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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In‐Situ Integration of a Hydrophobic and Fast‐Zn²⁺‐Conductive Inorganic Interphase to Stabilize Zn Metal Anodes

Angewandte Chemie International Edition, Journal Year: 2023, Volume and Issue: 62(27)

Published: May 2, 2023

The irreversible issues of Zn anode stemming from dendrite growth and water-induced erosion have severely hindered the commercialization rechargeable aqueous batteries. Herein, a hydrophobic fast-Zn2+ -conductive zinc hexacyanoferrate (HB-ZnHCF) interphase layer is in situ integrated on by rapid room-temperature wet-chemistry method to address these dilemmas. Different currently proposed hydrophilic inorganic cases, compact HB-ZnHCF effectively prevents access water molecules surface, thus avoiding H2 evolution corrosion. Moreover, with large internal ion channels, strong zincophilicity, high Zn2+ transference number (0.86) permits fast transport enables smooth deposition. Remarkably, resultant HB-ZnHCF@Zn electrode delivers unprecedented reversibility 99.88 % Coulombic efficiency over 3000 cycles, realizes long-term cycling 5800 h (>8 months, 1 mA cm-2 ) 1000 (10 ), assures stable operation full battery both coin- pouch-type configurations.

Language: Английский

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Manipulating Zn 002 deposition plane with zirconium ion crosslinked hydrogel electrolyte toward dendrite free Zn metal anodes

Energy & Environmental Science, Journal Year: 2023, Volume and Issue: 16(10), P. 4561 - 4571

Published: Jan. 1, 2023

A Zr 4+ crosslinked hydrogel electrolyte is demonstrated on side reaction resistance for high-performance aqueous Zn-based devices.

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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Guiding Zn Uniform Deposition with Polymer Additives for Long‐lasting and Highly Utilized Zn Metal Anodes

Angewandte Chemie International Edition, Journal Year: 2023, Volume and Issue: 62(51)

Published: Nov. 6, 2023

The parasitic side reaction on Zn anode is the key issue which hinders development of aqueous Zn-based energy storage systems power-grid applications. Here, a polymer additive (PMCNA) engineered by copolymerizing 2-methacryloyloxyethyl phosphorylcholine (MPC) and N-acryloyl glycinamide (NAGA) was employed to regulate deposition environment for satisfying inhibition performance during long-term cycling with high utilization. PMCNA can preferentially adsorb metal surface form uniform protective layer effective water molecule repelling resistance. In addition, guide nucleation along 002 plane further dendrite suppression. Consequently, enable Zn//Zn battery an ultrahigh depth discharge (DOD) 90.0 % over 420 h, Zn//active carbon (AC) capacitor long lifespan, Zn//PANI utilization 51.3 at low N/P ratio 2.6.

Language: Английский

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Engineering an Ultrathin and Hydrophobic Composite Zinc Anode with 24 µm Thickness for High‐Performance Zn Batteries

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(40)

Published: June 5, 2023

Abstract The Zn metal anode is subject to uncontrolled dendrites and parasitic reactions, which often require a big thickness of foil, resulting in excess capacity extremely low utilization. Here, an ultrathin composite (24 µm) developed with protective hydrophobic layer (covalent (C 2 F 4 ) n chains F‐doped carbonized ingredient) constructed on Cu foil (denoted as ‐C@Cu) host by one‐step pyrolytic evaporation deposition. repulsion 2+ makes the ‐C@Cu interface possess enhanced adsorption ability, driving more charge transfer under layer. With its good hydrophobicity, this prevents H O from damaging plated Zn. Combined semi‐ionic‐state fluorine zincophilic site, guides uniform dense deposition for making anode. As result, electrode exhibits high average CE 99.6% over 3000 cycles at mA cm −2 . Benchmarked against commercial 20µm‐Zn ‐C@Cu@Zn achieves stability (1200 h 1 ), only 100 foil. When paired V 5 cathode, full cell deliver 88% retention 2500 cycles.

