A 3d‐4d‐5d High Entropy Alloy as a Bifunctional Oxygen Catalyst for Robust Aqueous Zinc–Air Batteries

Advanced Materials, Journal Year: 2023, Volume and Issue: 35(46)

Published: July 24, 2023

High entropy alloys (HEAs) are highly suitable candidate catalysts for oxygen evolution and reduction reactions (OER/ORR) as they offer numerous parameters optimizing the electronic structure catalytic sites. Herein, FeCoNiMoW HEA nanoparticles synthesized using a solution-based low-temperature approach. Such show high properties, subtle lattice distortions, modulated structure, leading to superior OER performance with an overpotential of 233 mV at 10 mA cm-2 276 100 . Density functional theory calculations reveal structures active sites optimized d-band center position that enables adsorption OOH* intermediates reduces Gibbs free energy barrier in process. Aqueous zinc-air batteries (ZABs) based on this demonstrate open circuit potential 1.59 V, peak power density 116.9 mW , specific capacity 857 mAh gZn-1, excellent stability over 660 h continuous charge-discharge cycles. Flexible solid ZABs also assembled tested, displaying different bending angles. This work shows significance 4d/5d metal-modulated ability improve OER/ORR, ZABs, beyond.

Language: Английский

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Electrochemical properties of MXenes and applications

Advanced Sensor and Energy Materials, Journal Year: 2023, Volume and Issue: 2(4), P. 100080 - 100080

Published: Oct. 27, 2023

MXenes, a two-dimensional transition metal carbide, nitride, and carbonitride family, have received lot of interest in recent years due to their unique properties diverse applications. This review presents comprehensive analysis the applications electrochemical characteristics providing nuanced viewpoint on potential impact various fields. MXenes large surface area, high electrical conductivity, variable chemistry, making them appealing candidates for energy storage, catalysis, sensing, electronic device The are fully investigated, including charge storage capacity ion diffusion kinetics, highlighting usefulness supercapacitors, lithium-ion batteries, other devices. Furthermore, this study digs into interactions with electrolytes, offering insight obstacles related practical application. also discusses strategies employed modify MXene enhance performance chemistries across devices bio/sensor clarify correlations between required functions. Ultimately, work provides outlook current state research, emphasizing potentially transformative role these materials advancing technology domains.

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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Carbon-based electrocatalysts for rechargeable Zn–air batteries: design concepts, recent progress and future perspectives

Energy & Environmental Science, Journal Year: 2023, Volume and Issue: 17(2), P. 386 - 424

Published: Nov. 22, 2023

This review provides an in-depth discussion of the carbon-based electrocatalysts for rechargeable Zn–air batteries from design strategies, research progress, and future perspectives.

Language: Английский

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A Review of Rechargeable Zinc–Air Batteries: Recent Progress and Future Perspectives

Nano-Micro Letters, Journal Year: 2024, Volume and Issue: 16(1)

Published: Feb. 29, 2024

Zinc-air batteries (ZABs) are gaining attention as an ideal option for various applications requiring high-capacity batteries, such portable electronics, electric vehicles, and renewable energy storage. ZABs offer advantages low environmental impact, enhanced safety compared to Li-ion cost-effectiveness due the abundance of zinc. However, early research faced challenges parasitic reactions at zinc anode slow oxygen redox kinetics. Recent advancements in restructuring anode, utilizing alternative electrolytes, developing bifunctional catalysts have significantly improved ZABs. Scientists achieved battery reversibility over thousands cycles, introduced new efficiency records surpassing 70%. Despite these achievements, there related lower power density, shorter lifespan, air electrode corrosion leading performance degradation. This review paper discusses different configurations, reaction mechanisms electrically mechanically rechargeable ZABs, proposes remedies enhance overall performance. The also explores recent advancements, applications, future prospects electrically/mechanically

