Lithium Manganese Oxide (LiMn₂O₄) is a widely used cathode material in lithium-ion batteries, known for its combination of good safety, thermal stability, and reasonable performance characteristics. It is a transition metal oxide that is part of the broader family of lithium metal oxide materials used for rechargeable batteries.
Formula: LiMn₂O₄.
Appearance: It is typically a fine powder, which is usually gray or off-white in color.
Density: Around 4.2–4.5 g/cm³.
Crystal Structure: Spinel structure, where manganese atoms are arranged in a 3D framework, allowing lithium ions to easily intercalate during cycling.
Energy Density: Lithium manganese oxide offers moderate energy density compared to other cathode materials like lithium cobalt oxide (LCO) or lithium nickel cobalt manganese (NCM). The typical capacity of LiMn₂O₄ is in the range of 120-130 mAh/g.
Voltage Range: LiMn₂O₄ operates within a voltage window of approximately 3.0–4.2 V, similar to many other lithium-ion cathodes.
Cycle Life: LiMn₂O₄ has a good cycle life and is generally considered stable over many charge/discharge cycles, with minimal degradation of capacity.
Thermal Stability: One of the significant advantages of lithium manganese oxide is its high thermal stability, which makes it less prone to overheating or thermal runaway compared to other materials like lithium cobalt oxide (LCO). This provides better safety, especially in applications where high heat generation is a concern.
Lithium-Ion Batteries: LiMn₂O₄ is commonly used in lithium-ion batteries for applications requiring moderate energy density and high safety, such as power tools, hybrid electric vehicles (HEVs), and medical devices.
Electric Vehicles (EVs): Due to its thermal stability, lithium manganese oxide is used in certain EVs and electric buses, especially when the focus is on safety and longevity over extreme energy density.
Energy Storage Systems (ESS): Lithium manganese oxide is used in large-scale energy storage systems where safety, stability, and cost-effectiveness are more critical than raw energy capacity.
Consumer Electronics: It is found in some portable devices and rechargeable power sources where moderate energy density is acceptable.
VI HALBLEITERMATERIAL GmbH (VIMATERIAL) employs a stringent quality assurance system to ensure the reliability of our product quality. Strict quality control is implemented throughout the entire production chain, and for defective products, we strictly enforce the principle of rework and redo. Each batch is released only after passing detailed specification tests.
Every batch of our materials is independently tested, and, if necessary, we send samples to certified companies for testing. We provide these documents and analysis certificates with the shipment to certify that our products meet the required standards.
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