Construct Robust Epitaxial Growth of (101) Textured Zinc Metal Anode for Long Life and High Capacity in Mild Aqueous Zinc‐Ion Batteries

Advanced Materials, Journal Year: 2023, Volume and Issue: 36(5)

Published: Nov. 23, 2023

Abstract Aqueous zinc‐metal batteries are considered to have the potential for energy storage due their high safety and low cost. However, practical applications of zinc limited by dendrite growth side reactions. Epitaxial is an effective method stabilizing Zn anode, especially manipulating (002) plane deposited zinc. texture difficult achieve stable cycle at capacity its large lattice distortion uneven electric field distribution. Here, a novel anode with highly (101) (denoted as (101)‐Zn) constructed. Due unique directional guidance strong bonding effect, (101)‐Zn can dense vertical electroepitaxy in near‐neutral electrolytes. In addition, grain boundary area inhibits occurrence The resultant symmetric cells exhibit excellent stability over 5300 h (4 mA cm −2 2 mAh ) 330 (15 10 ). Meanwhile, life Zn//MnO full cell meaningfully improved 1000 cycles.

Language: Английский

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Trace Amounts of Triple-Functional Additives Enable Reversible Aqueous Zinc-Ion Batteries from a Comprehensive Perspective

Nano-Micro Letters, Journal Year: 2023, Volume and Issue: 15(1)

Published: March 31, 2023

Although their cost-effectiveness and intrinsic safety, aqueous zinc-ion batteries suffer from notorious side reactions including hydrogen evolution reaction, Zn corrosion passivation, dendrite formation on the anode. Despite numerous strategies to alleviate these have been demonstrated, they can only provide limited performance improvement a single aspect. Herein, triple-functional additive with trace amounts, ammonium hydroxide, was demonstrated comprehensively protect zinc anodes. The results show that shift of electrolyte pH 4.1 5.2 lowers HER potential encourages in situ uniform ZHS-based solid interphase Moreover, cationic NH4+ preferentially adsorb anode surface shield "tip effect" homogenize electric field. Benefitting this comprehensive protection, dendrite-free deposition highly reversible plating/stripping behaviors were realized. Besides, improved electrochemical performances also be achieved Zn//MnO2 full cells by taking advantages additive. This work provides new strategy for stabilizing anodes perspective.

Language: Английский

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A eutectic electrolyte for an ultralong-lived Zn//V₂O₅cell: anin situgenerated gradient solid-electrolyte interphase

Energy & Environmental Science, Journal Year: 2023, Volume and Issue: 16(8), P. 3587 - 3599

Published: Jan. 1, 2023

This study achieved dendrite-free Zn metal anodes for Zn-ion batteries via an in situ generated gradient organic/inorganic hybrid solid–electrolyte interphase enabled by a eutectic electrolyte.

Language: Английский

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Synergistic Cooperation of Zn(002) Texture and Amorphous Zinc Phosphate for Dendrite-Free Zn Anodes

ACS Nano, Journal Year: 2023, Volume and Issue: 17(15), P. 15113 - 15124

Published: July 27, 2023

Zn anodes of aqueous metal batteries face challenges from dendrite growth and side reactions. Building Zn(002) texture mitigates the issues but does not eradicate them. still faces severe corrosive electrolytes growth, especially after hundreds cycles. Therefore, it is necessary to have a passivation layer covering Zn(002). Here, surface coating are achieved on foils by an one-step annealing process, as demonstrated ZnS, ZnSe, ZnF2, Zn3(PO4)2 (ZPO), etc. Using ZPO model, coupling between illustrated in terms dendrite-suppressing ability diffusion energy barrier Zn2+. The modified (Zn(002)@ZPO) exhibit excellent electrochemical performance, far superior or alone. In full cells, performance greatly improved even under harsh conditions, i.e., high areal capacity limited resource. This work achieves crystal engineering simultaneously discloses in-depth insights about synergy orientation layers.

Language: Английский

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Synchronous Dual Electrolyte Additive Sustains Zn Metal Anode with 5600 h Lifespan

Angewandte Chemie International Edition, Journal Year: 2023, Volume and Issue: 62(10)

Published: Jan. 10, 2023

Despite conspicuous merits of Zn metal anodes, the commercialization is still handicapped by rampant dendrite formation and notorious side reaction. Manipulating nucleation mode deposition orientation a key to rendering stabilized anodes. Here, dual electrolyte additive strategy put forward via direct cooperation xylitol (XY) graphene oxide (GO) species into typical zinc sulfate electrolyte. As verified molecular dynamics simulations, incorporated XY molecules could regulate solvation structure Zn2+ , thus inhibiting hydrogen evolution reactions. The self-assembled GO layer in favor facilitating desolvation process accelerate reaction kinetics. Progressive orientational can be realized under synergistic modulation, enabling dense uniform deposition. Consequently, symmetric cell based on additives harvests highly reversible cycling 5600 h at 1.0 mA cm-2 /1.0 mAh .

