VO with a nanosheet structure was employed as a cathode material for aqueous zinc metal batteries. VO delivered a high specific capacity of 425 mA h g, outstanding rate performance and durable cycling with high capacity retention of 86% after 3000 cycles. Moreover, X-ray diffractometer (XRD), X-ray photoelectron spectroscopy (XPS) and X-ray absorption near-edge structure (XANES) were employed to ascertain the reaction mechanism of Zn storage.
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http://dx.doi.org/10.1039/d4cc00850b | DOI Listing |
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November 2024
Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions (Ministry of Education), School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan, 453007, P. R. China.
J Colloid Interface Sci
September 2024
MOE Key Laboratory for UV Light-Emitting Materials and Technology, Northeast Normal University, Changchun, Jilin 130024 PR China; Department of Chemistry, Northeast Normal University, Changchun, Jilin 130024 PR China. Electronic address:
Interlayer intercalation engineering shows great feasibility to improve the structure stability of the layered oxides. Although high Zn-storage capability has been attained based on the pillar effect of multifarious intercalants, an in-depth understanding the synergistic effect of intercalated multiple metal ions is still in deficiency. Herein, alkali metal ion K, alkaline earth metal ion Mg and trivalent metal ion Al are introduced into the VO interlayer of VO.
View Article and Find Full Text PDFJ Colloid Interface Sci
June 2024
College of Chemistry and Environmental Engineering, International Joint Research Center for Molecular Science, Shenzhen University, Shenzhen, Guangdong 518060, PR China. Electronic address:
Ammonium vanadate with stable bi-layered structure and superior mass-specific capacity have emerged as competitive cathode materials for aqueous rechargeable zinc-ion batteries (AZIBs). Nevertheless, fragile NH…O bonds and too strong electrostatic interaction by virtue of excessive NH will lead to sluggish Zn ion mobility, further largely affects the electro-chemical performance of ammonium vanadate in AZIBs. The present work incorporates polypyrrole (PPy) to partially replace NH in NHVO (NVO), resulting in the significantly enlarged interlayers (from 10.
View Article and Find Full Text PDFACS Nano
February 2024
Institute for Superconducting and Electronic Materials, Australian Institute for Innovative Materials, University of Wollongong Innovation Campus, North Wollongong, New South Wales 2500, Australia.
Rechargeable aqueous zinc ion batteries (AZIBs) have gained considerable attention owing to their low cost and high safety, but dendrite growth, low plating/stripping efficiency, surface passivation, and self-erosion of the Zn metal anode are hindering their application. Herein, a one-step molecular engineering strategy for the simultaneous construction of hierarchical MoS double-layer nanotubes (MoS-DLTs) with expanded layer-spacing, oxygen doping, structural defects, and an abundant 1T-phase is proposed, which are designed as an intercalation-type anode for "rocking-chair" AZIBs, avoiding the Zn anode issues and therefore displaying a long cycling life. Benefiting from the structural optimization and molecular engineering, the Zn diffusion efficiency and interface reaction kinetics of MoS-DLTs are enhanced.
View Article and Find Full Text PDFDalton Trans
November 2023
Institute of Energy Materials and Electronic Device, School of Materials Science and Engineering, Chang'an University, Xi'an 710061, China.
Aqueous zinc ion batteries (ZIBs) are considered as promising energy storage devices in the post-lithium-ion era, due to their high energy density, low cost, high safety, and environmental benignity, however their commercialization is hindered by the sluggish diffusion kinetics of cathode materials due to the large hydrate Zn radius. In this work, we propose a unique structure inheritance strategy for preparing BiS micro-straws in which a metal-organic framework (MOF) denoted as Bi-PYDC (PYDC = 3,5-pyridinedicarboxylate) with a string of [BiO] chains is judiciously selected as the structure-directing template to induce the formation of micro-straws based on a topochemical reaction. The distinctive hollow structure significantly enhances the ionic storage kinetics.
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