Doped Mn-rich Phosphate Cathode

Fewer defects, less hysteresis

Li doping tailors Mn-O coordination to reduce intrinsic antisite defects, suppressing voltage hysteresis for higher energy density.

Zhao, Junmei · Feng, Yan · Xu, Chunliu · Li, Xiaowei · Zhao, Chen · Yang, Liangrong · Yang, Chao · Hu, Yong-Sheng

Journal of the American Chemical Society 2026

Specifications

Energy density

{'zh': '426', 'en': '426'} W h kg-1

Advantages

Higher energy density

Li+ doping reduces Mn/Na□ antisite defects and facilitates Na+ diffusion, increasing energy density from 331 to 426 W h kg-1.

Fewer intrinsic antisite defects

Li+ doping with low valence and electronegativity regulates Mn-O coordination to create a Na-rich environment, effectively reducing Mn/Na□ intrinsic antisite defects during synthesis.

Applications

• Na-ion battery cathodes：Provides high-energy-density, low-hysteresis cathodes for Na-ion batteries
• High-energy batteries：Doping raises energy density to 426 W h kg-1 for high-energy batteries
• Electrochemical energy storage：Improved Na+ diffusion and suppressed hysteresis enhance electrochemical storage efficiency
• Advanced energy storage materials：Coordination chemistry regulation offers a design route for advanced storage materials