Truxenone-Based COF Cathode
High-Capacity, Long-Cycle
Extended π-conjugation and multiple active sites empower this COF electrode with high reversible capacity; integrated with CNTs, it serves as both cathode and anode in the first all-COF sodium-ion battery.
Weng, Junying · Tianyu, Xue · Wenyong, Yuan · Honghe, Yu · Mingyu, Xie · Haimin, Liu · Mu, Jinglin · Zhou, Jin · Zhou, Pengfei
Advanced Energy Materials 2026
Specifications
- Specific Capacity
- {'zh': '227.3', 'en': '227.3'} mAh g<sup>−1</sup>
- Specific Capacity
- {'zh': '152.8', 'en': '152.8'} mAh g<sup>−1</sup>
- Reversible Capacity
- {'zh': '154.8', 'en': '154.8'} mAh g<sup>−1</sup>
- Energy Density
- {'zh': '144.1', 'en': '144.1'} Wh kg<sup>−1</sup>
Advantages
High capacity
Extended π-conjugation and multiple C═O/C═N sites enable 227.3 mAh g⁻¹.
High rate
152.8 mAh g⁻¹ at 10 A g⁻¹, enabled by CNT network for fast charge transfer.
Long cycle life
154.8 mAh g⁻¹ after 4000 cycles at 2 A g⁻¹, meeting long-duration storage needs.
Applications
- Sodium-Ion Batteries：Provides high-capacity, long-life organic cathode for practical SIBs.
- Organic Electrode Materials：Molecular design overcomes conductivity and active-site limits, replacing inorganics.
- Covalent Organic Frameworks：Extended π-conjugation and multiple sites boost COF electrode performance.
- CNT Composite Electrodes：CNT network enhances conductivity for high rate and long cycle.