Highly Reversible Zn–Air Batteries Enabled by Tuned Valence Electron and Steric Hindrance on Atomic Fe–N₄–C Sites

Nano Letters, Journal Year: 2024, Volume and Issue: 24(15), P. 4672 - 4681

Published: April 8, 2024

The bifunctional oxygen electrocatalyst is the Achilles' heel of achieving robust reversible Zn–air batteries (ZABs). Herein, durable electrocatalysis in alkaline media realized on atomic Fe–N4–C sites reinforced by NixCo3–xO4 (NixCo3–xO4@Fe1/NC). Compared with that pristine Fe1/NC, stability evolution reaction (OER) increased 10 times and reduction (ORR) performance also improved. steric hindrance alters valence electron at sites, resulting a shorter Fe–N bond enhanced sites. corresponding solid-state ZABs exhibit an ultralong lifespan (>460 h 5 mA cm–2) high rate (from 2 to 50 cm–2). Furthermore, structural NixCo3–xO4@Fe1/NC before after OER ORR as well charge–discharge cycling explored. This work develops efficient strategy for improving possibly other processes.

Language: Английский

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Targeted doping induces interfacial orientation for constructing surface-functionalized Schottky junctions to coordinate redox reactions in water electrolysis

Advanced Powder Materials, Journal Year: 2024, Volume and Issue: 3(5), P. 100224 - 100224

Published: July 27, 2024

Tuning the surface properties of catalysts is an effective method for accelerating water electrolysis. Herein, we propose a directional doping and interfacial coupling strategy to design two surface-functionalized Schottky junction coordinating hydrogen evolution reaction (HER) oxygen (OER). Directional with B/S atoms endows amphiphilic g-C3N4 significant n-/p-type semiconductor properties. Further Fe3C modulates energy band levels B–C3N4 S–C3N4, thus resulting in functionalized specific surface-adsorption The space-charge region generated by dual modulation induces local "OH−- H+-enriched" environment, selectively promoting kinetic behavior OER/HER. Impressively, designed B–C3N4@Fe3C||S–C3N4@Fe3C pair requires only low voltage 1.52 ​V achieve efficient electrolysis at 10 ​mA ​cm−2. This work highlights potential redox reactions electrolysis, thereby resolving trade-off between catalytic activity stability.

Language: Английский

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Accelerated O2 adsorption and stabilized *OOH for electrocatalytic H2O2 production

Journal of Material Science and Technology, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Language: Английский

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Pumping Electrons from Oxygen-Bridged Cobalt for Low-Charging-Voltage Zn-Air Batteries

Nano Letters, Journal Year: 2024, Volume and Issue: 24(43), P. 13653 - 13661

Published: Oct. 21, 2024

Reducing the charging voltage is a prerequisite for improving chargeability and energy efficiency of Zn-air batteries (ZABs). Herein, Fe

Language: Английский

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Enhanced internal electric field of CdS/NU-M Z-scheme heterojunction for efficient photocatalytic hydrogen evolution

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 494, P. 153099 - 153099

Published: June 13, 2024

Language: Английский

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Rare earth nanomaterials in electrochemical reduction of carbon dioxide

Coordination Chemistry Reviews, Journal Year: 2024, Volume and Issue: 516, P. 215983 - 215983

Published: May 28, 2024

Language: Английский

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Operando Unraveling the Dynamic Correlation between Structure Evolution and Performance Shift during CO2 Electroreduction on In2O3 Electrodes

Applied Catalysis B Environment and Energy, Journal Year: 2025, Volume and Issue: unknown, P. 125153 - 125153

Published: Feb. 1, 2025

Language: Английский

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Electrochemical CO2 Reduction: Advances, Insights, Challenges, and Future Directions

Materials Today Sustainability, Journal Year: 2025, Volume and Issue: unknown, P. 101089 - 101089

Published: Feb. 1, 2025

Language: Английский

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Heterostructured Electrocatalysts: from Fundamental Microkinetic Model to Electron Configuration and Interfacial Reactive Microenvironment

Advanced Materials, Journal Year: 2025, Volume and Issue: unknown

Published: March 4, 2025

Electrocatalysts can efficiently convert earth-abundant simple molecules into high-value-added products. In this context, heterostructures, which are largely determined by the interface, have emerged as a pivotal architecture for enhancing activity of electrocatalysts. review, atomistic understanding heterostructured electrocatalysts is considered, focusing on reaction kinetic rate and electron configuration, gained from both empirical studies theoretical models. We start fundamentals microkinetic model, adsorption energy theory, electric double layer model. The importance heterostructures to accelerate electrochemical processes via modulating configuration interfacial reactive microenvironment highlighted, considering rectification, space charge region, built-in field, synergistic interactions, lattice strain, geometric effect. conclude review summarizing challenges perspectives in field electrocatalysts, such determination transition state energy, their dynamic evolution, refinement approaches, use machine learning.

Language: Английский

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Hyperspectral and Weather Resistant Biomimetic Leaf Enabled by Interlayer Confinement

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(45)

Published: July 6, 2024

Abstract Mimicking the characteristics and achieving specific functions of biological systems is stirring but challenging. Generally, pigments in commercial coating can only achieve a similarity chromaticity, while cannot obtain solar reflective spectrum whose difficulty resides simulating spectral simultaneously. Unfortunately, traditional organic show poor weather heat resistance. Herein, with little difference color (Δ E ab * ), high similarity, as well adjustable green peak similar red edge slope compared common plants (pagoda tree leaf, etc.) 400–2500 nm, also attained. It achieved by interlayer confined pigment Mg/Al‐layered double hydroxide (Mg/Al‐LDH) layers. The corresponding biomimetic leaf displays hyperspectral performance angle cosine 0.9922 resistance at 120 °C. longer than that mechanical mixing demonstrated. intercalated chromophores sodium copper chlorophyllin Mg/Al‐LDH confinement contribute to excellent performance. This work provides requiring same chromaticity plants, filling long‐term use demand gap for weather‐resistant vegetation.

Language: Английский

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