Language: Английский

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Highly Compact Zinc Metal Anode and Wide‐Temperature Aqueous Electrolyte Enabled by Acetamide Additives for Deep Cycling Zn Batteries

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(18)

Published: Jan. 25, 2024

Abstract Rechargeable aqueous zinc (Zn) batteries are a promising candidate for large‐scale energy storage, but the noncompact and dendritic Zn deposition, water‐induced parasitic reaction, narrow operating temperature range severely hinder their practical application. Here, it is demonstrated that these challenges can be conquered by introducing low‐cost acetamide (Ace) into electrolytes. The non‐sacrificial Ace molecules with both donor acceptor groups disrupt original H‐bonded network of water, replace solvating‐H 2 O in 2+ ‐solvation sheath, form dynamic adsorption on Zn, create an H O‐poor electrical double‐layer. Consequently, presence suppresses water erosion homogenizes nucleation/growth, reduces reactivity, depresses freezing point electrolyte. formulated Ace‐containing electrolyte features wide from −20 to 60 °C enables highly compact dendrite‐free electrodeposition even at 25 mAh cm −2 using non‐pressure electrolytic cell. Moreover, allows electrodes achieve long‐term lifespan across −20–60 excellent deep cycling stability under 85.3% depth‐of‐discharge (25 ) over 400 h, supports stable operation Zn–Iodine full harsh conditions.

Language: Английский

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Orientational Electrodeposition of Highly (002)-Textured Zinc Metal Anodes Enabled by Iodide Ions for Stable Aqueous Zinc Batteries

ACS Nano, Journal Year: 2023, Volume and Issue: 17(23), P. 23861 - 23871

Published: Nov. 15, 2023

Regulating the crystallographic texture of zinc (Zn) metal anode is promising to promote Zn reversibility in aqueous electrolytes, but direct fabrication specific textured still remains challenging. Herein, we report a facile iodide ion (I-)-assisted electrodeposition strategy that can scalably fabricate highly (002) crystal plane-textured (H-(002)-Zn). Theoretical and experimental characterizations demonstrate presence I- additives significantly elevate growth rate (100) plane, homogenize nucleation, plating kinetics, thus enabling uniform H-(002)-Zn electrodeposition. Taking electrolytic cell with conventional ZnSO4-based electrolyte commercial Cu substrate as model system, gradually transforms from (101) increase NaI additive concentration. In optimized 1 M ZnSO4 + 0.8 electrolyte, as-prepared features compact structure an ultrahigh intensity ratio signal without containing signal. The free-standing electrode manifests stronger resistance interfacial side reactions than (101)-textured electrode, delivering high efficiency 99.88% over 400 cycles ultralong cycling lifespan 6700 h (>9 months at mA cm-2) assuring stable operation full batteries. This work will enlighten efficient electrosynthesis high-performance anodes for practical

Language: Английский

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Selective Shielding of the (002) Plane Enabling Vertically Oriented Zinc Plating for Dendrite‐Free Zinc Anode

Advanced Materials, Journal Year: 2023, Volume and Issue: 36(11)

Published: Dec. 13, 2023

Uncontrolled growth of Zn dendrites hinders the future development aqueous Zn-ion batteries. Despite that (100) plane possesses better zincophilic ability and fast kinetics, are generally suppressed via (002) plane-oriented deposition in previous reports; ordered plane-dominant deposition, especially under high current density has not yet been realized. Herein, vertically-oriented plating with preferential is reported using disodium lauryl phosphate (DLP) as an electrolyte additive. DLP preferentially anchored on crystal polar group, then atoms retarded by long alkyl chain, finally promoting preferred plane. This unique pattern results ultrastable plating/stripping at a super-high 50 mA cm

Language: Английский

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Cell-nucleus structured electrolyte for low-temperature aqueous zinc batteries

Journal of Energy Chemistry, Journal Year: 2023, Volume and Issue: 83, P. 324 - 332

Published: April 27, 2023

Language: Английский

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