Polymer gels for aqueous metal batteries

Progress in Materials Science, Год журнала: 2025, Номер unknown, С. 101426 - 101426

Опубликована: Янв. 1, 2025

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Foam-like Porous Structured Trimetal Electrocatalysts Exhibiting Superior Performance for Overall Water Splitting and Solid–Liquid Zinc–Air Batteries

ACS Applied Materials & Interfaces, Год журнала: 2025, Номер unknown

Опубликована: Фев. 5, 2025

Electrocatalysts through an interconnected porous structure that are highly durable, active, and affordable for industrial scale production necessary electricity conversion storage devices with superior effectiveness. In the present study, we synthesized free-standing tri-metal oxide (FeNiCoO4) on top of incredibly foam-like (FNCO) via a simple method. The enhanced FNCO-600 showed remarkable electrocatalytic activity outstanding stability to related half-cell responses regard oxygen reduction reaction (ORR = 0.757 V), evolution (OER 230 mV), hydrogen (HER 211 mV). Additionally, looked into overall efficiency water splitting using catalyst, which exhibited exceptional longevity (70 h) impressive cell voltage (1.72 V). Furthermore, as cathode, created rechargeable solid-liquid electrolyte-based Zn-air batteries demonstrated power densities 21.8 mW cm-2 167.4 noteworthy durability. Finally, how synthesize produce free-standing, catalysts provide excellent energy conversion.

Язык: Английский

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Microstructure and bionic engineering of triphase reaction interface for zinc-air batteries

Progress in Materials Science, Год журнала: 2024, Номер 147, С. 101356 - 101356

Опубликована: Авг. 27, 2024

Язык: Английский

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Rational Design of Bimetal Nanoparticles Anchored Hierarchical Carbon Nanospheres with Abundant Active Sites for High-Performance Liquid/Flexible Zinc-Air Batteries

Опубликована: Янв. 1, 2025

The development of highly active bifunctional electrocatalysts is crucial to the sluggish oxygen reduction reaction/oxygen evolution reaction (ORR/OER) for efficient wearable Zn–air batteries (ZAB). Fe-Nx-C moieties anchored on carbon supports emerge as a desirable alternative ORR catalysts but its OER activity suffers from low catalytic performance and stability. Herein, N-doped carbon-encapsulated Fe3C MnO nanoparticles composite (FeMn-NC) was developed using simple one-step pyrolysis self-sacrificial template. obtained FeMn-NC possess hierarchical porous structure with large specific surface area rich pyridinic N, which are favorable exposure sites. introduction Fe3C/MnO interface can regulate charge redistribution promote ORR/OER kinetics, confirmed by theoretical calculations. exhibits an excellent in alkaline electrolytes.The assembled liquid ZAB cathode achieve ultrahigh capacity 831.7 mAh g-1 charge-discharged stability up 800 h at 10 mA cm⁻² (2400 cycles). Furthermore, corresponding flexible solid-state provides stable open-circuit voltage 1.50 V 676.1 g−1 1.0 cm-2 good cycling This work offers strategy synthesize materials properties, be applied other electrochemical energy devices.

Язык: Английский

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Single Zn atoms and hierarchical pore architecture jointly improve oxygen reduction electrocatalysis

Chemical Engineering Science, Год журнала: 2025, Номер unknown, С. 121376 - 121376

Опубликована: Фев. 1, 2025

Язык: Английский

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Design principles of non-noble metal catalysts for high-performance rechargeable Zn-air batteries

Energy storage materials, Год журнала: 2025, Номер unknown, С. 104155 - 104155

Опубликована: Март 1, 2025

Язык: Английский

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Biological Neural Network‐Inspired Micro/Nano‐Fibrous Carbon Aerogel for Coupling Fe Atomic Clusters With Fe‐N₄ Single Atoms to Enhance Oxygen Reduction Reaction

Small, Год журнала: 2025, Номер unknown

Опубликована: Март 5, 2025

Nitrogen-coordinated metal single atoms catalysts, especially with M-N4 configuration confined within the carbon matrix, emerge as a frontier of electrocatalytic research for enhancing sluggish kinetics oxygen reduction reaction (ORR). Nevertheless, due to highly planar D4h symmetry in M-N4, their adsorption behavior toward intermediates is limited, undesirably elevating energy barriers associated ORR. Moreover, structural engineering substrate also poses significant challenges. Herein, inspired by biological neural network (BNN), reticular nervous system high-speed signal processing and transmitting, comprehensive biomimetic strategy proposed tailoring Fe-N4 (Fe SAs) coupled Fe atomic clusters ACs) active sites, which are anchored onto chitosan microfibers/nanofibers-based aerogel (CMNCA-FeSA+AC) continuous conductive channels an oriented porous architecture. Theoretical analysis reveals synergistic effect SAs ACs optimizing electronic structures expediting The ingenious will shed light on topology optimization efficient electrocatalysts advanced electrochemical conversion devices.

Язык: Английский

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A pH universal ORR catalyst with core-shell ZIF-derived binary cobalt/iron sites for Zn-air batteries

Chemical Engineering Journal, Год журнала: 2025, Номер unknown, С. 161543 - 161543

Опубликована: Март 1, 2025

Язык: Английский

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Single‐Atom Co Meets Remote Fe for a Synergistic Boost in Oxygen Electrocatalysis

Advanced Energy Materials, Год журнала: 2025, Номер unknown

Опубликована: Март 16, 2025

Abstract The oxygen electrocatalytic activity of transition metal catalysts can be tuned by tailoring their microstructure to optimize electronic configuration. Here, a one‐step Coordination‐Selective Synthesis strategy is developed integrate Co single‐atom sites and Fe‐based nanoparticles within the same matrix, enabling long‐range interactions that enhance Co‐N 4 reactivity improve reduction reaction performance. X‐ray absorption spectroscopy confirmed remote modulate electron distribution at sites. Structural characterizations reveal optimal catalyst, 50% Fe ‐NC, contains metallic Fe, 3 O , N species. Electrochemical measurements show it achieves onset half‐wave potentials 0.984 0.927 V versus RHE, surpassing 100% ‐NC with only Additionally, demonstrates efficient evolution performance, achieving an overpotential 298 mV 20 mA cm −2 comparable RuO 2 . Density functional theory calculations optimizes O‐containing intermediate adsorption/desorption, lowering theoretical overpotential. Zn‐air batteries assembled exhibited superior performance Pt/C, highlighting its potential for bifunctional electrocatalysis. This study provides approach designing high‐performance utilizing synergistic between atomic nanoscale

Язык: Английский

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Molecularly engineered hyaluronic acid-derived hygroscopic hydrogel electrolytes with anti-freezing and moisturizing capabilities realizing environmental adaptive semi-open flexible zinc-air batteries

Journal of Power Sources, Год журнала: 2025, Номер 640, С. 236804 - 236804

Опубликована: Март 18, 2025

Язык: Английский

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