journal article·2025-08-19

Synergetic Structural Optimizations of Zinc Anodes and Electrolytes to Enable Zinc–Iodine Batteries with Excellent Low-Temperature Performances

Qingqing Ren, Xinyue Tang, Gang Sun, Yaqing Guo, Yixing Li, Xulei Sui, Zhenbo Wang

ACS Nano· Volume 19· Issue 32
Publisher page

Abstract

Challenges like zinc dendrite growth, hydrogen evolution, and electrolyte freezing hinder the development of aqueous Zn-based batteries. To address these issues, we implemented synergetic structural optimizations. A stress-mediated (002)-textured Zn anode was fabricated and characterized via cross-sectional electron channeling contrast. Additionally, ethylene glycol was used to further promote planar Zn electrodeposition via regulation of its kinetics, with Zn crystal nucleation observed. Interestingly, low concentrations of I – ions were incorporated into the ZnSO 4 electrolyte and formed a hydrophobic inner Helmholtz plane on the Zn anode, effectively suppressing hydrogen evolution. As a result, the modified Zn symmetric battery achieved an impressive 7710 h of stable cycling at 5 mA cm –2 /1 mAh cm –2 and 1800 h at 12 mA cm –2 /6 mAh cm –2 . Furthermore, the modified Zn–I 2 battery demonstrated an outstanding low-temperature performance, delivering a discharge capacity of 89 mAh g –1 at 0.2 A g –1 after 2300 cycles at −30 °C.
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Research context

OpenAlex topics: Advanced battery technologies research · Electrocatalysts for Energy Conversion · Perovskite Materials and Applications

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Shenzhen Key Laboratory of Special Functional Materials, Shenzhen Engineering Laboratory for Advance Technology of Ceramics, Guangdong Research Center for Interfacial Engineering of Functional Materials, Guangdong Provincial Key Laboratory of New Energy Materials Service Safety, College of Materials Science and Engineering

Shenzhen University

College of Physics and Optoelectronic Engineering

College of Materials Science and Engineering

State Key Laboratory of Space Power-Sources, MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering

Harbin Institute of Technology

Funding

Science and Technology Foundation of Shenzhen City · China Postdoctoral Science Foundation · National Natural Science Foundation of China · High-Level Professional Team in Shenzhen

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