Barbital-derived chelating ligands for interface regulation and stabilization of Zn metal anodes for aqueous zinc-ion batteries.

Wu, Pengju; Jia, Wenbin; Sun, BeiBei; Yang, Shengnan; Wu, Ying; Tang, Fengqin; Hu, Libing

Wu, Pengju; Jia, Wenbin; Sun, BeiBei; Yang, Shengnan; Wu, Ying; Tang, Fengqin; Hu, Libing.

Afiliación

Wu P; Engineering Laboratory of Chemical Resources Utilization in South Xinjiang of Xinjiang Production and Construction Corps, College of Chemistry and Chemical Engineering, Tarim University, Alar 843300, Xinjiang, P. R. China. wuying@sina.com.
Jia W; Engineering Laboratory of Chemical Resources Utilization in South Xinjiang of Xinjiang Production and Construction Corps, College of Chemistry and Chemical Engineering, Tarim University, Alar 843300, Xinjiang, P. R. China. wuying@sina.com.
Sun B; Analysis and Testing Center, Tarim University, Alar 843300, Xinjiang, P. R. China.
Yang S; Engineering Laboratory of Chemical Resources Utilization in South Xinjiang of Xinjiang Production and Construction Corps, College of Chemistry and Chemical Engineering, Tarim University, Alar 843300, Xinjiang, P. R. China. wuying@sina.com.
Wu Y; Engineering Laboratory of Chemical Resources Utilization in South Xinjiang of Xinjiang Production and Construction Corps, College of Chemistry and Chemical Engineering, Tarim University, Alar 843300, Xinjiang, P. R. China. wuying@sina.com.
Tang F; Engineering Laboratory of Chemical Resources Utilization in South Xinjiang of Xinjiang Production and Construction Corps, College of Chemistry and Chemical Engineering, Tarim University, Alar 843300, Xinjiang, P. R. China. wuying@sina.com.
Hu L; Engineering Laboratory of Chemical Resources Utilization in South Xinjiang of Xinjiang Production and Construction Corps, College of Chemistry and Chemical Engineering, Tarim University, Alar 843300, Xinjiang, P. R. China. wuying@sina.com.

Dalton Trans ; 53(35): 14887-14896, 2024 Sep 10.

Article en En | MEDLINE | ID: mdl-39189150

ABSTRACT

ABSTRACT

Aqueous zinc-ion batteries (AZIBs) have inherent merits, such as a low price, good safety and high volumetric capacity, and have promising potential for widespread applications. However, the unexpected issues posed by both water-induced side reactions and the uncontrollable growth of zinc dendrites on the zinc anode-electrolyte interface have significantly hindered the widespread application of AZIBs. In this work, barbital (Bb), which has two amide groups, was introduced into a ZnSO4 electrolyte to create a Bb@ZnSO4 electrolyte. The hydrolysis of the amide groups resulted in the formation of strong polar groups (carboxyl and amino), which could efficiently anchor zinc ions. Specifically, through the derivation of Bb, it was possible to adjust the Zn2+ solvation structure, decreasing the coordinated active SO42-/H2O and promoting the anchoring of these species on the surface of the zinc anode. This process provided electrostatic shielding and isolates the SO42-/H2O, demonstrating an interface regulating effect and synergistic solvation. Therefore, Bb could mitigate electrochemical corrosion and facilitate dendrite-free homogeneous zinc deposition. As a consequence, the assembled asymmetric Znâ¥V2O5 full cell utilizing the Bb@ZnSO4 electrolyte showed highest specific capacities of 294.9 and 92.7 mA h g-1 at 0.1 and 1 A g-1, much higher than the Znâ¥V2O5 full cell with the ZnSO4 electrolyte, which delivered specific capacities of 161.1 and 3.0 mA h g-1 at the same current densities. These findings promise to realize the practical application of Bb as an efficient additive in high-performance AZIBs.

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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Dalton Trans Asunto de la revista: QUIMICA Año: 2024 Tipo del documento: Article Pais de publicación: Reino Unido

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