A Small Molecular Symmetric All‐Organic Lithium‐Ion Battery

作者：Zengyu Li, Qingqing Jia, Yuan Chen, Kun Fan, Chenyang Zhang, Guoqun Zhang, Ming Xu, Minglei Mao, Jing Ma, Wenping Hu, Chengliang Wang · 发表于：Angewandte Chemie International Edition · 年份：2022 · DOI：10.1002/anie.202207221 · 被引用次数：123 · 研究领域：Advanced Battery Materials and Technologies、Advancements in Battery Materials、Advanced battery technologies research

Abstract The structural designability of organic electrode materials makes them attractive for symmetric all‐organic batteries (SAOBs) by virtue of different plateaus. However, quite a few works have reported all‐organic batteries and it is still challenging to develop a high‐performance organic material for SAOBs. Herein, a small molecule, 2,3,7,8‐tetraaminophenazine‐1,4,6,9‐tetraone (TAPT), is reported for SAOBs. The rich C=O and C=N groups ensure the high capacity at both plateaus for C=O/C−O and C=N/C−N redox reactions, which are hence utilized as cathodic and anodic active centers respectively. Moreover, the presence of C=O, C=N and NH 2 groups resulted in plentiful strong intermolecular interactions, leading to layered structures, insolubility and high stability. The rich functional groups also facilitated the chelation of N and O with Li cations and hence benefited the storage of Li cations. The electrochemical performances of TAPT‐based SAOBs outperformed all of the previously reported SAOBs.