Organic carbonyl electrode materials have attracted considerable attention as high-energy density electrode materials for environment-friendly metal-ion batteries comprising no heavy metals. The synthesis and investigation of a new electroactive carbonyl-based polymer compound poly(naphthalene diimide-alt-benzoquinone) (NDI-BQ) derived from 1,4,5,8-naphthalenetetracarboxylic dianhydride and 2,5-diaminobenzoquinone are reported. The best NDI-BQ//Li cells deliver practical capacity of 168 mAh g −1 , which is higher than the generally achieved capacity for the most common inorganic materials such as LiFePO 4 or LiCoO 2 . Considering the fact that practical capacity represents just ≈50% of the theoretical value for NDI-BQ, there is a considerable potential for further improvements via multiparametric optimization of the cathode composition, morphology, and deposition technology.
- Li-ion batteries
- organic cathode materials