Electrochemical constructing versatile ZnAl-LDH artificial interface layer coated (002)-textured Zn for highly reversible zinc anodes

Chemical Engineering Journal, Год журнала: 2024, Номер unknown, С. 155813 - 155813

Опубликована: Сен. 1, 2024

Язык: Английский

---

Ion‐Transport Kinetics and Interface Stability Augmentation of Zinc Anodes Based on Fluorinated Covalent Organic Framework Thin Films

Advanced Energy Materials, Год журнала: 2024, Номер unknown

Опубликована: Окт. 13, 2024

Abstract Zinc (Zn) emerges as an ideal anode for aqueous‐based energy storage devices because of its safety, non‐toxicity, and cost‐effectiveness. However, the reversibility zinc anodes is constrained by unchecked dendrite proliferation parasitic side reactions. To minimize these adverse effects, a highly oriented, crystalline 2D porous fluorinated covalent organic framework (denoted TpBD‐2F) thin film in situ synthesized on Zn protective layer. The zincophilic hydrophobic TpBD‐2F provides numerous 1D nanochannels, which facilitate hopping/transfer 2+ repel H 2 O infiltration, thus regulating flux inhibiting interfacial corrosion. resulting enabled stable plating/stripping symmetric cells over 1200 h at mA cm −2 . Furthermore, assembled full (Zn‐ion capacitors) deliver ultra‐long cycling life 100 000 cycles current density 5 A g −1 , outperforming nearly all reported materials.

Язык: Английский

---

Dendrite‐Free Zn Anode Enabled by Dual‐Function Itaconic Acid Electrolyte Additive Via Controllable Acidic Environment and In Situ Interfacial Protective Layer for Durable Aqueous Zinc Ion Batteries

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Фев. 5, 2025

Abstract The side reactions and dendritic growth largely impede the utilization of Zn anode in aqueous zinc ion batteries (AZIBs). Herein, a novel strong acidic electrolyte additive itaconic acid (IA) is introduced to achieve highly stable via dual functions. First, use trace amounts IA can provide steady low pH environment for electrolyte, which beneficial eliminate alkaline by‐products by neutralizing OH − that accumulated near anode. Second, an interfacial protective layer be situ formed cross‐linking reduction reaction between anode, helping inhibit continuous corrosion on promote formation uniform deposition. Consequently, achieves ultra‐long cycle‐life (5390 h at 1 mA cm −2 , mAh ) enhanced coulombic efficiency (99.86% upon 2100 cycles 5 −1 ). Besides, full cell assembled with sodium vanadate delivers high reversible capacity 179.6 g over 2000 2 A . This work offers new solution related insights design electrolytes additives toward AZIBs.

Язык: Английский

---

Enhancing the Low‐Temperature Performance of Sodium‐Ion Battery by Introducing Nanodiamonds in Anode Prepared from Cattail Grass

Small, Год журнала: 2025, Номер unknown

Опубликована: Март 5, 2025

Sodium-ion batteries (SIBs) have received much attention as ideal candidates for next-generation large-scale energy storage systems, but their performance significantly deteriorates at low temperatures, limiting application in cold or high-altitude environments. This work presents an easier approach to improving low-temperature by incorporating nanodiamonds (NDs) into hard carbon anodes derived from cattail grass. The modified anode shows a larger specific surface area, offering more active sites Na+. After 90 cycles 0.1 A g-1, the reversible capacity of reaches 365.1 mA h g-1 room temperature and remains 245.1 -40 °C. Even under high current density 1.0 it delivered 108.2 after 500 with retention rate 90%. improved is attributed introduced NDs SIBs, which crease number sites, reduce charge transfer resistance, lower activation energy, effectively inhibit formation Na dendrites. potential pathway designing efficient stable materials SIBs temperatures.

Язык: Английский

---

Transition in morphology and properties in bottom-up HPHT nanodiamonds synthesized from chloroadamantane

Nanoscale Advances, Год журнала: 2025, Номер unknown

Опубликована: Янв. 1, 2025

Nanodiamonds synthesized by the bottom-up method under high pressure and temperature (BU_HPHT) show a transition in properties morphology at approximately 2 nm.

Язык: Английский

---

Pre‐Established Ion Transport Pathways Through Electrolyte Initiator for High‐Efficiency Polymer Interface Enabling Ultra‐Stable Aqueous Zinc‐Metal Anodes

Advanced Materials, Год журнала: 2025, Номер unknown

Опубликована: Март 30, 2025

Abstract Achieving stable zinc‐metal anodes is pivotal to realizing high‐performance aqueous batteries (AZMBs). The construction of a functional polymer interface layer on the anode surface confirmed as an effective strategy for mitigating dendrite growth and side reactions, thereby significantly enhancing stability anode. However, polymers capable withstanding electrolyte environments over long term typically suffer from elevated interfacial impedance, which hinders Zn 2+ transport. Here, pioneering enabled by with high‐efficiency ion transport introduced. This polymerized in situ through innovative redox initiation system, where zinc trifluoromethanesulfonate (Zn(OTf) 2 ) salts function both reductant pre‐pathways, ensuring resultant achieves ideal balance ionic conductivity, water resistance, adhesion, mechanical properties, effectively suppressing reactions. Symmetric cells assembled this deliver impressive lifespan 8800 1600 h under 1 5 mA cm −2 , respectively. further demonstrates exceptional feasibility versatility Zn‐NVO Zn‐PANI batteries. work provides groundbreaking insights into strategic design layers AZMBs.

