Dendrite-free Zn anode enabled by anionic surfactant-induced horizontal growth for highly-stable aqueous Zn-ion pouch cells

Energy & Environmental Science, Год журнала: 2023, Номер 16(2), С. 687 - 697

Опубликована: Янв. 1, 2023

Here we propose a new anionic surfactant as an electrolyte additive to guide the preferential deposition of Zn 2+ in (002) orientation, suppress side reactions, and realize dendrite-free anode for highly stable aqueous Zn-ion pouch cells.

Язык: Английский

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

Advanced Materials, Год журнала: 2023, Номер 36(5)

Опубликована: Ноя. 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.

Язык: Английский

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Realizing Textured Zinc Metal Anodes through Regulating Electrodeposition Current for Aqueous Zinc Batteries

Angewandte Chemie International Edition, Год журнала: 2023, Номер 62(10)

Опубликована: Янв. 13, 2023

Crystallography modulation of zinc (Zn) metal anode is promising to promote Zn reversibility in aqueous electrolytes, but efficiently constructing with specific crystallographic texture remains challenging. Herein, we report a current-controlled electrodeposition strategy the electrodeposits conventional electrolytes. Using electrolytic cell low-cost Zn(CH3 COO)2 electrolyte and Cu substrate as model system, as-deposited gradually transforms from (101) (002) crystal plane increasing current density 20 80 mA cm-2 . Moreover, high accelerates nucleation rate abundant nuclei, enabling uniform deposition. The permits stronger resistance dendrite growth interfacial side reactions than texture. resultant (002)-textured electrode achieves deep cycling stability supports stable operation full batteries V/Mn-based oxide cathodes.

Язык: Английский

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Zn-based batteries for sustainable energy storage: strategies and mechanisms

Chemical Society Reviews, Год журнала: 2024, Номер 53(10), С. 4877 - 4925

Опубликована: Янв. 1, 2024

This review systematically summarizes various redox mechanisms in Zn-based batteries and design strategies to improve their electrochemical performance, which provides a reference for future development of high-performance batteries.

Язык: Английский

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

ACS Energy Letters, Год журнала: 2023, Номер 8(7), С. 2886 - 2896

Опубликована: Июнь 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.

Язык: Английский

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

Angewandte Chemie International Edition, Год журнала: 2023, Номер 62(10)

Опубликована: Янв. 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 .

Язык: Английский

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Rechargeable Zinc–Air Batteries with an Ultralarge Discharge Capacity per Cycle and an Ultralong Cycle Life

Advanced Materials, Год журнала: 2023, Номер 35(30)

Опубликована: Апрель 17, 2023

A conventional two-electrode rechargeable zinc-air battery (RZAB) has two major problems: 1) opposing requirements for the oxygen reduction (ORR) and evolution (OER) reactions from catalyst at air cathode; 2) zinc-dendrite formation, hydrogen generation, zinc corrosion anode. To tackle these problems, a three-electrode RZAB (T-RZAB) including hydrophobic discharge cathode, hydrophilic charge zinc-free anode is developed. The decoupled cathodes enable fast ORR OER kinetics, avoid oxidization of catalyst. using tin-coated copper foam that induces growth (002)Zn planes, suppresses evolution, prevents Zn corrosion. As result, T-RZABs have high capacity per cycle 800 mAh cm-2 , low voltage gap between discharge/charge platforms 0.66 V, an ultralong life 5220 h current density 10 mA . large T-RZAB with Ah no obvious degradation after cycling 1000 Finally, pack energy 151.8 Wh kg-1 cost 46.7 US dollars kWh-1 assembled.

Язык: Английский

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Dextran: A Multifunctional and Universal Electrolyte Additive for Aqueous Zn Ion Batteries

Advanced Energy Materials, Год журнала: 2023, Номер 13(37)

Опубликована: Авг. 13, 2023

Abstract The aqueous Zn ion battery (ZIB) is a potentially sustainable energy storage device. However, its performance still far from satisfactory. Herein, it demonstrated that branched sugar, dextran, widely used in eyedrop products to relieve irritated eyes, multifunctional and universal electrolyte additive enable high‐performance ZIBs. Experimental theoretical results reveal dextran has four functions: forming surface protective layer minimize side reactions, facilitating stepwise [Zn(H 2 O) 6 ] 2+ desolvation, preferably adsorbing on Zn(0002) planes supply desolvated homogenizing electric field. These functions are universally observed Zn(CF 3 SO ) , ZnSO 4 Zn(ClO ZnCl electrolytes. As demonstrations for practical applications, anodes deliver Coulombic efficiency of 99.97% after 3400 cycles an with 50 mg mL ‒1 cumulative plating capacity mAh cm ‒2 at 5 mA . Zn//V O full cells low negative/positive electrode ratio 2.18 can be stably cycled over 138 1 A g Pouch work under mechanical bending conditions. Zn//polyaniline cycle steadily 3000 0.5 −10 °C. Dextran shows excellent potential as low‐cost non‐toxic safe reliable

Язык: Английский

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Facet‐Termination Promoted Uniform Zn (100) Deposition for High‐Stable Zinc‐Ion Batteries

Advanced Energy Materials, Год журнала: 2023, Номер 13(31)

Опубликована: Июнь 27, 2023

Abstract Reversibility, usually evaluated by Coulombic efficiency (CE) and limited dendrite growth, has become the major roadblock toward widespread commercialization of zincion batteries. Tailoring Zn deposition behavior is vital to prevent growth. In this work, facet‐terminator serine introduced modulate interface obstruct rampant growth (100) plane. The cation (Ser + ) revealed preferentially adsorb onto electrode/electrolyte interface, suppressing interfacial parasitic reaction. Theoretical analysis postmortem/operando experimental techniques indicate that Ser bestows (100)‐dominated morphology zinc anodes, enabling a highly reversible dendrite‐free anode. These features endow anode with long cyclic life more than 800 h for Zn//Zn batteries high average 99.8% at 5 mA cm −2 mAh Zn//Cu When assembling commercial V 2 O , full battery delivers capacity 345.1 g −1 A retention 74.1% over 2000 cycles.

Язык: Английский

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Design Strategies for Aqueous Zinc Metal Batteries with High Zinc Utilization: From Metal Anodes to Anode-Free Structures

Nano-Micro Letters, Год журнала: 2024, Номер 16(1)

Опубликована: Янв. 4, 2024

Aqueous zinc metal batteries (AZMBs) are promising candidates for next-generation energy storage due to the excellent safety, environmental friendliness, natural abundance, high theoretical specific capacity, and low redox potential of (Zn) metal. However, several issues such as dendrite formation, hydrogen evolution, corrosion, passivation Zn anodes cause irreversible loss active materials. To solve these issues, researchers often use large amounts excess ensure a continuous supply materials anodes. This leads ultralow utilization squanders density AZMBs. Herein, design strategies AZMBs with discussed in depth, from utilizing thinner foils constructing anode-free structures 100%, which provides comprehensive guidelines further research. Representative methods calculating depth discharge different first summarized. The reasonable modification foil anodes, current collectors pre-deposited Zn, aqueous (AF-AZMBs) improve then detailed. In particular, working mechanism AF-AZMBs is systematically introduced. Finally, challenges perspectives high-utilization presented.

Язык: Английский

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