Naphthalene Diimide and Pyromellitic Diimide Networks as Cathode Materials in Lithium-ion Batteries: on the Instability of Pyromellitic Diimide.

ABSTRACT: Aromatic diimides such as naphthalene diimide (NDI) and pyromellitic diimide (MDI) are important building blocks for organic electrode materials. They feature a two-electron redox mechanism that allows for energy storage. Due to the smaller size of MDI compared to NDI its theoretical capacity is higher. Studies on MDI-based small molecule and linear polymer electrodes indicate that MDI is unstable, yet the origin of instability remains unclear. Herein, two cross-linked networks of NDI and MDI are designed. The polymers, termed PNDI-EG and PMDI-EG, are synthesized via cationic polymerization of vinyl ethylene glycol-functionalized NDI and MDI monomers. The cross-linked structures preclude extrinsic degradation pathways (e.g., dissolution in the electrolyte), and thereby facilitate the inves

SUBMITTER: Matsidik R 

PROVIDER: S-EPMC11925328 | biostudies-literature | 2025 Apr

REPOSITORIES: biostudies-literature