
Advanced Science, Journal Year: 2025, Volume and Issue: unknown
Published: April 26, 2025
Abstract Recently, research on aqueous zinc‐ion batteries (AZIBs) has always focused improving the energy storage performance by increasing number of active sites, particularly in designing organic/polymer materials with a high density sites. However, does higher sites necessarily induce enhanced performance? To verify this issue, we have designed two linear polymers, where TAPT‐DHBQ contains an additional pair (carbonyl groups) compared to TABQ‐DHBQ, theoretical specific capacities 545.26 and 379.14 mAh g −1 , respectively. Interestingly, experimental results deviated these polymers being comparable, measuring be 325 (TABQ‐DHBQ) 280 (TAPT‐DHBQ). This is attributed competition effect between neighboring which leads decreased utilization As result, Zn//TABQ‐DHBQ ZnI 2 electrolyte additive exhibited 618 360 at current densities 1 10 A along 678.6 Wh kg (1 ). The finding underscores importance uniform electron cloud distribution cathode for achieving efficient AZIBs.
Language: Английский