Size Engineering of Ni Nanoparticles via Dual Templates to Enhance Zinc–Iodine Batteries

ACS Applied Nano Materials, Год журнала: 2025, Номер 8(4), С. 1991 - 1999

Опубликована: Янв. 16, 2025

Zinc–iodine (Zn–I2) batteries have received widespread attention due to their higher safety, rich resources, and eco-friendly features show a promising potential for large-scale energy storage. Nevertheless, challenges such as the shuttle effect of polyiodides sluggish redox kinetics iodine species during charge discharge processes hinder development. This work reports an effective strategy improve electrochemical performance Zn–I2 through size engineering nickel nanoparticles on biomass carbon. In situ UV in Raman spectroscopies reveal that dual-template enables catalyst provide more active sites adsorption catalysis species, thereby enhancing capacity accelerating I–/I2 conversion reaction. The is also significantly inhibited. Consequently, with size-reduced host cathode exhibit superior rate performance, low polarization, long cycle life.

Язык: Английский

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Plant derived multifunctional binders for shuttle-free zinc-iodine batteries

Nano Energy, Год журнала: 2025, Номер unknown, С. 110876 - 110876

Опубликована: Март 1, 2025

Язык: Английский

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Customized Design of R‐SO₃H‐Containing Binders for Durable Iodine‐Loading Cathode of Zinc–Iodine Batteries

Advanced Energy Materials, Год журнала: 2025, Номер unknown

Опубликована: Март 24, 2025

Abstract The challenges of iodine dissolution and polyiodide shuttle behavior severely hinder the development zinc–iodine batteries (ZIBs). Among battery components, binders play a vital role in maintaining mechanical integrity facilitating conversion reaction iodine‐loading cathode ZIBs. Herein, series polyimide‐based polymers rich sulfonic acid group (R‐SO 3 H) are elaborately designed as functional for cathodes. According to spectroscopic characterization theoretical calculation results, PI‐4S binder with R‐SO H, hydroxyl imide groups holds stronger chemisorption capability I 2 /I − species, which effectively helps block active iodine's behavior. As result, corresponding ZIBs deliver reversible capacity 142.7 mAh g −1 over 600 cycles at 0.2 A , high 157.6 500 0.5 50 °C, durable cycling stability 88 15000 4 . This work guides autonomous design multifunctional polymer cathodes facilitates practical application

Язык: Английский

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Zeolite‐Based Solid‐State Electrolyte for Highly Stable Zinc Metal Batteries

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Март 25, 2025

Abstract Solid‐state electrolytes are demonstrated great inhibition effect on cathodic dissolution and anodic side reactions in zinc‐ion batteries. In this work, a novel zeolite‐based solid electrolyte (Zeolite‐Zn) enriched with zinc ions, high ionic conductivity (2.54 mS cm −1 ) Zn 2+ transference number (0.866) is prepared through ion‐exchange strategy. Owing to the anhydrous characteristic, Zeolite‐Zn effectively extends electrochemical window 2.5 V inhibits hydrogen evolution reaction. As for Zn||Zeolite‐Zn||NH 4 O 10 batteries, high‐capacity retention rate of 84.9% can be achieved after 1010 cycles at 0.5 A g . Even temperature 60 °C, NH cathode able maintain reversible capacity 239.2 mAh 110 cycles, which attributed superior structural stability, weak interfacial reaction, low migration barrier, inhibited vanadium electrolyte. addition, as‐fabricated Zn||Zeolite‐Zn||AC@I 2 batteries have also brilliant performances, suggesting its promising potential practical application zinc‐based secondary This study provides mechanistic insights inspiration original design inorganic electrolytes.

Язык: Английский

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Self‐Assembled Janus Layers on Zinc Interface to Repel Water Molecules and Polyiodides toward Long‐Life Aqueous Zinc Iodine Batteries

ChemistryEurope, Год журнала: 2025, Номер unknown

Опубликована: Март 26, 2025

Aqueous zinc iodine (Zn//I 2 ) batteries have garnered widespread attention due to their high theoretical specific capacity and safety. However, the corrosion of Zn metal anodes, induced by H O molecules polyiodides, leads a short cycling life. Herein, 4‐tert‐Butylcalix[6]arene (TBCX)‐based Janus molecular layers, self‐assembled on interface, are utilized inhibit hydrogen evolution reaction (HER) confine thereby stabilizing anode achieving long‐life Zn//I battery. The hydrophobic tertiary butyl (C(CH 3 functional groups in TBCX layers repel molecules, depressing HER. Significantly, rate at Zn@TBCX is reduced 0.7 μmol h −1 cm −2 . Additionally, hydroxyl (OH) TBCX, with lone pair electrons, demonstrate polar affinity for preventing them from reaching interface thus suppressing polyiodides. Furthermore, zincophilic layer also acts as an ionic redistributor, enabling rapid homogeneous 2+ flux. Owing these attributes, symmetric cell can cycle stably 2200 5 mA , Zn@TBCX//I full cells deliver extended lifespan 6000 cycles A g retention ratio 98.8%.

Язык: Английский

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Viologen-based polymers with extended π-conjugation structure to boost zinc-iodine battery performance by constructing efficient electric double layers

Chemical Engineering Journal, Год журнала: 2025, Номер unknown, С. 162992 - 162992

Опубликована: Апрель 1, 2025

Язык: Английский

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Reducing Self-Discharge of Iodide-Based Redox Supercapacitors through Highly Concentrated Salt Solution

Journal of Alloys and Compounds, Год журнала: 2025, Номер unknown, С. 180909 - 180909

Опубликована: Май 1, 2025

Язык: Английский

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