Realizing Dual-Mode Zinc-Ion Storage of Generic Vanadium-Based Cathodes via Organic Molecule Intercalation

ACS Nano, Journal Year: 2024, Volume and Issue: 18(44), P. 30896 - 30909

Published: Oct. 26, 2024

Intercalation engineering is a promising strategy to promote zinc-ion storage of layered cathodes; however, impeded by the complex fabrication routes and inert electrochemical behaviors intercalators. Herein, an organic imidazole intercalation proposed, where V2O5 NH4V3O8 (NVO) model materials are adopted verify feasibility intercalator in improving zinc capabilities vanadium-based cathodes. The intercalated molecules could not only expand interlayer spacing strengthen structural stability serving as extra "pillars" but also provide coordination sites for via reaction between Zn2+ C═N group. This gives rise dual-mode ion mechanism favorable performances. As result, imidazole-intercalated delivers capacity 179.9 mAh g-1 after 5000 cycles at 20 A g-1, while NVO harvests high output 170.2 700 2 g-1. work anticipated boost application potentials cathodes aqueous batteries.

Language: Английский

Zinc Ion Transport Kinetics in Zinc‐based Batteries and Its Regulation Strategy

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

Published: April 2, 2025

Abstract Rechargeable zinc‐ion batteries (ZIBs) have gained significant attention as potential next‐generation energy storage systems, owing to their inherent safety, environmental benignity, and cost‐effectiveness. However, the substantial electrostatic repulsion of Zn ion results in a sluggish kinetics for its insertion into cathode material. Meanwhile, formation hydrated ionic groups with increased mass volume aqueous electrolyte further hampers transport ability zinc ions, significantly impacting overall electrochemical performance (including capacity, density, rate‐capability, cyclability) batteries. This review systematically summarized recent progress regulation strategy kinetics. The as‐reported mechanisms are introduced ZIBs (Zn 2+ insertion/extraction mechanism, H + or 2 O/ co‐insertion/extraction conversion reaction coordination mechanism). Then, material design fast including soft lattice construction, doping effects, defect introduction, morphology control, interface is summarized. Finally, it concluded future research directions, such high‐entropy design, multi‐scale simulation, machine study, providing roadmap developing high‐performance at ultralow operation temperatures.

Language: Английский

Ca2+-Intercalation Improving the Electrochemical Cyclicity of the Ammonium Vanadate Cathode for Aqueous Zinc-ion Batteries

Electrochimica Acta, Journal Year: 2025, Volume and Issue: unknown, P. 146277 - 146277

Published: April 1, 2025

Language: Английский