Journal of Materials Chemistry C, Год журнала: 2024, Номер 13(5), С. 2388 - 2398
Опубликована: Дек. 9, 2024
A robust and efficient ion transport PTFE-based separator with superior stability was fabricated for zinc hybrid supercapacitors, demonstrating excellent electrochemical performance.
Язык: Английский
Advanced Energy Materials, Год журнала: 2024, Номер unknown
Опубликована: Дек. 6, 2024
Abstract The high activity of water in aqueous electrolyte causes drastic side reactions on the Zn anodes, severely limiting electrochemical performance zinc metal batteries (AZMBs) under extreme conditions. Herein, levulinic acid is developed as hydrated deep eutectic solvent (DES), to build a novel non‐flammable and cost‐effective ZnSO 4 ‐based with triple regulation molecules behavior, enabling highly stable AZMBs over wide temperature. In situ experiments, molecular dynamics simulations, spectroscopy analysis jointly reveal that DES capable comprehensively lowering by simultaneously controlling behavior free, solvated, interfacial within system. Consequently, anodes exhibit ultralong cycling stability (4500 h at 1 mA cm −2 /1 ), decent Coulombic efficiency 99.39%, excellent temperature tolerance (−20–50 °C). Notably, designed 2.0 Ah Zn//VOX pouch cell exhibits recorded actual energy density 37.46 Wh Kg −1 95.38 L whole level, remarkable capacity retention 81.01% after 150 cycles, demonstrating potential for scale‐up into real AZMBs. This work provides an in‐depth understanding correlation between molecule properties
Язык: Английский
Процитировано
13
Progress in Materials Science, Год журнала: 2025, Номер unknown, С. 101453 - 101453
Опубликована: Фев. 1, 2025
Язык: Английский
Процитировано
2
Advanced Energy Materials, Год журнала: 2025, Номер unknown
Опубликована: Март 3, 2025
Abstract An all‐aqueous membrane‐free Zn–Mn redox flow battery utilizing deposition chemistry can be an excellent alternative to conventional aqueous batteries for reducing costs and improving stability. In the neutral/mildly acidic electrolyte environment of batteries, anode still suffers from issues such as zinc dendrite growth corrosion, while cathode struggles with poor reversibility. The same arise in that use a combined electrolyte, where both anolyte catholyte are combined. Therefore, it is possible simultaneously address by using single additive electrolyte. Here, aspartic acid introduced universal battery. bonded Zn surface, 2+ ions, Mn resolving almost all side reactions. Impressively, demonstrated remarkable cycling stability 300 cycles at areal capacity 10 mAh cm −2 . A new efficient strategy proposed controlling overall reactions simple addition integrated this report.
Язык: Английский
Процитировано
1
Small, Год журнала: 2025, Номер unknown
Опубликована: Фев. 28, 2025
Aqueous rechargeable zinc batteries, despite advantages like safety and performance, struggle with water-based side reactions such as hydrogen evolution corrosion. Regulating the solvation structure of Zn2+ is essential for stability. Introducing n-hexane, a nonpolar alkane, modifies coordination stabilizes Zn anode-electrolyte interface. The miscibility n-hexane improved through formation an oil-in-water macroemulsion amphiphilic Zn(OTf)2 β-cyclodextrin. Macroemulsion stability highly sensitive to component concentrations, requiring precise balance ensure proper electrolyte function. However, designing multi-component electrolytes remains empirical. To address this, Bayesian optimization framework presented, incorporating physical relationships into machine learning efficiently explore design space. This approach rapidly identifies critical concentration stability, which key maintaining phase in electrolyte. optimized maintains low overpotential (30 mV) over 1300 h Zn||Zn symmetric cell, current density 1 mA cm-2.
Язык: Английский
Процитировано
1
ACS Applied Materials & Interfaces, Год журнала: 2025, Номер unknown
Опубликована: Фев. 10, 2025
Rampant dendrite growth and severe parasitic reactions at the electrode/electrolyte interface significantly limit cycle life of aqueous zinc ion hybrid supercapacitors (ZHSCs). In this study, sodium lignosulfonate (SLS) as one green polymer was introduced into ZnSO4 electrolyte to construct a multifunctional layer on surface Zn plates. Experimental analyses theoretical calculations show that presence SLS layer, rich in oxygen-containing functional groups (-SO3-), can not only modulate structure electric double (EDL) suppress interfacial side caused by free H2O SO42-, but also promote (101)-oriented deposition selectively controlling behavior Zn2+ through specific adsorption different crystalline surfaces. The optimized allows stable Zn//Zn symmetric cells achieve cumulative plating capacity exceeding 4 Ah cm-2 high areal 5 mAh cm-2, cycling for more than 1000 cycles with an excellent average Coulombic efficiency 99.34% Zn//Cu asymmetric cells. Zn//AC ZHSC exhibits ultralong stability over 40,000 electrolyte, decay rate low 0.000285% per cycle.
