Amin Kamran, Baker Benjamin C, Pan Long, Mehmood Warisha, Hao Zhang, Nawaz Raziq, Wei Zhixiang, Faul Charl F J
CAS Key Laboratory of Nanosystems and Hierarchical Fabrication, National Center for Nanoscience and Technology, Chinese Academy of Sciences, Beijing, 100190, P. R. China.
School of Chemistry, University of Bristol, Bristol, BS8 1TS, UK.
Adv Mater. 2025 Jan;37(3):e2410262. doi: 10.1002/adma.202410262. Epub 2024 Dec 2.
This paper presents a study on a novel porous polymer based on triphenylamine (LPCMP) as an excellent cathode material for lithium-ion batteries. Through structural design and a scalable post-synthesis approach, improvements in intrinsic conductivity, practical capacity, and redox potential in an organic cathode material is reported. The designed cathode achieves a notable capacity of 146 mAh g⁻¹ with an average potential of 3.6 V, using 70% active material content in the electrode. Additionally, through appropriate structural design, the capacity can increase to 160 mAh g. Even at a high current density of 20 A g⁻¹ (360C), the cathode maintains a capacity of 74 mAh g⁻¹, enabling full charge within 10 s. A high specific energy density of 569 Wh kg⁻¹ (at 0.1 A g⁻¹) is combined with a very high power density of 94.5 kW kg⁻¹ (at 20 A g⁻¹ corresponding to a specific energy density of 263 Wh kg⁻¹) surpassing the power density of graphene-based supercapacitors. It exhibits highly stable cyclic performance across various current densities, retaining almost 95% of its initial capacity after 1000 cycles at 5.5C. This work presents a significant breakthrough in developing high-capacity, high-potential organic materials for sustainable, high-energy, and high-power lithium-ion batteries.
本文介绍了一项关于基于三苯胺的新型多孔聚合物（LPCMP）作为锂离子电池优良正极材料的研究。通过结构设计和可扩展的合成后方法，报道了有机正极材料在本征电导率、实际容量和氧化还原电位方面的改善。所设计的正极在电极中活性材料含量为70%时，实现了146 mAh g⁻¹的显著容量，平均电位为3.6 V。此外，通过适当的结构设计，容量可增加到160 mAh g。即使在20 A g⁻¹（360C）的高电流密度下，该正极仍保持74 mAh g⁻¹的容量，能够在10秒内充满电。569 Wh kg⁻¹的高比能量密度（在0.1 A g⁻¹时）与94.5 kW kg⁻¹的非常高的功率密度（在20 A g⁻¹时，对应比能量密度为263 Wh kg⁻¹）相结合，超过了基于石墨烯的超级电容器的功率密度。它在各种电流密度下都表现出高度稳定的循环性能，在5.5C下1000次循环后保留了几乎95%的初始容量。这项工作在开发用于可持续、高能量和高功率锂离子电池的高容量、高电位有机材料方面取得了重大突破。
