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Determined to win ‖ Sun Jie's team from Tianjin University: Micro-multifunctional additives significantly improve the ultra-high voltage performance of 4.8 V nickel-rich cathode and silicon-oxygen anode batteries  In  December  2024  , Professor Sun Jie, Dr. Zhang Yiming of Tianjin University and Dr. Wang Lue of Guolian Automotive Power Battery Research Institute Co., Ltd.  published an online paper in the journal Advanced Energy Materials (impact factor > 24.4) titled "  Trace  Multifunctional  Additive  Enhancing  4.8  V Ultra-High Voltage Performance of Ni-Rich Cathode and SiO  x   Anode Battery  ". The study proposed a functional group integration strategy for the molecular structure design of additives, and developed a single, trace multifunctional electrolyte additive through the active synergy of multiple functional groups and electronic structures.  2-  Cyano  -3-  fluoropyridine...

Effects of Conductive Agents and Binders on Compression and Compactability of NCM Powders In the field of energy development, lithium-ion batteries have gradually become an important component of power sources (medical equipment, entertainment equipment, computers, communication equipment, electric vehicles, spacecraft, etc.) due to their advantages of low cost, environmental friendliness, high specific energy, light weight, and no memory effect. Lithium-ion battery positive electrode active materials often use transition metal oxides, such as layered lithium cobalt oxide, lithium nickel oxide, lithium nickel cobalt oxide, or lithium iron phosphate, and negative electrodes often use graphite, silicon-based materials, etc. as active materials. During the development and production process of lithium-ion batteries, it was found that the conductivity of the positive and negative active material particles cannot meet the requirements of the electron migration rate. Therefore, conductive a...

Interfacial friction makes the vertical structure of lithium metal batteries summary A practical high-energy-density lithium metal battery requires a free-standing lithium metal anode with a thickness of less than 20 μm, but it is difficult to achieve large-scale processing of thin layers and free-standing structures due to the low melting point and strong diffusion creep effect of lithium metal. In this study, a free-standing l ithium chips  with a thickness of 5 to 50 μm was formed on the lithium metal surface by mechanical rolling, which was determ ined by the in-situ tribochemical reaction between lithium and zinc dialkyl dithiophosphate (ZDDP). A layer of organic/inorganic hybrid interface (about 450 nm) was formed on the lithium metal surface with extremely high hardness (0.84 GPa) and Young's modulus (25.90 GPa), which not only enables scalable processing of  l ithium chips , but also realizes dendrite-free lithium metal anode by inhibiting dendrite growth. The rolled l...

  Single-sided pole piece manufacturing method This issue introduces the production process of single-sided pole pieces to help you obtain satisfactory data results in experimental tests. 1. Stirring The first step is the preparation of the slurry. The equipment used are "high-speed variable frequency mixer" and " beaker ". High speed variable frequency mixer http://www.canrd.com/shop/product/getProductById?id=70181bae88854c448709d2bd94ddfc8b

  1.  Basic introduction of lithium-ion button battery Button lithium -ion battery is a rechargeable battery that uses lithium ions as charge carriers. It consists of positive electrode, negative electrode, electrolyte and diaphragm. The positive electrode usually uses lithium compounds, such as lithium cobalt oxide , lithium iron phosphate, etc. The negative electrode generally uses graphite material. The electrolyte is an organic solution containing lithium salts that can provide a medium for ion transmission. The diaphragm is used to isolate the positive and negative electrodes to prevent short circuits.

In-depth! Detailed explanation of lithium-ion battery formation technology Lithium-ion battery production requires formation to achieve electrode wetting and full activation of electrode materials. During the first charge, as lithium ions are embedded in the negative electrode, the electrolyte components undergo a reduction reaction at the negative electrode to form a stable solid electrolyte interface film (SEI film) to prevent irreversible consumption of electrolyte and lithium ions in subsequent cycles. Therefore, this technology is of extraordinary significance to battery performance. The effect of formation directly affects the subsequent performance of lithium-ion batteries, including storage performance, cycle life, rate performance and safety. This article focuses on the technical parameters/methods of formation and its impact on battery performance.

Why do electrodes crack during lithium battery coating? How to solve it? 1. Detailed reasons for the cracking of the pole piece 1. Slurry problem     The slurry viscosity is not suitable:      - Viscosity is too high: The slurry has poor fluidity, making it difficult to spread evenly during coating and prone to cracking.      - Viscosity is too low: The slurry tends to flow, resulting in uneven coating thickness and cracking after drying.    Uneven slurry dispersion:      - Active materials, conductive agents and binders are not fully dispersed, resulting in local stress concentration.      - Agglomerated particles exist in the slurry, forming weak points during coating.