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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Suppressed Water Reactivity by Zincophilic‐Hydrophobic Electrolyte Additive for Superior Aqueous Zn Metal Batteries

Advanced Energy Materials, Journal Year: 2023, Volume and Issue: 13(43)

Published: Oct. 2, 2023

Abstract As one of the most promising anodes aqueous batteries, Zn metal faces uncontrollable side reactions and deleterious dendrite growth, which drastically compromise its cycle life Coulombic efficiency (CE). To tackle these issues, a versatile electrolyte additive is reported that can regulate solvation structure, adsorb on surface, in situ generate novel zincophilic‐microhydrophobic interphase to isolate anode from reactive water molecules. Benefiting triple effects reactivity modulation, exhibits excellent reversibility with an ultra‐high average CE value 99.92% at 5 mA cm −2 ZnSO 4 system, Zn||Zn symmetric cell ethanesulfonamide achieves long lifespan over 6000 h. The merits ESA additives are further displayed Zn//MnO 2 full cells ion hybrid capacitors, exhibiting capacity retention 81.60% C 1000 cycles, 92.25% 50 000 cycles A g −1 , respectively. What's more, exhibit outstanding stability 100% after 120 0.1 C. This strategy shows alternative for development batteries low‐cost ‐based electrolytes.

Language: Английский

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A Seamless Metal–Organic Framework Interphase with Boosted Zn²⁺ Flux and Deposition Kinetics for Long-Living Rechargeable Zn Batteries

Nano Letters, Journal Year: 2023, Volume and Issue: 23(5), P. 1726 - 1734

Published: Feb. 16, 2023

Zn metal has received immense interest as a promising anode of rechargeable aqueous batteries for grid-scale energy storage. Nevertheless, the uncontrollable dendrite growth and surface parasitic reactions greatly retard its practical implementation. Herein, we demonstrate seamless multifunctional metal-organic framework (MOF) interphase building corrosion-free dendrite-free anodes. The on-site coordinated MOF with 3D open structure could function highly zincophilic mediator ion sifter that synergistically induces fast uniform nucleation/deposition. In addition, corrosion hydrogen evolution are significantly suppressed by interface shielding interphase. An ultrastable plating/stripping is achieved elevated Coulombic efficiency 99.2% over 1000 cycles prolonged lifetime 1100 h at 10 mA cm-2 high cumulative plated capacity 5.5 Ah cm-2. Moreover, modified assures MnO2-based full cells superior rate cycling performance.

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

Advanced Energy Materials, Journal Year: 2023, Volume and Issue: 13(37)

Published: Aug. 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

Language: Английский

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Constructing fast-ion-conductive disordered interphase for high-performance zinc-ion and zinc-iodine batteries

Matter, Journal Year: 2022, Volume and Issue: 5(12), P. 4363 - 4378

Published: Sept. 20, 2022

Language: Английский

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3D Printing of Electron/Ion‐Flux Dual‐Gradient Anodes for Dendrite‐Free Zinc Batteries

Advanced Materials, Journal Year: 2023, Volume and Issue: 35(17)

Published: Feb. 7, 2023

3D porous Zn-metal anodes have aroused widespread interest for Zn-ion batteries (ZIBs). Nevertheless, the notorious "top-growth" dendrites caused by intrinsic top-concentrated ions and randomly distributed electrons may ultimately trigger a cell failure. Herein, an electron/ion-flux dual-gradient Zn anode is reported dendrite-free ZIBs adopting printing technology. The 3D-printed with layer-by-layer bottom-up attenuating Ag nanoparticles (3DP-BU@Zn) establishes electron/ion fluxes, i.e., internal gradient electron flux created bottom-rich conductive nanoparticles, ion resulting from zincophilic which pump toward bottom. Meanwhile, 3D-printing-enabled hierarchical structure continuously conducting network endow unimpeded transfer diffusion among electrode, dominating bottom-preferential deposition behavior. As result, 3DP-BU@Zn symmetrical affords highly reversible plating/stripping extremely small voltage hysteresis of 17.7 mV superior lifespan over 630 h at 1 mA cm-2 mAh . 3DP-BU@Zn//VO2 full exhibits remarkable cyclic stability 500 cycles. This unique strategy sheds light on roadmap next-generation safe durable batteries.

Language: Английский

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

Chemical Society Reviews, Journal Year: 2024, Volume and Issue: 53(10), P. 4877 - 4925

Published: Jan. 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.

Language: Английский

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Recent advances in electrode engineering strategies for aqueous Zn-based batteries

Chem, Journal Year: 2023, Volume and Issue: 9(5), P. 1118 - 1146

Published: April 25, 2023

Language: Английский

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Opportunities and challenges of zinc anodes in rechargeable aqueous batteries

Journal of Materials Chemistry A, Journal Year: 2023, Volume and Issue: 11(23), P. 11987 - 12001

Published: Jan. 1, 2023

This review summarizes the fundamental understanding of issues and strategies on zinc anode. The electrolyte engineering is discussed. Techniques applied analysing interaction between anodes electrolytes are summarized.

Language: Английский

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