Язык: Английский
Процитировано
0
Advanced Functional Materials, Год журнала: 2025, Номер unknown
Опубликована: Фев. 17, 2025
Abstract Aqueous zinc‐ion batteries (AZIBs), candidates for large‐scale energy storage, face limitations due to the poor reversibility of zinc anodes. It reports on pyridine derivatives with high donor characteristics, including 2‐chloro‐1‐methylpyridinium iodide (CMPI) and pyridine‐2‐acetaldoxime methyl (PAMI), as effective additives. At lower concentrations, these additives markedly curtail dendrites formation evolution hydrogen anode, thereby prolonging AZIBs life. Through a combination theory experiments, impact side‐chain groups kinetic process depositioni is elucidated. In contrast PAM + , CMPI demonstrates enhanced adsorption self‐assembles at anode‐electrolyte interface, forming barrier free water protective ZnI layer via I − ion integration. This dual‐layer strategy boosts plating/stripping by 100‐fold achieves coulombic efficiency 99.7% in zinc–copper half‐ batteries. The findings advance understanding electrolyte additive structures deposition, providing molecular framework screening aqueous metal‐ion
Язык: Английский
Процитировано
0
Small, Год журнала: 2025, Номер unknown
Опубликована: Март 3, 2025
Abstract Electrolyte additives are commonly employed in aqueous zinc‐ion batteries (ZIBs) to suppress dendrite growth, corrosion, and hydrogen evolution. However, rational design principles systematic mechanistic studies for selecting suitable regulate reversible Zn plating/stripping chemistry worth in‐depth study. Using L‐ascorbic acid sodium (LAAS) as the representative, theoretical calculations combined with situ experimental analyses manifest that polyhydroxy‐sodium‐salts preferentially chemisorbed on surface construct H 2 O‐poor interfacial microenvironment, suppressing undesirable water‐related side reactions. Concurrently, ions provide an armor shielding layer electric field guide (002) deposition texture. Specifically, sodium‐salts replace O molecules coordinated shell of hydrated 2+ ions, improving electrochemical stability window (ESW) extend working voltage ZIBs. Therefore, Zn||Zn symmetric cell additive exhibits impressive cumulative capacity 7875 mAh cm −2 at high current density 30 mA . Even when discharge expands 1.8 V, Zn||V 5 full realizes a retention 98.26% over 500 cycles. This work quickens advanced ZIBs by green cheap electrolyte additive, which is expected herald innovative phase research high‐stability batteries.
Язык: Английский
Процитировано
0
Advanced Energy Materials, Год журнала: 2025, Номер unknown
Опубликована: Март 10, 2025
Abstract The electrode/electrolyte interfacial side reaction is a critical issue for aqueous zinc ion batteries (ZIBs). In this study, it presents an innovative electrolyte designed to utilize steric hindrance effects modulate Zn deposition behavior while mitigating undesirable hydrogen evolution reactions. incorporation of sugar alcohols into the facilitates reconfiguration bonding network, alters solvation structure 2 ⁺ ions, and promotes rapid desolvation process, resulting in enhanced transport kinetics. Additionally, xylitol molecules preferentially adsorb onto (100) crystalline surface, inducing structural changes promote (101) growth. Consequently, configuration enables anode achieve impressive operational lifespan 2100 h exceptional Coulombic efficiency 99.8%. Furthermore, when paired with ZnHCF as anode, full cell operates at high voltage 1.75 V, illustrating promising pathway practical application ZIBs.
Язык: Английский
Процитировано
0
Advanced Functional Materials, Год журнала: 2025, Номер unknown
Опубликована: Апрель 30, 2025
Abstract Vanadium oxides hold great promise for aqueous zinc‐ion batteries (AZIBs) due to their multiple oxidation states, diverse crystalline structures, and high vanadium abundance. However, applications are limited by narrow interlayer spacing, poor reversibility, solubility. To address these issues, an inorganic–organic co‐intercalated [Al 0.16 (C 5 H 14 ON) 0.12 ]V 2 O ·0.39H cathode (IO‐V ) is reported with enlarged spacing (13.7 Å) enhanced structure stability better AZIBs. Serving as structural pillars, Al 3+ , betaine create a fast 2D channel Zn 2+ transport. The positively charged quaternary ammonium groups in strongly interact the lattice oxygen of V further stabilizing layered structure. polar carboxylic acid weaken interaction between V─O bonds thus improve diffusion kinetics lowered energy barriers. Consequently, IO‐V delivers specific capacity (549.5 mAh g −1 at 0.2 A ), ion rate (10 −8 ∼10 −7 cm s superior cycle life (80.1% retention after 20,000 cycles 30 ultrahigh density (416.3 Wh kg becoming state‐of‐the‐art systems comprehensive metrics. This study provides promising direction design vanadium‐based materials advanced
Язык: Английский
Процитировано
0
Electrochimica Acta, Год журнала: 2025, Номер unknown, С. 146418 - 146418
Опубликована: Май 1, 2025
Язык: Английский
Процитировано
0