Sustainable zinc–air battery chemistry: advances, challenges and prospects

Chemical Society Reviews, Journal Year: 2023, Volume and Issue: 52(17), P. 6139 - 6190

Published: Jan. 1, 2023

Sustainable zinc-air batteries (ZABs) are considered promising energy storage devices owing to their inherent safety, high density, wide operating temperature window, environmental friendliness, etc., showing great prospect for future large-scale applications. Thus, tremendous efforts have been devoted addressing the critical challenges associated with sustainable ZABs, aiming significantly improve efficiency and prolong operation lifespan. The growing interest in ZABs requires in-depth research on oxygen electrocatalysts, electrolytes, Zn anodes, which not systematically reviewed date. In this review, fundamentals of electrocatalysts air cathodes, physicochemical properties ZAB issues strategies stabilization anodes summarized from perspective fundamental characteristics design principles. Meanwhile, significant advances situ/operando characterization highlighted provide insights into reaction mechanism dynamic evolution electrolyte|electrode interface. Finally, several thoughts perspectives provided regarding opportunities ZABs. Therefore, review provides a thorough understanding advanced chemistry, hoping that timely comprehensive can shed light upcoming horizons prosperous area.

Language: Английский

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Simultaneously Engineering the Synergistic-Effects and Coordination-Environment of Dual-Single-Atomic Iron/Cobalt-sites as a Bifunctional Oxygen Electrocatalyst for Rechargeable Zinc-Air Batteries

ACS Catalysis, Journal Year: 2023, Volume and Issue: 13(4), P. 2313 - 2325

Published: Jan. 30, 2023

Single-atom introduced carbon nanomaterials show favorable oxygen-reduction reaction (ORR) and oxygen-evolution (OER) performance for renewable energy applications. Nevertheless, the electronic-structure regulation by decorating heterogeneous single-metal-atoms engineering of a single-atom active-sites' microenvironment need to be optimized simultaneously, which is challenging. Herein, we develop an atomic-interfacial-regulation approach fabricate dual single Fe/Co atoms synchronized with both nitrogen/sulfur on defective/graphitic/porous nanosheets (Fe,Co/DSA-NSC). The unsymmetrically organized N S coordinated bridged atomic-sites [Fe-(N2S)/Co-(N2S) moiety] are established prompt charge-transfer, lowering barrier oxygenated reaction-intermediates leading boost reaction-kinetics. As estimated, Fe,Co/DSA-NSC exhibits improved ORR/OER activity higher half-wave potential lower overpotential (E1/2 = 879 mV η10 210 mV, respectively) also good cycling stability toward zinc-air batteries. This discovery hence provides widespread scheme synergistic-principles dual-single-atom catalysts controlled

Language: Английский

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Photocatalytic CO2 reduction using La-Ni bimetallic sites within a covalent organic framework

Nature Communications, Journal Year: 2023, Volume and Issue: 14(1)

Published: April 29, 2023

The precise construction of photocatalysts with diatomic sites that simultaneously foster light absorption and catalytic activity is a formidable challenge, as both processes follow distinct pathways. Herein, an electrostatically driven self-assembly approach used, where phenanthroline used to synthesize bifunctional LaNi within covalent organic framework. La Ni site acts optically catalytically active center for photocarriers generation highly selective CO2-to-CO reduction, respectively. Theory calculations in-situ characterization reveal the directional charge transfer between La-Ni double-atomic sites, leading decreased reaction energy barriers *COOH intermediate enhanced conversion. As result, without any additional photosensitizers, 15.2 times enhancement CO2 reduction rate (605.8 μmol·g-1·h-1) over benchmark framework colloid (39.9 improved CO selectivity (98.2%) are achieved. This work presents potential strategy integrating centers enhance photocatalytic reduction.

Language: Английский

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Atomically Site Synergistic Effects of Dual-Atom Nanozyme Enhances Peroxidase-like Properties

Nano Letters, Journal Year: 2023, Volume and Issue: 23(13), P. 6073 - 6080

Published: June 26, 2023

Pursuing effective and generalized strategies for modulating the electronic structures of atomically dispersed nanozymes with remarkable catalytic performance is exceptionally attractive yet challenging. Herein, we developed a facile "formamide condensation carbonization" strategy to fabricate library single-atom (M1-NC; 6 types) dual-atom (M1/M2-NC; 13 metal-nitrogen-carbon (M = Fe, Co, Ni, Mn, Ru, Cu) reveal peroxidase- (POD-) like activities. The Fe1Co1-NC nanozyme Fe1-N4/Co1-N4 coordination displayed highest POD-like activity. Density functional theory (DFT) calculations revealed that Co atom site synergistically affects d-band center position Fe served as second reaction center, which contributes better Finally, Fe1Co1 NC was shown be in inhibiting tumor growth both vitro vivo, suggesting diatomic synergy an developing artificial novel nanocatalytic therapeutics.

