Texture Exposure of Unconventional (101)_Zn Facet: Enabling Dendrite‐Free Zn Deposition on Metallic Zinc Anodes

Advanced Energy Materials, Journal Year: 2024, Volume and Issue: 14(16)

Published: Feb. 15, 2024

Abstract Texturing metallic zinc anodes (MZAs) for selective exposure of (002) Zn plane with high thermodynamical stability is an efficient scheme dendrite‐free electrodeposition. However, fundamental factors that influence deposition morphology via surface crystallographic texture engineering are not well understood. Herein, different from traditional cognition, MZAs preferential (101) facet demonstrated to be equally effective in promoting deposition, which enabled by introducing trace amount (0.01 m ) theophylline into ZnSO 4 electrolyte. Experimental results and mathematical model corroborate, indicating mechanistically the derived cations preferentially adsorb on crystal due higher adsorption energy, thereby accelerating its growth through increased binding affinity 2+ ions. Consequently, this phenomenon facilitates achieve ordered orientation (101‐Zn), thus enabling electrodeposition/dissolution cycling over 650 h under a depth discharge up 40% significantly boosting rechargeability (76.7% capacity retention after 1000 cycles) 101‐Zn||carbon‐cloth@MnO 2 full battery relative counterpart without additive (36.3%). The work offers deep insights scientific links between morphology, while opens vast untapped opportunities realize MZAs.

Language: Английский

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Mitigating cathodic dissolution through interfacial water masking to enhance the longevity of aqueous zinc–ion batteries

Energy & Environmental Science, Journal Year: 2024, Volume and Issue: 17(5), P. 2059 - 2068

Published: Jan. 1, 2024

Schematic illustration of interfacial water-masking agent (IWMA) strategy. Design an IWMA to suppress the dissolution V-based cathodes by specifically adsorbing on interface, reconstructing hydrogen-bond networks, and regulating solvation structures.

Language: Английский

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Hydrophobic Ion Barrier‐Enabled Ultradurable Zn (002) Plane Orientation towards Long‐Life Anode‐Less Zn Batteries

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: unknown

Published: July 8, 2024

Gradual disability of Zn anode and high negative/positive electrode (N/P) ratio usually depreciate calendar life energy density aqueous batteries (AZBs). Herein, within original

Language: Английский

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A Five Micron Thick Aramid Nanofiber Separator Enables Highly Reversible Zn Anode for Energy‐Dense Aqueous Zinc‐Ion Batteries

Advanced Energy Materials, Journal Year: 2024, Volume and Issue: 14(39)

Published: July 15, 2024

Abstract The rampant dendrites growth caused by uncontrolled deposition of Zn 2+ ions at metal anode poses a significant obstacle to the practical applications aqueous zinc‐ion batteries (ZIBs). Herein, an ultrathin (5 µm) aramid nanofiber (ANF) separator is reported enhance stability and ZIB energy density. Through systematic experimental studies DFT simulations, it demonstrated that ANF with unique surface polarity can modify solvation configuration, facilitate desolvation, regulate orientation ions. Consequently, demonstrates 85‐fold increase in running time beyond 850 h compared conventional glass fiber 5 mA cm −2 /2.5 mAh . Even under harsh depth discharge conditions 50% 80%, anodes still sustain extended cycling periods over 475 200 h, respectively. As pairing this thin high‐areal‐capacity Mn 2.5 V 10 O 24 ∙5.9H 2 cathode low negative capacity/positive capacity ratio (2.64) full cell, superior gravimetric/volumetric density (129.2 Wh kg −1 /142.5 L ) achieved, far surpassing majority counterparts literature. This work offers promising for promoting utilization energy‐dense ZIBs.

Language: Английский

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Polycation-regulated hydrogel electrolytes with nanoscale hydrophobic confinement inducing Zn(002) deposition for highly reversible zinc anodes

Energy & Environmental Science, Journal Year: 2024, Volume and Issue: 17(18), P. 6640 - 6655

Published: Jan. 1, 2024

A polycation-regulated hydrogel electrolyte with nanoscale hydrophobic confinement addresses dendrites, corrosion, and lifespan issues in AZIBs by regulating the electric field, enhancing Zn 2+ migration, guiding Zn(002) plane growth.