Language: Английский

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Highly Reversible Zinc‐Air Batteries at −40 °C Enabled by Anion‐Mediated Biomimetic Fat

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 34(2)

Published: Sept. 24, 2023

Abstract The wide application of portable electrical equipment, aerial vehicles, smart robotics, etc. has boosted the development advanced batteries with safety, high energy density, and environmental adaptability. Inspired by fat layer on animal bodies, biomimetic is constructed as electrolytes solid‐state zinc‐air to achieve excellent cycling performance at low temperatures. Via tailored anion‐H 2 O interaction, antifreezing gel electrolytes, multi‐performance interface compatibility, temperature adaptability, stable power supply simultaneously, build robust Zn|electrolyte interface, thus promoting uniform interfacial electric fields Zn deposition. Excellent long‐term cyclability 120 h a current density 50 mA cm −2 are exhibited 25 °C. Moreover, −40 °C, record‐long life 205 large 10 achieved.

Language: Английский

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Lithium-Induced Oxygen Vacancies in MnO₂@MXene for High-Performance Zinc–Air Batteries

ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: 16(10), P. 12781 - 12792

Published: Feb. 28, 2024

The traditional methods for creating oxygen vacancies in materials present several challenges and limitations, such as high preparation temperatures, limited vacancy generation, morphological destruction, which hinder the application of transition metal oxides field zinc–air batteries (ZABs). In order to address these we have introduced a pioneering lithium reduction strategy generating δ-MnO2@MXene composite materials. This stands out its simplicity implementation, applicability at room temperature, preservation material's structural integrity. research demonstrates that aqueous Ov-MnO2@MXene-5, with vacancies, exhibits an outstanding reaction (ORR) activity ORR half-wave potential reaching 0.787 V. DFT calculations demonstrated enhanced could be attributed adjustments electronic structure alterations adsorption bond lengths. These result from introduction turn promote electron transport catalytic activity. context batteries, cells Ov-MnO2@MXene-5 air cathode exhibit performance, featuring significantly improved maximum power density (198.3 mW cm–2) long-term cycling stability. Through innovative introducing this study has successfully electrochemical performance MnO2, overcoming limitations associated vacancies. Consequently, opens up new avenues directions nonprecious catalyst ZABs.

Language: Английский

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Progress on Bifunctional Carbon‐Based Electrocatalysts for Rechargeable Zinc–Air Batteries Based on Voltage Difference Performance

Advanced Energy Materials, Journal Year: 2024, Volume and Issue: 14(7)

Published: Jan. 14, 2024

Abstract Zinc–air batteries (ZABs) hold potential as clean, cost‐effective, and sustainable energy storage system for the next generation. However, application of ZABs remains challenging because their poor rechargeability low efficiency . The design efficient bifunctional catalysts toward oxygen reduction reaction (ORR) during discharging evolution (OER) charging is essential to developing rechargeable ZABs. Transition metal (TM)‐doped carbon (TM‐C) materials stand out from all available due excellent specific surface area, diverse morphological structures , multiple active sites formed after TM doping. This paper, therefore, focuses on synthesis, electrochemical properties, mechanism TM‐C catalysts. To make a novelty logical statement, voltage difference (Δ E = i 10 − 1/2 ) between ORR/OER catalytic process employed categorize different reported in recent years, which are divided into two groups: I 0.7 0.9 V) II 0.5 V). mechanisms clarified. More ways ideas synthesizing high‐performance also provided. Finally, current problem prospects this group presented.

Language: Английский

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Research progress of Zn-air batteries suitable for extreme temperatures

Energy storage materials, Journal Year: 2024, Volume and Issue: 69, P. 103429 - 103429

Published: April 23, 2024

Language: Английский

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Metal-organic framework/mxene heterostructure and its derivatives as electrode materials for rechargeable Zn-based batteries: Design strategies and perspectives

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 484, P. 149624 - 149624

Published: Feb. 15, 2024

Language: Английский

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