Stress Release of Zincophilic N‐Doped Carbon@Sn Composite on High‐Curvature Surface of Zinc Foam for Dendrite‐Free 3D Zinc Anode

Small Methods, Год журнала: 2025, Номер unknown

Опубликована: Янв. 15, 2025

Abstract Commercial 3D zinc foam anodes with high deposition space and ion permeation have shown great potential in aqueous batteries. However, the local accumulated stress from its high‐curvature surface exacerbates Zn dendrite issue, leading to poor reversibility. Herein, we employed zincophilic N‐doped carbon @ Sn composites (N‐C@Sn) as nano‐fillings effectively release of curvature foams toward dendrite‐free anode battery (AZIB). These electronegative conductive N‐C@Sn supporters can provide a highly channel for initial nucleation reduce current density regulating deposition. Uniform further assists homogenous distribution on platting surface, which gives positive feedback loop improve As result, composite (ZCSn Foam) symmetric cell achieves long cycle lifespan 1100h at 0.5 mA cm −2 , much more than that Foam (∼80 h lifespan). The full ZCSn Foam||MnO 2 exhibits remarkable reversibility 67% retention after 1000 cycles 0.8 A g −1 76% 1600 Ag . This 3D‐constructing strategy may offer promising practical pathway metal application.

Язык: Английский

---

Titanium Nitride–Cellulose Nanofiber Composite Separator for Zn Anode Stability in Aqueous Batteries

ACS Applied Energy Materials, Год журнала: 2024, Номер 7(17), С. 7496 - 7504

Опубликована: Авг. 20, 2024

Aqueous zinc-ion batteries (ZIBs) face significant challenges of Zn dendrite formation, electrode passivation, and corrosion. Herein, we introduce a composite separator composed titanium nitride (TiN) cellulose nanofiber (CNF), termed TN5, designed to enhance the performance ZIBs. The TN5 separator, with thickness approximately 45 μm, combines low cost, high thermal stability, flexibility. Experimental theoretical analyses demonstrate that improves Zn2+ ion diffusion ensures uniform plating, effectively mitigating side reactions. Zn//Zn symmetric cells using achieve exceptional cycling life spans 2500 h at 0.5 mA cm–2 1000 5 cm–2, significantly outperforming CNF separators. Additionally, Zn//NVO full separators exhibit superior discharge capacity stability. enhanced is attributed improved wettability, reduced concentration polarization, promotion (002) plane deposition. This study provides comprehensive approach developing high-performance, cost-effective for ZIBs, offering insights into stabilization anodes advancement aqueous battery technology.

Язык: Английский

---

Electron-losing regulation strategy for stripping modulation towards highly reversible Zn Anode

Chemical Science, Год журнала: 2024, Номер unknown

Опубликована: Янв. 1, 2024

An electron-losing regulation strategy for stripping modulation by adding Oxolane (OL) additives is proposed. According to experimental results, new guidance designing electrolyte provided.

Язык: Английский

---

A ZnO-halloysite coated composite separator capable of stabilizing zinc electrode interface for high-performance aqueous zinc-ion battery

Materials Today Chemistry, Год журнала: 2025, Номер 45, С. 102651 - 102651

Опубликована: Март 15, 2025

Язык: Английский

---

Selective Acid Etching Construction of High (101) Texture Zinc Metal Anodes for High‐Performance Zinc Ion Batteries

Small, Год журнала: 2025, Номер unknown

Опубликована: Март 21, 2025

Aqueous zinc-ion batteries (AZIB) are significantly constrained by the poor stability of Zn anodes in aqueous electrolytes, which is caused uncontrollable deposition behavior and parasitic reactions. The construction specific crystalline surfaces represents an effective method for stabilizing anodes. Therefore, a stable Malic acid@Zn (MA@Zn) anode with highly (101) texture configuration developed through acid etching. mechanism MA selective etching investigated theoretical calculations, where atoms detach from (002) crystal surface due to strong interaction surface, leading preferential corrosion formation unique morphology. This conducive MA@Zn anode, as it enhances affinity Zn2+ optimizes electric field distribution on thereby facilitating more deposition. Consequently, symmetric battery subjected cycling period exceeding 2400 h at current density 5 mA cm-2. In comparison, cycle life Zn//V2O5 full improved >6000 cycles, pouch also shows better performance.

