Breakthrough in Nanotechnology: Advanced Interlayer Material for Lithium-Sulfur Batteries

Researchers from South China Normal University have made a significant discovery in the field of nanotechnology, proposing the use of Co4N nanoparticles embedded in N-doped carbon pores as an interlayer material for lithium-sulfur batteries. This innovative material demonstrates strong chemical adsorption of polysulfide and catalytic activity in polysulfide conversion, leading to improved battery performance. The study has been peer-reviewed and published in the journal Nano Energy.

Key Takeaways:

• The researchers propose the use of Co4N nanoparticles embedded in N-doped carbon pores as an interlayer material for lithium-sulfur batteries, which are highly demanded due to their high energy density and long cycle life.
• The advanced interlayer material retains a capacity of 604.6 mAh/g after 1000 cycles at a current density of 1 C, with a minimal capacity decay of only 0.026% per cycle.
• The synergistic effect of N-doping and Co4N electrocatalyst enhances redox catalysis, leading to improved battery performance.
• The interlayer material prevents the agglomeration of Co4N nanoparticles during synthesis and battery cycling, ensuring stable battery operation.
• The researchers demonstrate the feasibility of achieving a high mass loading with 5.5 mg/cm2.
• The study has been funded by the Guangdong Basic and Applied Basic Research Foundation and the Hong Kong Scholars Program 2022.
• The research team includes Zhenyu Xing, Weifeng Li, Meijuan Xiao, Jiatong Jiang, Yanqi Li, Shiming Li, Xiaomin Lin, Xiao Zhang, Daoling Peng, Siu Wing Or, and Shuhui Sun.

Statistics:

• Capacity of 604.6 mAh/g after 1000 cycles at a current density of 1 C: 0.026% capacity decay per cycle
• Capacity of 604 mAh/g at a higher current density of 5 C: stable battery operation
• Mass loading: 5.5 mg/cm2
• Funding: Guangdong Basic and Applied Basic Research Foundation, Hong Kong Scholars Program 2022
• Research team: 11 authors from South China Normal University

Sources:

• Co 4 n Nanoparticles Embedded In N-doped Carbon Pores: Advanced Interlayer Material for Lithium-sulfur Batteries. Nano Energy, 2025;142
• NewsRx. New Findings from South China Normal University in the Area of Nanoparticles Reported (Co 4 n Nanoparticles Embedded In N-doped Carbon Pores: Advanced Interlayer Material for Lithium-sulfur Batteries). Nanotechnology Weekly. September 1, 2025; p 1775.