Bridged‐Ring Structure Facilitating Ultrahigh Utilization of Active Sites in Organic Molecules for High‐Performance Aqueous Batteries DOI

Xinhao Xue,

Lintong Hu,

Minjie Shi

et al.

Advanced Energy Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 24, 2025

Abstract Organic electrode materials have attracted extensive attention for their tunable properties, diverse structure, and environmental sustainability. However, the actual reported capacities are often significantly lower than theoretical capacities. Here, 6‐cyano‐substituted triptycene‐fused quinacrizine (6CNTFQ) is synthesized, an organic imine molecule characterized by a bridged‐ring structure 3D π‐conjugated plane, as negative aqueous batteries. 6CNTFQ exhibits impressive capacity of 398 mAh g −1 at 0.1 A (0.25 C), demonstrating 88% capacity, exceptional stability over 10 000 cycles. The performance result presence multiple accessible active sites, conjugated planes within framework, robust bridged ring structure. During discharge process, K + preferentially binds to C≡N sites form 6CNTFQ‐K, subsequently binding C═N site produce 6CNTFQ‐12K. Ni(OH) 2 //6CNTFQ cells attain maximum 190 1 , rate performance, remarkable cycle exceeding cycles, energy density 162 Wh kg . This work sheds light on featuring extended

Language: Английский

Bridged‐Ring Structure Facilitating Ultrahigh Utilization of Active Sites in Organic Molecules for High‐Performance Aqueous Batteries DOI

Xinhao Xue,

Lintong Hu,

Minjie Shi

et al.

Advanced Energy Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 24, 2025

Abstract Organic electrode materials have attracted extensive attention for their tunable properties, diverse structure, and environmental sustainability. However, the actual reported capacities are often significantly lower than theoretical capacities. Here, 6‐cyano‐substituted triptycene‐fused quinacrizine (6CNTFQ) is synthesized, an organic imine molecule characterized by a bridged‐ring structure 3D π‐conjugated plane, as negative aqueous batteries. 6CNTFQ exhibits impressive capacity of 398 mAh g −1 at 0.1 A (0.25 C), demonstrating 88% capacity, exceptional stability over 10 000 cycles. The performance result presence multiple accessible active sites, conjugated planes within framework, robust bridged ring structure. During discharge process, K + preferentially binds to C≡N sites form 6CNTFQ‐K, subsequently binding C═N site produce 6CNTFQ‐12K. Ni(OH) 2 //6CNTFQ cells attain maximum 190 1 , rate performance, remarkable cycle exceeding cycles, energy density 162 Wh kg . This work sheds light on featuring extended

Language: Английский

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