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Jun , 17 2022
Advantages and Disadvantages Of Ternary Lithium Battery Many people say that the lithium iron phosphate battery should be fully charged, and the ternary lithium battery should be charged to more than 90%. The reason is that the voltage of the lithium battery will increase after it is fully charged, which will affect the activity of the electrolyte and positive and negative materials, resulting in ...
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Jul , 07 2022
The principle of ultrasonic metal welding is a special method of using the mechanical vibration energy of ultrasonic frequency to connect the same metal or dissimilar metal. When the metal is ultrasonically welded, it neither transmits current to the workpiece nor applies a high temperature heat source to the workpiece, but under static pressure, the frame vibration energy is converted into fricti...
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Jul , 26 2022
In the production process of lithium batteries, the compaction density has a great influence on the battery performance.Generally speaking, the compaction density is closely related to the specific capacity, efficiency, internal resistance, and cycle performance of the battery.the greater the compaction density, the greater the degree of extrusion between the material particles, the smaller the po...
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Aug , 09 2022
SEI (Solid Electrolyte Interphase) is also a solid electrolyte interface membrane. When a lithium-ion battery is charged and discharged for the first time, a small amount of polar aprotic solvent in the electrolyte undergoes a reduction reaction after gaining some electrons, and combines with lithium ions to form an interface film with a thickness of about 100-120nm, which is SEI. SEI is usually f...
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Aug , 18 2022
The sodium-ion battery mainly includes five parts: cathode electrode material, anode electrode material, battery electrolyte, battery current collector and battery separator. Cathode electrode material Cathode and anode materials affect key performance indicators such as energy density, power density, cycle life, and safety of Na-ion batteries, and are critical to battery performance. The mainstre...
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Oct , 11 2022
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Oct , 11 2022
The negative electrode material is made into a negative electrode sheet by mixing, coating, rolling, shooting, and drying.Use a lithium sheet as the positive electrode, assemble it into a button battery for testing, and calculate the gram capacity of the material by testing the capacity of the button battery. Required materials and equipment; Positive powder Electrolyte LB-5275 Carbon black KS-6 A...
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Nov , 01 2022
During the coating process, various defects may occur on the film surface, such as bubbles, fat edges, craters, polygonal depressions, orange peels, etc. Shrinkage cavities are one of the most common problems.The surface depression of the coating film, that is, the shrinkage cavity, is fundamentally caused by the surface tension gradient generated during the film formation. This phenomenon is call...
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Feb , 20 2023
1. Energy density; Since the density of solid is higher than that of liquid, if the same volume of solid electrolyte is used to replace the lithium battery electrolyte, the weight of the battery will increase, resulting in a decrease in the energy density (wh/kg) of the battery calculated by weight. The energy density of subsequent solid-state batteries will be significantly improved due to the us...
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Mar , 01 2023
The charging/discharging efficiency and cycle performance of conventional sodium-ion batteries will deteriorate when the temperature increases, which limits the application range. Therefore, it is necessary to solve the problem of poor cycle performance at high temperatures. The following are several ways to improve high temperature cycle performance. 1. Add a certain amount of vinylene carbonate,...
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May , 12 2023
During the mixing machine, transportation, and coating processes of the mixer, foreign objects such as dust or long flocs are mixed into the coating liquid or fall onto the wet coating surface,The surface tension of the coating at this location is affected by external forces, resulting in a change in intermolecular forces. The slurry undergoes a slight transfer, and after drying, a circular mark i...
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Jun , 16 2023
Lithium Battery Electrolyte has a significant impact on the charging and discharging performance (high and low temperature), lifespan (cyclic storage), and temperature applicability of batteries. Suitable solvents need high dielectric constant and low viscosity. Commonly used solvents are alkyl carbonates such as PC and EC, which have strong polarity, high dielectric constant, but high viscosity, ...
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