Язык: Английский

---

Acid‐Treatment‐Assisted Liquid Metal–Based Zinc Metal Anode for Stable Aqueous Zinc‐Ion Batteries

International Journal of Energy Research, Год журнала: 2025, Номер 2025(1)

Опубликована: Янв. 1, 2025

Aqueous Zn‐ion batteries (AZIBs) are considered to be a promising alternative Li‐ion (LIBs) owing the low cost, superior safety, and high theoretical capacity of Zn anode (820 mAh g −1 5855 cm −3 ). However, metal anodes encounter challenges, mainly including formation unfavorable byproducts growth dendrites. Furthermore, corrosion hydrogen evolution reaction (HER) issues related AZIBs. To overcome these issues, we engineered surface using acid treatment eutectic GaIn–liquid (EGaIn–LM) coating. Coating EGaIn–LM on results in an liquid–liquid interface between electrolyte electrode, increasing wettability accelerating charge transfer kinetics, with respect bare anode. coating improved resistance reduced HER overpotentials Ga In. Based advantages, EGaIn–LM@acidified (EGaIn–LM@AZn) showed stable symmetric cycling over 420 h exhibited stability against Finally, prepared V 2 O 5 cathode–based full cells different anodes. The //EGaIn–LM@AZn cell demonstrated excellent rate capability, long‐term charge/discharge (capacity retention 71.8% after 1500 cycles at current density A ), specific capacities under various densities kinetics protective nature EGaIn–LM. proposed simple method may offer strategy prepare

Язык: Английский

---

Designing vertical aligned Zn microchannels for enhanced performance of Zn metal anodes

FlatChem, Год журнала: 2025, Номер unknown, С. 100870 - 100870

Опубликована: Май 1, 2025

Язык: Английский

---

Sulfur-Driven Structural Reinforcement for Long-Life Zn-Ion Storage

Inorganic Chemistry, Год журнала: 2025, Номер unknown

Опубликована: Май 19, 2025

Developing high-performance cathode materials with enhanced stability and fast charge transport kinetics is crucial for advancing aqueous zinc-ion batteries (ZIBs). Herein, we introduce S-doped VO2 (S-VO2) as a material, leveraging sulfur incorporation to regulate the electronic structure, suppress vanadium dissolution, improve electrochemical performance. The introduction of not only induces oxygen vacancies, which enhance conductivity facilitate rapid electron transfer, but also strengthens V-O bond, effectively mitigating dissolution during cycling. As result, S-VO2 delivers high specific capacity 386.3 mA h g-1 at 0.1 A g-1, retains 79.6% its over 1600 cycles 2.0 exhibits outstanding long-term durability 80.3% retention after 6000 10.0 g-1. Ex situ XRD, in Raman, XPS analyses confirm highly reversible Zn2+ storage mechanism, while XANES EXAFS studies reveal that S doping stabilizes local coordination environment vanadium, reducing structural distortions enhancing cycling stability. This work highlights synergistic role defects optimizing materials, providing valuable insights design next-generation AZIBs superior performance reliability.

Язык: Английский

---

In situ construction of an organic/metal bridging interface toward zinc metal anode with ultra-long cycle life of 5000 h

Chemical Engineering Journal, Год журнала: 2025, Номер unknown, С. 164463 - 164463

Опубликована: Июнь 1, 2025

Язык: Английский

---

Long-life cycling aqueous zinc-ion batteries based on g-C3N4@Zn electrodes

Journal of Power Sources, Год журнала: 2024, Номер 624, С. 235596 - 235596

Опубликована: Окт. 13, 2024

Язык: Английский

---