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A Small Molecular Symmetric All-Organic Lithium-Ion Battery.

Zengyu LiQingqing JiaYuan ChenKun FanChenyang ZhangGuoqun ZhangMing XuMinglei MaoJing MaWenping HuChengliang Wang
Published in: Angewandte Chemie (International ed. in English) (2022)
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.
Keyphrases
  • solid state
  • small molecule
  • water soluble
  • ionic liquid
  • high resolution
  • room temperature
  • label free