Sodium nickel iron manganese oxide

Sodium nickel iron manganese oxide, with the chemical formula NaNi_₁⁄₃Fe_₁⁄₃Mn_₁⁄₃O₂ (NaNFM), is a high-performance cathode active material designed for sodium-ion batteries. This compound adopts an O3-type layered structure, where sodium ions occupy octahedral sites between layers of transition metal oxides. This configuration facilitates efficient sodium-ion transport, which is essential for achieving high capacities and excellent electrochemical performance. NaNFM exhibits reversible capacity when cycling between 2.0 V and 4.0 V, with a nominal operating voltage of approximately 3.1 V. Approximately 0.5 mol of Na⁺ ions are involved in the reversible deintercalation/intercalation reactions during charge-discharge cycles. This corresponds to a desodiated material stoichiometry of Na_₀.₅Ni_₁⁄₃Fe_₁⁄₃Mn_₁⁄₃O_₂ at 4.0 V. Charging beyond 4.0 V has been found to cause structural changes leading to irreversible capacity loss; therefore, it is recommended to limit the charging voltage to 4.0 V for optimal performance. Our NaNFM features a 3 wt% carbon coating to enhance electronic conductivity and improve rate performance. It is supplied as a fine powder with a typical particle size of 7 μm (D50) and a surface area of 1–2 m²/g. The material has a bulk density of 1.7 g/cm³. Please note that NaNFM is not air-stable and should be handled under inert conditions to preserve its properties and performance.

Sodium nickel iron manganese oxide (NaNFM) serves as an advanced cathode material for sodium-ion batteries, offering a sustainable and cost-effective alternative to traditional lithium-ion systems. With a high first cycle discharge capacity of approximately 125 mAh/g at 0.1C and operating within a voltage range of 2.0 V to 4.0 V, NaNFM is ideal for high-energy-demand applications such as electric vehicles and portable electronics. The robust structural stability of NaNFM minimizes volumetric changes during battery operation, reducing degradation and extending battery life. The material′s enhanced electronic conductivity, provided by the 3 wt% carbon coating, improves rate performance, making it suitable for applications requiring rapid charge and discharge cycles. By meeting the growing demand for reliable, efficient, and environmentally friendly energy storage solutions, NaNFM is a promising candidate for next-generation sodium-ion battery technologies.

High Specific Capacity (~125 mAh/g): Delivers high energy density for sodium-ion batteries.
O3-Type Layered Structure with 3 wt% Carbon Coating: Enhances ion mobility and conductivity for improved performance.
Operates between 2.0 V and 4.0 V (Nominal 3.1 V): Efficient energy utilization for high-demand applications.