The electrochemical active carbonyl groups in cyclized diketones or conjugated carboxylates have been widely studied as electrode materials. But, the effects of non-conjugated carbonyl groups on the electrochemical properties have...
Organic molecules and polymers have been widely used in aqueous sodium‐ion capacitors. However, the difference in the reaction kinetics of the electroactive polymer and its monomer has been overlooked. In this study, a comparative study of the sodium‐ion storage performance and the reaction kinetics is performed. The poly(perylene diimides) which is named EDP exhibits decreased crystallinity, smaller particle size with a rough surface, higher specific capacitance, lower reduction potential, better cycling stability, and rate performance, compared with its monomer 3,4,9,10‐perylenetetracarboxylic dianhydride. The reaction kinetics study proves that the EDP shows faster sodium‐ion diffusion and more capacitive charge storage, which are responsible for the high‐rate capability.
The exploration of high-efficiency, cost-effective and earth-abundant non-noble metal electrocatalysts toward oxygen evolution reaction (OER) is of vital importance for the advancement of renewable energy conversion technologies. Herein, we report...
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