BN-P2C P/O Composite Sodium Ion Battery Cathode Material Sodium Nickel Iron Manganese Oxide

Sodium Nickel Iron Manganese Oxide BN-P2C P/O Composite Sodium Ion Battery Cathode Material

Overview​​

​​BN-P2C​​ is a ​​P/O hybrid-phase layered oxide cathode material​​ with the general formula NaNiₓFeᵧMn₁₋ₓ₋ᵧO₂, where P2 (trigonal prismatic Na⁺ sites) and O3 (octahedral Na⁺ sites) phases coexist. This dual-phase structure synergizes the advantages of both phases: ​​P2​​ offers fast Na⁺ diffusion and structural stability, while ​​O3​​ provides higher Na⁺ content and capacity.

​​Key Features​​

1. ​​Structure & Composition​​:

   • ​​P2/O3 intergrowth​​ mitigates irreversible phase transitions during cycling, enhancing structural integrity.
   • Transition metals (​​Ni​​, ​​Fe​​, ​​Mn​​) balance cost and performance: Ni boosts capacity, Mn stabilizes the framework, and Fe reduces costs.

2. ​​Performance Advantages​​:

   • ​​High reversible capacity​​: ~130–140 mAh/g at 0.1C, with stable output at 1C (~120 mAh/g).
   • ​​Improved cyclability​​: Hybrid-phase interfaces suppress layer sliding and volume changes, achieving >90% capacity retention after 50 cycles.
   • ​​Enhanced kinetics​​: P2-phase channels accelerate Na⁺ diffusion, enabling better rate capability.

3. ​​Challenges & Optimization​​:

   • ​​Air sensitivity​​: Surface residual alkali (e.g., NaOH) requires protective coatings (e.g., Al₂O₃, NaTi₂(PO₄)₃).
   • ​​High-voltage instability​​: Doping (e.g., Ti, Mg) stabilizes the lattice above 4.0 V vs. Na⁺/Na.

​​Applications​​

BN-P2C is tailored for ​​large-scale energy storage​​ (grid storage, EVs) due to its low cost, compatibility with existing manufacturing, and balanced energy/power density. Ongoing research focuses on ​​entropy engineering​​ and ​​morphology control​​ to further improve performance.

Specifications​

GUANGDONG XWELL TECHNOLOGY CO., LTD. is a high-tech enterprise specializing in intelligent equipment design, production and sales, providing mechanical engineering technology design and consulting services, electronic engineering design and consulting services. XWELL's core team was established in 2010 and officially established in June 2014. XWELL relies on South China University of Technology(SCUT), and the core team is composed of several doctors and masters from SCUT.

XWELL's main products are battery production line machines, such as spot welding machine, battery sorting machine, battery sticking machine, battery capacity grading machine, battery charge and discharge aging machine, battery general testing machine, and so on. The main application areas are new energy lithium batteries, automobiles and other industries, Especially in the fields of new energy, automotive wiring welding and other fields, XWELL has accumulated rich engineering experience and mastered a full set of core technologies, and can provide customers with a complete set of services from technology to equipment, helping customers to establish efficient and reliable production lines in the shortest time .