Publication: Synthesis of ZIF-8 powders and their electrochemical role as a protective layer minimizing dendrite formation and elevating anode stability in Zn-ion batteries
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Issued Date
2025-12-01
Resource Type
ISSN
03787753
Scopus ID
2-s2.0-105015866983
Journal Title
Journal of Power Sources
Volume
658
Rights Holder(s)
SCOPUS
Bibliographic Citation
Journal of Power Sources Vol.658 (2025)
Suggested Citation
Chananil P., Triosod S., Phumuen P., Chanlek N., Kumnorkaew P., Klangtakai P., Srepusharawoot P., Thongnum A., Chompoosor A., Pimanpang S., Ruttanapun C., Amornkitbamrung V. Synthesis of ZIF-8 powders and their electrochemical role as a protective layer minimizing dendrite formation and elevating anode stability in Zn-ion batteries. Journal of Power Sources Vol.658 (2025). doi:10.1016/j.jpowsour.2025.238313 Retrieved from: https://hdl.handle.net/20.500.14740/50515
Corresponding Author(s)
Other Contributor(s)
Abstract
A Zn-based metal-organic framework (Zn-MOF) was synthesized via a solvothermal process using Zn(NO<inf>3</inf>)<inf>2</inf>·6H<inf>2</inf>O and 2-methylimidazole (2-Hmim) in ethanol at 120 °C for 24 h, yielding a crystalline structure consistent with ZIF-8, exhibiting a high surface area (1820.73 m<sup>2</sup> g<sup>−1</sup>) and a large pore size (1.47 nm). The ZIF-8 powder was coated onto a Zn plate (ZIF-8@Zn) and evaluated as a Zn-ion battery anode, demonstrating significantly enhanced cycling stability, with a lifespan up to 200 h across all current densities, outperforming bare Zn (132, 49, 34, 36, and 20 h for 1–5 mA cm<sup>−2</sup>) in a 2 M ZnSO<inf>4</inf> electrolyte. Post-plating/stripping analysis revealed that ZIF-8@Zn maintained a smooth morphology, whereas bare Zn exhibited pronounced roughness and dendrite formation. Cross-sectional SEM images confirmed a swollen ZIF-8 layer with reduced Zn thickness at higher plating/stripping current densities, and XRD analysis detected Zn<inf>4</inf>SO<inf>4</inf>(OH)<inf>6</inf>·4H<inf>2</inf>O and Zn<inf>4</inf>SO<inf>4</inf>(OH)<inf>6</inf>·5H<inf>2</inf>O byproducts on both electrodes. The ZIF-8@Zn||V<inf>2</inf>O<inf>5</inf> full-cell exhibited superior capacity (314.03 vs. 251.75 mAh g<sup>−1</sup> at 100 mA g<sup>−1</sup>) and long-term stability, with a 22.71 % capacity increase after 1000 cycles, in contrast to an 11.52 % reduction in the Zn||V<inf>2</inf>O<inf>5</inf> cell, highlighting ZIF-8@Zn's potential for stable Zn-ion batteries.