Citation: Tianpeng Chen, Yanmei Zou, Ying Xu, Pengpeng Chen, Shaohua Zeng, Kang Hua, Hang Liu, Yifeng Zhou, Longhai Zhang, Chaofeng Zhang. Porous organic polymers with tunable steric hindrance for high-performance lithium-ion batteries[J]. Chinese Chemical Letters, ;2026, 37(12): 111869. doi: 10.1016/j.cclet.2025.111869 shu

Porous organic polymers with tunable steric hindrance for high-performance lithium-ion batteries

School of Material Science and Engineering, College of Chemistry and Chemical Engineering, Institutes of Physical Science and Information Technology, Anhui University, Hefei 230601, China

yingxu@ahu.edu.cn

zlhedu@ahu.edu.cn

cfz@ahu.edu.cn

Received Date: 4 June 2025
Revised Date: 10 September 2025
Accepted Date: 21 September 2025
Available Online: 22 September 2025

Figures(5)

Organic polymers have been widely employed as electrode materials for secondary batteries due to their tunable structural flexibility and tailorable electrochemical properties. However, their inherent steric hindrance and dense molecular packing inevitably lower the utilization of active sites, thus resulting in unsatisfactory capacity. Hence, we designed and synthesized a para-substituted triazine-based polyamine (PAN-p) featuring both minimal steric hindrance and a highly porous architecture through rational molecular engineering. The reduced steric hindrance and increased porosity affords a significant improvement in redox reaction kinetics, thereby boosting the Li-storage performance. As a result, the PAN-p anode delivers a high reversible capacity of 780 mAh/g at 0.3 A/g and long life-span over 500 cycles without significant decay. Furthermore, theoretical calculations were conducted to unravel the relationships between steric hindrance and electrochemical performance of PAN derivatives based on the different substitution patterns (para-, meta-, and ortho-positions), offering insights into their distinct electrochemical behaviors. The work provides a promising design of high-performance organic electrode materials for efficient Li-storage.
- Lithium-ion batteries,
- Organic electrode materials,
- Triazine polyamine polymers,
- Structure and properties,
- Steric hindrance
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沈阳化工大学材料科学与工程学院沈阳 110142