Language: Английский

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Achieving Highly Proton‐Resistant Zn–Pb Anode through Low Hydrogen Affinity and Strong Bonding for Long‐Life Electrolytic Zn//MnO₂Battery

Advanced Materials, Journal Year: 2023, Volume and Issue: 35(31)

Published: May 20, 2023

High-energy electrolytic Zn//MnO2 batteries show potential for grid-scale energy storage, but the severe hydrogen evolution corrosion (HEC) caused by acidic electrolytes results in subdued durability. Here, an all-around protection strategy is reported achieving stable Zn metal anodes. First, a proton-resistant Pb-containing (Pb and Pb(OH)2 ) interface constructed on anode (denoted as Zn@Pb), which situ forms PbSO4 during H2 SO4 protects substrate from HEC. Second, to improve plating/stripping reversibility of Zn@Pb, Pb(CH3 COO)2 additive Zn@Pb-Ad) introduced, triggers precipitation releases trace Pb2+ that can dynamically deposit Pb layer plating suppress The superior HEC resistance stems low affinity H+ , well strong bonding between Pb-Zn or Pb-Pb, increase reaction overpotential barrier. Consequently, Zn@Pb-Ad//MnO2 battery runs stably 630 795 h 0.2 0.1 m electrolytes, respectively, are >40 times better than bare Zn. as-prepared A h-level achieves one-month calendar life, opening door next generation high-durable batteries.

Language: Английский

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Bio‐Inspired Polyanionic Electrolytes for Highly Stable Zinc‐Ion Batteries

Angewandte Chemie International Edition, Journal Year: 2023, Volume and Issue: 62(41)

Published: Aug. 24, 2023

For zinc-ion batteries (ZIBs), the non-uniform Zn plating/stripping results in a high polarization and low Coulombic efficiency (CE), hindering large-scale application of ZIBs. Here, inspired by biomass seaweed plants, an anionic polyelectrolyte alginate acid (SA) was used to initiate situ formation high-performance solid electrolyte interphase (SEI) layer on anode. Attribute groups -COO

Language: Английский

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Dendrite-Free and Highly Stable Zn Metal Anode with BaTiO₃/P(VDF-TrFE) Coating

ACS Energy Letters, Journal Year: 2023, Volume and Issue: 8(7), P. 2886 - 2896

Published: June 2, 2023

Aqueous rechargeable Zn metal batteries have garnered increasing attention due to their high theoretical capacity, safety, and low cost. However, commercialization has been impeded by the rapid cycling deterioration caused side reactions dendrite growth on anodes. The present work explores a dielectric organic–inorganic film with hydrophobic surface circumvent these problems suppress zinc anode. Dielectric BaTiO3/P(VDF-TrFE) (BTO/PVT) coating demonstrated promote uniform deposition inhibit growth. also regulates Zn-ion desolvation process at interfaces is crucial in preventing water from harming anode surface, leading dendrite-free little formation of byproducts. resulting BTO/PVT@Zn long lifespan 3000 h an average Coulombic efficiency 99.6% 1 mA cm–2. In addition, BTO/PVT@Zn||NH4V4O10 full cell shows good rate capability lifespan.

Language: Английский

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Metallic Particles‐Induced Surface Reconstruction Enabling Highly Durable Zinc Metal Anode

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(38)

Published: June 4, 2023

Abstract Aqueous zinc batteries usher in a renaissance due to their intrinsic security and cost effectiveness, bespeaking vast application foreground for large‐scale energy storage system. However, uncontrolled dendrite growth along with hydrogen evolution severely restricts its reversibility stability practical application. Herein, the surface of Zn metal is reconstructed metallic particles (In, Sn, In 0.2 Sn 0.8 ) diminish defects regulate deposition behavior. The alloyed In–Sn greatly activates lower adsorption barrier expedite plating kinetics confine aggregation. Dense uniform on significantly prevents substrate from dendrites catastrophic damage. Meanwhile, alloy layer embodies high overpotential, ensuring stripping efficiency anode. Consequently, realizes long‐term lifespan up 1800 h low polarization (12 mV) at condition 1 mA cm −2 mAh . When paired sodium vanadate (NVO) cathode, full cell steady operates high‐capacity retention 94.0% after 5000 cycles 5 A g −1 This study provides new insights into surface‐defects dependent process offers guide constructing stable dendrite‐free growth.

Language: Английский

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Loosening Zinc Ions from Separator Boosts Stable Zn Plating/Striping Behavior for Aqueous Zinc Ion Batteries

Advanced Energy Materials, Journal Year: 2023, Volume and Issue: 13(42)

Published: Sept. 25, 2023

Abstract Aqueous zinc ion batteries are attracting broad interest in stationary energy storage where low cost, robust security, and satisfactory capacity matter most. However, metal anodes suffer from destructive dendrite issues during repeated charging/discharging process, decreasing the cycle life of batteries. Herein, smoother plating/striping behaviors achieved by group modification structural unit polymer separator. Experimental results theoretical simulations reveal that skeleton can release more easily when modified with carbonylation side groups contribute to much faster transfer capability. Typically, symmetric Zn cells a thin thickness separator 21 µm exhibit ultralong over 2800 h at 1 mA cm −2 within mAh 300 under high current density 5 areal 3 . Full using sodium vanadium oxide cathode also show stable reversible performance after 2000 cycles A g −1 This work is expected inspire promising strategies molecular design polymeric toward stabilizing beyond this anode itself.

Language: Английский

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