Язык: Английский

---

Unidirectional Ion Sieve Enabling High-Flux and Reversible Zinc Anodes

ACS Nano, Год журнала: 2025, Номер unknown

Опубликована: Апрель 8, 2025

The longevity of aqueous batteries after scaling up is largely restricted by metal anodes (Zn, Al, and Mg). Parasitic reactions uncontrolled dendrites dominate failure modes, especially at high current densities. To fully improve its reversibility, tailored surface chemistry well-designed ion transport channels are simultaneously demanded. Here, inspired the reticulated structure sea urchin shell, an aligned porous coating assembled from graphene oxide sodium alginate anchored on zinc anodes, termed a unidirectional sieve. As revealed multiscale modeling tests, this biomimetic layer produces area, creating low-tortuosity that greatly enhance kinetics uniform distribution ions. introduction ion-conductive natural polymer enables well-tuned hydration selectivity, alleviating side reactions. With structural-functional integrity design, decorated symmetrical cell presents reversible cycling for 1600 h, with reduced nucleation potential 21 mV Coulombic efficiency. Aided Distribution Relaxation Time tool, different electrochemical processes deconvoluted to understand respective mechanisms, thereby providing referable strategy product scaling. In end, 7Ah Zn||VO2 pouch demonstrates stable over 500 cycles 1 A·g-1, capacity retention 90%.

Язык: Английский

---

Quaternary Alloy Interfaces for Stable Zinc Anodes for High‐Performance Aqueous Zinc‐Ion Batteries With Long‐Term Cycling Stability

Small, Год журнала: 2025, Номер unknown

Опубликована: Май 2, 2025

Abstract Aqueous zinc‐ion batteries (AZIBs) have emerged as a promising energy storage solution owing to their intrinsic safety, low cost, environmental friendliness, and high theoretical specific capacity. However, practical application is hindered by uncontrollable dendrite growth side reactions at the zinc metal anode. To address these challenges, simple cost‐effective electrodeposition strategy proposed construct quaternary Zn‐Cu‐Sn‐Bi alloy artificial interface layer on foil (ZCSB@Zn) anode of AZIBs. Density functional theory (DFT) calculations in situ optical observation confirm that this dense reduces migration barrier weakens hydrogen adsorption, facilitating uniform deposition while effectively suppressing formation. The symmetric ZCSB@Zn cell exhibits extraordinary cycle stability exceeding 8000 h. Furthermore, assembled ZCSB@Zn//CSB‐MnO 2 full demonstrates capacity 199 mAh g −1 1 A , maintaining even under loading 10 mg cm −2 temperature conditions (50 °C). This study presents scalable for constructing layers anodes, highlighting potential AZIB applications.

Язык: Английский

---

Electric Field Regulator Constructed by Magnetron Sputtering for Dendrite‐Free and Stable Zinc Metal Anode

Advanced Functional Materials, Год журнала: 2024, Номер unknown

Опубликована: Сен. 23, 2024

Abstract Rechargeable aqueous zinc‐ion batteries (AZIBs) are considered to be one of the most promising devices in next generation energy storage systems. However, uncontrolled growth Zn dendrites during electroplating leads rapid battery failure, which hinders wide application AZIBs. In this work, an Fe metal interface (FMI) with electric field regulation is designed on anode using a magnetron sputtering technology. The FMI layer nanosheet array not only uniforms surface field, but also adjusts 2+ ion distribution inhibit 2D diffusion. strong orientation relationships enhance reversibility plating/stripping, improving structural stability layer. Consequently, FMI@Zn symmetric cell exhibits ultra‐stable lifespan for over 6000 h (Cumulative plated capacity, CPC = 15 Ah cm −2 ) low voltage hysteresis 46.4 mV and high Coulombic efficiency 99.8% at 5 mA . Even large current density 40 , reaches 19.7 proposed strategy reveals prospect designing highly stable anode, applies other anodes

Язык: Английский

---

Multi-functional protective material with atomically dispersed zincophilic site enabling long-life zinc anode

Chemical Science, Год журнала: 2024, Номер unknown

Опубликована: Янв. 1, 2024

Parasitic side reactions and the formation of zinc dendrites in aqueous solutions severely hinder practical application Zn metal anodes. Carbon materials with high electrical conductivity mechanical robustness are promising protective for However, zincophobic nature carbon impedes cycling stability zinc-ion batteries. Herein, a versatile design strategy is proposed utilizing doped single atoms atomically dispersed zincophilic sites as multi-functional material high-performance Taking bismuth-single-atom-doped (Bi SAs) an example, density functional calculations verify that introduction bismuth can enhance zincophilicity, promote robust adhesion to foil, effectively suppress hydrogen evolution. Guided by theoretical calculations, Bi single-atom-doped nanobelts synthesized employed stabilize As expected, due atomic-level sites, hydrophobicity, enhanced ionic conductivity, SAs@Zn anode demonstrates over 4200 h 600 reversible at 5 mA cm

Язык: Английский

---