Zinc Single‐Atom Catalysts Encapsulated in Hierarchical Porous Bio‐Carbon Synergistically Enhances Fast Iodine Conversion and Efficient Polyiodide Confinement for Zn‐I₂ Batteries

Advanced Materials, Год журнала: 2025, Номер unknown

Опубликована: Янв. 31, 2025

Aqueous zinc iodine (Zn-I2) batteries have attracted attention due to their low cost, environmental compatibility, and high specific capacity. However, development is hindered by the severe shuttle effect of polyiodides slow redox conversion kinetics (I2) cathode. Herein, a long-life Zn-I2 battery developed anchoring within an edible fungus slag-derived carbon matrix encapsulated with Zn single-atom catalysts (SAZn@CFS). The N content microporous structure SAZn@CFS provide strong confinement, while Zn-N4-C sites chemical interact effectively mitigating dissolution polyiodide effect. Additionally, uniformly distributed SAZn significantly enhance efficiency I-/I3 -/I5 -/I2, leading improved At current density 10 A g-1, designed delivers excellent capacity 147.2 mAh g-1 long lifespan over 80 000 cycles 93.6% retention. Furthermore, exhibits stable operation for 3500 times even at 50 °C, demonstrating significant advances in reversible storage. This synergistic strategy optimizes composite structure, offering practical approach meet requirements high-performance batteries.

Язык: Английский

---

Future Long Cycling Life Cathodes for Aqueous Zinc‐Ion Batteries in Grid‐Scale Energy Storage

Advanced Energy Materials, Год журнала: 2025, Номер unknown

Опубликована: Фев. 21, 2025

Abstract Developing sustainable energy storage systems is crucial for integrating renewable sources into the power grid. Aqueous zinc‐ion batteries (ZIBs) are becoming increasingly popular due to their safety, eco‐friendliness, and cost‐effectiveness. However, challenges remain in achieving realistic time per charge, long cycling life, high capacity practical conditions. Despite advancements cathode materials, issues such as dissolution side reactions limit performance. Optimizing architecture electrolyte composition essential address these challenges. Tailored formulations can stabilize electrode‐electrolyte interface (EEI enhance stability. This perspective reviews cathodes from past decades compares performance under different current densities. Emphasizing low density extended stability widespread adoption of ZIBs grid‐scale applications. By focusing on aspects, this aims bridge gap between research applications, offering insights optimizing material structure selecting matching electrolytes storage. work guides future developments ZIB technology, facilitating transition lab real‐world deployment.

Язык: Английский

---

A novel water-reducer-based hydrogel electrolyte for robust and flexible Zn-I2 battery

Energy storage materials, Год журнала: 2024, Номер unknown, С. 103981 - 103981

Опубликована: Дек. 1, 2024

Язык: Английский

---

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

---

High yield porous carbon framework with co-active B N sites to promote polyiodide conversion for high performance Zn-I2 batteries

Journal of Colloid and Interface Science, Год журнала: 2025, Номер unknown, С. 138070 - 138070

Опубликована: Июнь 1, 2025

Язык: Английский

---

Trace cesium iodide for uniform zinc deposition and enhanced cathode kinetics in aqueous Zn-I2 batteries

Journal of Alloys and Compounds, Год журнала: 2024, Номер unknown, С. 178424 - 178424

Опубликована: Дек. 1, 2024

Язык: Английский

---