A Self‐Regulated Interface Enabled by Multi‐Functional pH Buffer for Reversible Zn Electrochemistry

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(19)

Published: Jan. 18, 2024

Abstract Aqueous Zn‐ion batteries with mild acidic electrolytes are considered the promising energy storage solutions due to their outstanding merits of high density and cost‐effectiveness. However, rampant dendrite growth severe parasitic reactions caused by a series factors such as irregular Zn 2+ transport pathway pH variation would result in poor cycling stability. Herein, self‐regulated interface strategy implemented ammonium persulfate ((NH 4 ) 2 S O 8 , denoted APS) multifunctional additive is proposed simultaneously address above issues. The zincophilic NH + preferentially adsorbs on protuberance exclude water molecules shield “tip effect,” thus inhibiting side‐reactions inducing uniform deposition. Moreover, 2− can dynamically adjust H OH − concentrations self‐buffer manner, effectively mitigating hydrogen evolution reaction formation by‐products. Consequently, existence APS additive, anode exhibits ultrahigh coulombic efficiency (CE) 99.9% over 9000 cycles ultra‐long lifespan 4300 h at 5 mA cm −2 . Furthermore, even under V 10 mass loading (9.4 mg thin zinc foil (10 µm), assembled //Zn pouch cell still maintain stably 210 cycles, demonstrating its excellent value for application.

Language: Английский

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Melamine induced co-regulation of solvation structure and interface engineering to achieve dendrite-free Zn-ion hybrid capacitors

Energy storage materials, Journal Year: 2024, Volume and Issue: 66, P. 103208 - 103208

Published: Jan. 20, 2024

Language: Английский

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In Situ Spontaneous Construction of Zinc Phosphate Coating Layer Toward Highly Reversible Zinc Metal Anodes

Small, Journal Year: 2024, Volume and Issue: 20(29)

Published: Feb. 13, 2024

Aqueous zinc ion batteries have received widespread attention due to their merits of high safety, theoretical specific capacity, low cost, and environmental benignity. Nevertheless, the irreversible issues Zn anode deriving from side reactions dendrite growth hindered its commercialization in large-scale energy storage systems. Herein, a phosphate tetrahydrate (Zn

Language: Английский

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Electrolyte Additive for Interfacial Engineering of Lithium and Zinc Metal Anodes

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

Published: March 4, 2024

Abstract Electrolytes play a crucial role in facilitating the ionic movement between cathode and anode, which is essential for flow of electric current during charging discharging process rechargeable batteries. In particular, electrolyte additives are considered as effective economical approaches into advancements battery technologies both conventional non‐aqueous burgeoning aqueous systems. Herein, systematic comprehensive review reported interfacial engineering Li Zn metal anodes electrolytes, respectively. The types their corresponding functionalities protection these two discussed along with electrochemical features solid interphase (SEI) derived from additives. recent progress on systems also addressed perspectives electrode, electrolyte, associated SEI. Finally, outlook perspective issues future directions field additive presented next‐generation beyond Li‐ion

Language: Английский

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Engineering electrolyte additives for stable zinc-based aqueous batteries: Insights and prospects

Journal of Energy Chemistry, Journal Year: 2024, Volume and Issue: 98, P. 311 - 326

Published: June 27, 2024

Language: Английский

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