Language: Английский

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Regulating Water Activity for All‐Climate Aqueous Zinc‐Ion Batteries

Advanced Energy Materials, Journal Year: 2024, Volume and Issue: unknown

Published: June 12, 2024

Abstract Suppressing the water activity is challenging to achieve high‐performing aqueous zinc ion batteries (AZIBs), especially for its practical climate adaptability. Reconstructing H‐bond network and repealing solvation can effectively reinforce covalency inside molecular. Here, a hydrogel electrolyte formula utilizing ClO 4 − anions hydrophilic ─NH 2 on polyacrylamide chains shown bond with molecules, while zincophilic glucose preferentially regulate Zn 2+ solvation. The multifunctional structure disrupt intrinsic inhibit interface side‐reactions induced by active water. Finally, delayed freezing point expanded voltage stability window are realized, which promotes ZIBs steady operate in wide temperature range. When operating at 70 −30 ˚C, Zn//NVO battery achieves high specific capacity of 488 254 mAh g −1 , respectively, surpassing most previously reported results. Remarkably, pouch delivers state‐of‐the‐art 438.1 realizes retention 76.3% after 400 cycles 200 mA .

Language: Английский

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Interfacial Domino Effect Triggered by β‐alanine Cations Realized Highly Reversible Zinc‐Metal Anodes

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: unknown

Published: May 31, 2024

Realizing durative dense, dendrite-free, and no by-product deposition configuration on Zn anodes is crucial to solving the short circuit premature failure of batteries, which simultaneously determined by interface chemistry, electro-reduction kinetics, mass transfer process, their interaction. Herein, this work unmasks a domino effect β-alanine cations (Ala

Language: Английский

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Machine Learning-Assisted High-Donor-Number Electrolyte Additive Screening toward Construction of Dendrite-Free Aqueous Zinc-Ion Batteries

ACS Nano, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 7, 2025

The utilization of electrolyte additives has been regarded as an efficient strategy to construct dendrite-free aqueous zinc-ion batteries (AZIBs). However, the blurry screening criteria and time-consuming experimental tests inevitably restrict application prospect additive strategy. With rise artificial intelligence technology, machine learning (ML) provides avenue promote upgrading energy storage devices. Herein, we proposed intriguing ML-assisted method accelerate development efficiency on AZIBs. Concretely, selected Gutmann donor number (DN value) a screen parameter, which can reflect interaction between solvent molecules ions, integrated ML model that predict DN values organic via molecular fingerprints, thereby achieving additives. Then, combined with theoretical calculations, influence law three different thermodynamic stability Zn anode its corresponding optimization mechanisms were revealed; are in positive correlation electrochemical performance anode. Especially, isopropyl alcohol (IPA) high value (36) various Zn-based cells presented superior performance, including calendar life (1500 h), stable Coulombic (99% within 450 cycles), favorable cycling retention. This work pioneers techniques for predicting additives, offering compelling investigation

Language: Английский

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Optimizing Zn (100) Deposition via Crystal Plane Shielding Effect towards Ultra-High Rate and Stable Zinc Anode

Energy storage materials, Journal Year: 2025, Volume and Issue: unknown, P. 104026 - 104026

Published: Jan. 1, 2025

Language: Английский

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Multifunctional Crown Ether Additive Regulates Desolvation Process to Achieve Highly Reversible Zinc‐Metal Batteries

Advanced Energy Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 9, 2025

Abstract Aqueous zinc‐ion batteries have garnered significant attention due to their abundant materials, low production costs, and safety. However, these suffer from severe side reactions, which are closely associated with the presence of a substantial amount solvent at electrode surfaces. Herein, 1,4,7,10,13,16‐hexaoxacyclooctadecane (18‐crown‐6) is added electrolyte illustrate both theoretically experimentally its contribution rapid desolvation aspect. It shown that addition 18‐crown‐6 greatly facilitates solvated structure prevents collection molecules on surface zinc anode, thus inhibiting hydrogen precipitation reaction. also enhances transference number ions, makes interfacial electric field anode stable promotes orderly diffusion uniform nucleation Zn 2+ , inhibits growth dendrites. As result, containing as additives shows cycle life, Zn||Zn symmetric cell cycled for nearly 1700 h 1 mA cm −2 showing improvement in Coulombic efficiency. The assembled Zn||NH 4 V O 10 exhibits excellent electrochemical performance, reaching capacity 100.9 mAh g −1 even after 4000 cycles 10.0 A .

Language: Английский

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