Sodium copper nickel iron manganese oxide

Sodium copper nickel iron manganese oxide (NCNFMO) is a high-performance cathode active material designed for sodium-ion batteries. Related to the sodium iron manganese oxide (NFM) family, NCNFMO is engineered to adopt the O₃-type layered structure through doping with small amounts of copper and lithium, which stabilize the O₃ phase. In this structure, sodium ions occupy octahedral sites between layers of transition metal oxides, facilitating efficient sodium-ion transport with minimal volume change—essential for long-lasting electrochemical performance. Our NCNFMO exhibits a reversible capacity of approximately 100 mAh/g when cycling between 2.0 V and 4.0 V, with a nominal operating voltage of around 3.4 V vs. Na^⁺/Na. The addition of nickel and copper improves discharge capacity and raises the nominal voltage, enhancing the material′s electrochemical characteristics. To enhance electronic conductivity and rate performance, our NCNFMO features a 3 wt% carbon coating. It is supplied as a fine powder with a typical particle size of 15–20 μm (D50) and a surface area of 1–2 m^²/g. The material has a bulk density of 1.1 g/cm^³. Please note that NCNFMO is not air-stable and should be handled under inert conditions to preserve its properties and performance.

Sodium copper nickel iron manganese oxide (NCNFMO) serves as an advanced cathode material for sodium-ion batteries, offering a sustainable and cost-effective alternative to traditional lithium-ion systems. Its O₃-type layered structure enhances sodium-ion mobility, resulting in high specific capacities and excellent cycling stability. With a first cycle discharge capacity of approximately 100 mAh/g at 0.1C and operating within a voltage range of 2.0 V to 4.0 V, NCNFMO is ideal for high-energy-demand applications such as grid energy storage, electric vehicles, and portable electronics. The robust structural stability of NCNFMO minimizes volumetric changes during battery operation, reducing degradation and extending battery life. The inclusion of nickel and copper not only improves discharge capacity but also raises the nominal voltage, enhancing overall battery performance. 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.

Suggested Procedure:

• Cu- and Ni-doping: boosts energy density (~100 mAh/g at 3.4 V vs. Na⁺/Na)
• O₃-type layered structure: improves cyclability
• 3 wt.% carbon coating: enhances rate performance