Coordination and Hydrogen Bond Chemistry in Tungsten Oxide@Polyaniline Composite toward High-Capacity Aqueous Ammonium Storage.

ABSTRACT: Aqueous ammonium ion batteries (AAIBs) have garnered significant attention due to their unique energy storage mechanism. However, their progress is hindered by the relatively low capacities of NH₄ ⁺ host materials. Herein, the study proposes an electrodeposited tungsten oxide@polyaniline (WO_x@PANI) composite electrode as a NH₄ ⁺ host, which achieves an ultrahigh capacity of 280.3 mAh g^-1 at 1 A g^-1, surpassing the vast majority of previously reported NH₄ ⁺ host materials. The synergistic interaction of coordination chemistry and hydrogen bond chemistry between the WO_x and PANI enhances the charge storage capacity. Experimental results indicate that the strong interfacial coordinati

SUBMITTER: Mao S 

PROVIDER: S-EPMC11657061 | biostudies-literature | 2024 Dec

REPOSITORIES: biostudies-literature