Battery labs often tailor n...

In the burgeoning landscape of energy storage, sodium - ion batteries have emerged as a promising alternative to their lithium - ion counterparts, primarily due to the abundant availability of sodium resources globally. Among the various materials being explored for sodium - ion batteries, Sodium Vanadium Phosphate (Na₃V₂(PO₄)₃, abbreviated as NVP) has garnered significant attention in recent times.   The Promise of Sodium - Ion Batteries As the world races towards a more sustainable energy future, the demand for efficient and cost - effective energy storage solutions is skyrocketing. Lithium - ion batteries, which currently dominate the market, face challenges such as limited lithium reserves and high costs associated with lithium extraction. Sodium, on the other hand, is the sixth most abundant element in the Earth's crust and is widely available in seawater and salt mines. This abundance makes sodium - ion batteries an attractive option for large - scale energy storage, including grid - scale applications and electric vehicles.   NVP: Structure and Basics NVP belongs to the family of polyanionic phosphate materials. It features a stable NASICON(Na Super Ionic CONductor) - type three - dimensional structure. This unique structure provides several advantages. The open framework of the NASICON structure allows for fast sodium - ion diffusion, creating rapid diffusion channels for sodium ions to move in and out during the charging and discharging processes of the battery. Additionally, the strong covalent bond interactions between the PO₄³⁻ groups contribute to the high structural stability of NVP. During charge - discharge cycles, NVP experiences only a relatively small volume change of about 8.26%, which is crucial for ensuring the long - term cycle stability of sodium - ion batteries.     Electrochemical Performance of NVP In terms of its electrochemical performance, NVP exhibits distinct characteristics. During charging and discharging, NVP shows two prominent electrochemical platforms. One is near 1.6 V, corresponding to the V²⁺/V³⁺ redox couple, and the other is around 3.4 V, associated with the V³⁺/V⁴⁺ redox reaction. At 3.4 V, a reversible two - phase reaction occurs, represented by the equation Na₃V₂(PO₄)₃↔NaV₂(PO₄)₃, which can deliver a specific capacity of approximately 118 mAh g⁻¹.   However, like many electrode materials, NVP also has its limitations. The (PO₄) tetrahedra in the NVP lattice have low electrical conductivity, which isolates the V atoms, resulting in poor intrinsic electronic conductivity. Moreover, during repeated charge - discharge cycles, NVP is susceptible to significant structural stress and volume changes. These factors lead to slow sodium - ion diffusion kinetics, severely restricting its cycling stability and rate performance, and thus hindering its widespread commercial application.   Recent Advancements in NVP - Based Materials   1. Carbon Material Modification One of the...

The manufacturing process of sodium-ion batteries can generally be divided into several key steps: raw material preparation, cathode and anode material production, electrolyte and separator preparation, electrode fabrication, cell assembly, and finished product testing and inspection. Compared to the production process of lithium-ion batteries, sodium-ion batteries differ in raw material selection and certain process steps, but the overall workflow is similar. Their packaging forms are alike (cylindrical, pouch, prismatic aluminum shells, etc.), their production processes largely overlap, and their production lines are compatible (including electrode manufacturing and cell assembly). The main distinction lies in the fact that sodium-ion batteries can use aluminum foil as the anode current collector, allowing both cathode and anode tabs to be connected using aluminum tabs. This simplifies the tab welding process. Raw Material Preparation The main raw materials for sodium-ion batteries include cathode materials, anode materials, electrolyte, separators, and battery casings. The selection and quality of these materials directly impact the battery's performance and lifespan. Cathode and anode materials are the core components of sodium-ion batteries, and their performance differences determine the battery's energy density and charge-discharge efficiency. Electrolyte serves as the medium for sodium-ion transport within the battery. Separators are used to isolate the cathode and anode, preventing short circuits. Battery cases are critical components that protect the battery structure and ensure sealing integrity. Cathode Material Preparation The cathode material is a critical component of sodium-ion batteries. Commonly used cathode materials include polyanionic compounds, layered oxides, and Prussian blue analogs. Among these, polyanionic cathode materials have become a research focus due to their stable structure and excellent cycling performance. Synthesis methods include solid-state reactions, sol-gel processes, and hydrothermal methods. The electrochemical performance of cathode materials can be enhanced by optimizing synthesis conditions and employing doping modifications. Anode Material Preparation Common anode materials include carbon-based materials and alloy-based materials. Carbon-based materials, known for their high conductivity and stability, are widely used in sodium-ion batteries. Preparation methods such as pyrolysis and chemical vapor deposition (CVD) are employed, followed by coating and drying processes. The electrochemical performance of anode materials can be improved by controlling pore structure and specific surface area. Electrolyte and Separator Preparation The composition of the electrolyte directly affects the ionic conductivity and stability of the battery. The electrolyte primarily consists of a solute, solvent, and additives—typically sodium salts dissolved in organic solvents. Common solvents include esters and ethers, wh...