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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Research progress on the construction of synergistic electrocatalytic ORR/OER self-supporting cathodes for zinc–air batteries

Journal of Materials Chemistry A, Journal Year: 2023, Volume and Issue: 11(9), P. 4400 - 4427

Published: Jan. 1, 2023

The synthetic strategies, application and future development of non-precious metal-based self-supporting electrodes for Zn–air batteries have been systematically summarized according to the recent research progress.

Language: Английский

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Recent Advances in Non‐Precious Metal Single‐Atom Electrocatalysts for Oxygen Reduction Reaction in Low‐Temperature Polymer‐Electrolyte Fuel Cells

ChemCatChem, Journal Year: 2023, Volume and Issue: 15(22)

Published: Oct. 9, 2023

Abstract Fuel cells have emerged as a promising clean electrochemical energy technology with great potential in various sectors, including transportation and power generation. However, the high cost scarcity of noble metals currently used to synthesise electrocatalysts for low‐temperature fuel has hindered their widespread commercialisation. In recent decades, development non‐precious metal cathodic oxygen reduction reaction (ORR) gained significant attention. Among those, atomically dispersed active sites, referred single‐atom catalysts (SACs), are gaining more interest. Nanocarbon materials containing single transition atoms coordinated nitrogen ORR both acidic alkaline conditions thus promise be utilised cathode cells. This review article provides an overview advancements utilisation metal‐based SACs proton exchange membrane (PEMFCs) anion (AEMFCs). We highlight main strategies synthetic approaches tailoring properties enhance activity durability. Based on already achieved results, it is evident that indeed could suitable

Language: Английский

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Efficient synergistic effect of trimetallic organic frameworks derived as bifunctional catalysis for the rechargeable zinc-air flow battery

Carbon, Journal Year: 2023, Volume and Issue: 205, P. 422 - 434

Published: Jan. 23, 2023

Language: Английский

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The DFT and Machine Learning Method Accelerated the Discovery of DMSCs with High ORR and OER Catalytic Activities

The Journal of Physical Chemistry Letters, Journal Year: 2024, Volume and Issue: 15(1), P. 281 - 289

Published: Jan. 2, 2024

The oxygen reduction reaction (ORR) and the evolution (OER) are crucial for conversion of clean energy. Recently, dual-metal-site catalysts (DMSCs) have gained much attention due to their high atom utilization, stronger stability, better catalytic performance. An advanced method that combines density functional theory (DFT) machine learning (ML) has been employed in this study investigate adsorption free energies adsorbates on hundreds potential catalysts, with aim screening highly active ORR OER. result is 30 DMSCs activity superior Pt, 10 OER RuO2, 4 bifunctional identified. This work provides guidance rational selection metals prepare a electrocatalytic performance renewable energy applications.

Language: Английский

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Recent Design Strategies for M‐N‐C Single‐Atom Catalysts in Oxygen Reduction: An Entropy Increase Perspective

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(36)

Published: March 18, 2024

Abstract Recently, a diverse array of novel metal‐nitrogen‐carbon (M‐N‐C) single‐atom catalysts (SACs) have rapidly evolve, particularly in the realm oxygen reduction reaction (ORR). Despite plethora proposed design and improvement strategies for SACs, comprehensive review systematically compiling components M‐N‐C from unified perspective is notably absent. For first time, thorough examination each component conducted, focusing on entropy increase active sites SACs. single M‐N 4 whole system, an implies elevated degree disorder chaos. Broadly, entropy‐increasing modification M (single mental sites) guest groups entails augmentation chaos, with most effective co‐catalytic synergy achieved by establishing multiple through “cocktail effect”. Concerning N (nitrogen other heteroatoms) C (carbon supports), induces heightened disorder, symmetry breaking more likely to drive toward adsorbing molecules attain equilibrium symmetric structure. All these innovative led remarkable ORR activity stability offer guiding criterion future preparation

Language: Английский

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