锌
电解质
材料科学
阳极
碘
无机化学
冶金
化学
电极
物理化学
作者
Qingqing Ren,Xinyue Tang,Gang Sun,Yaqing Guo,Yixing Li,Xu‐Lei Sui,Zhen‐Bo Wang
出处
期刊:ACS Nano
[American Chemical Society]
日期:2025-08-06
卷期号:19 (32): 29491-29502
被引量:3
标识
DOI:10.1021/acsnano.5c07752
摘要
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 ZnSO4 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-I2 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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