Work

Fabrication zinc oxide nanotubular arrays on the surface of zinc‑bismuth alloy for high-performance aqueous zinc-ion battery anodes

Year: 2025

Type: article

Abstract: In this work, zinc oxide (ZnO) nanotubular arrays were fabricated on the surface of zinc-bismuth (Zn-Bi) alloys with different bismuth contents (0.5, 1, 1.5, and 2 wt%) using an anodization technique. The influence of bismuth content on the morphology of the ZnO nanotubular arrays was explored. By optimizing anodization parameters in an electrolyte containing 50 mM sodium bicarbonate, ethylene glycol, and volume ratio of water to ethylene glycol is 9:1. ZnO nanotubular arrays with uniform nanotubular diameters (395.2 ± 53.6 nm) were synthesized on the zinc surface. The increasing of content of bismuth reduced the average nanotubular diameter from 487.2 ± 54.2 nm for ZnO (Zn-0.5Bi) to 293.4 ± 26.5 nm for ZnO (Zn-2Bi). When used as an anode, the anodized Zn-Bi alloy demonstrated good cycling stability in aqueous zinc-ion battery, maintaining a capacity of 95.04 mAh g-1 after 1000 cycles at 1 A g-1. The anodized Zn-Bi electrode also exhibited excellent cycling stability in a symmetric cell, with an overpotential of only 28.5 mV at 1 mA cm-2. This work provides a promising protocol for designing highly stable zinc-based anodes.

Source: Electrochemistry Communications

DOI: 10.1016/j.elecom.2025.108055

Authors: Jing Yao, Anqi Zhao, Luning Wang

Institutions: State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Liaoning Academy of Materials

Language: English

Topic: Advanced battery technologies research

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

SDG: Affordable and clean energy

Open Access status: gold

Estimated APC paid: $2,630