MOF‐derived Carbon‐Based Materials for Energy‐Related Applications

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

Published: Jan. 10, 2025

Abstract New carbon‐based materials (CMs) are recommended as attractively active due to their diverse nanostructures and unique electron transport pathways, demonstrating great potential for highly efficient energy storage applications, electrocatalysis, beyond. Among these newly reported CMs, metal–organic framework (MOF)‐derived CMs have achieved impressive development momentum based on high specific surface areas, tunable porosity, flexible structural‐functional integration. However, obstacles regarding the integrity of porous structures, complexity preparation processes, precise control components hinder regulation interface engineering in CMs. In this context, review systematically summarizes latest advances tailored types, processing strategies, energy‐related applications MOF‐derived focuses structure‐activity relationship metal‐free carbon, metal‐doped metallide‐doped carbon. Particularly, intrinsic correlation evolutionary behavior between synergistic interaction micro/nanostructures species with electrochemical performances emphasized. Finally, insights perspectives relevant research presented, future prospects challenges discussed, providing valuable guidance boost high‐performance electrodes a broader range application fields.

Language: Английский

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MOF-Based Electrocatalysts: An Overview from the Perspective of Structural Design

Chemical Reviews, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 18, 2025

The electrocatalytic technique, as an efficient energy storage and conversion technology, has attracted significant attention to address exhaustion environmental pollution. Usually, the activity selectivity of reactions are largely dominated by dynamic process occurring on electrocatalysts. Therefore, high-performance electrocatalysts, which can dominate pathway barrier reactions, great significance for advancement technique. Metal-organic frameworks (MOFs), emerging crystalline porous materials, present structural component advantages including well-defined structure, high surface area, large porosity, diverse components, easy tailorability, demonstrating fantastic potential precise fabrication In this Review, strategies in electrocatalysts based MOF-related materials specifically introduced from aspects catalytic site design microenvironment modulation around sites. Furthermore, representative progress achieved various applications employing MOF-based is systematically summarized, with special emphasis MOFs performance optimization. Finally, remaining challenges future perspectives further highlighted.

Language: Английский

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MOF‐Derived Transition Metal Phosphides for Supercapacitors

Small, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 25, 2025

Abstract Transition metal phosphides (TMPs) in supercapacitors (SCs) applications are increasingly attracting attention because of their exceptional electrochemical performance. MOF‐derived TMPs, possess high specific surface areas, rich pore structure, and controllable chemical compositions, offering promising opportunities for supercapacitor applications. There is a wide variety they exhibit different properties SCs. This work mainly categorizes TMPs (Fe x P, Co Ni y Cu P), then outlines the latest research advancements regarding use as electrode materials SCs, including results synthesis methods structural modulation. Subsequently, SCs discussed. At end, perspectives future developments key challenges highlighted, with aim providing guidance research.

Language: Английский

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Boosting the Hydrogen Evolution Activity of a Low‐Coordinated Co─N─C Catalyst via Vacancy Defect‐Mediated Alteration of the Intermediate Adsorption Configuration

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

Published: Jan. 13, 2025

Abstract The cobalt‐nitrogen‐carbon (Co─N─C) single‐atom catalysts (SACs) are promising alternatives to precious metals for catalyzing the hydrogen evolution reaction (HER) and their activity is highly dependent on coordination environments of metal centers. Herein, a NaHCO 3 etching strategy developed introduce abundant in‐plane pores within carbon substrates that further enable construction low‐coordinated asymmetric Co─N sites with nearby vacancy defects in Co─N─C catalyst. This catalyst exhibits high HER an overpotential ( η ) merely 78 mV deliver current density 10 mA cm −2 , Tafel slope 45.2 dec −1 turnover frequency 1.67 s (at = 100 mV). Experimental investigations theoretical calculations demonstrate neighboring can modulate electronic structure alter adsorption configuration H intermediate from typical atop mode side mode, resulting weakened strength thus improved activity. work provides efficient regulate environment SACs catalytic performance sheds light atomic‐level understanding structure‐activity relationships.

Language: Английский

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A Versatile Self‐Templating Approach for Constructing Ternary Halide Perovskite Heterojunctions to Achieve Concurrent Enhancement in Photocatalytic CO₂ Reduction Activity and Stability

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

Published: Jan. 21, 2025

Abstract Metal halide perovskite (MHP)‐based photocatalysts encounter significant stability challenges in water‐containing systems, posing a major obstacle to their application artificial photosynthesis. Herein, an innovative and universal strategy is present create MHP‐based ternary heterojunctions based on self‐templating method. A series of composite catalysts featuring sandwich hollow structures are constructed, with MHPs such as CsPbBr 3 , Cs Bi 2 I 9 Sb Br AgBiBr 6 serving the intermediate layers. The unique structure effectively shields from direct water contact, allowing exhibit exceptional photocatalytic environments for durations exceeding 200 h. Furthermore, design ensures complete contact between reaction substrates both oxidation reduction functional areas. Compared single materials, heterojunction stronger capability improved charge separation efficiency, leading substantial enhancement CO performance. Notably, layer achieves electron consumption rate up 1824 µmol g −1 h reduction, which far superior other reported under similar conditions. This study provides potent simultaneously enhancing activity photocatalysts, paving way potential applications

Language: Английский

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Electronic Structure Modulation Induced by the Synergy of Cobalt Low-Nuclearity Clusters and Mononuclear Sites for Efficient Oxygen Electrocatalysis

ACS Nano, Journal Year: 2024, Volume and Issue: 19(1), P. 1600 - 1610

Published: Dec. 27, 2024

The development of high-performance bifunctional single-atom catalysts for use in applications, such as zinc–air batteries, is greatly impeded by mild oxygen reduction and evolution reactions (ORR OER). Herein, we report a electrocatalyst designed to overcome these limitations. catalyst consists well-dispersed low-nuclearity Co clusters adjacent single atoms over nitrogen-doped carbon matrix (CoSA+C/NC). precisely tailored asymmetric electronic structures are achieved with strong interactions between species. optimize the adsorption/desorption strength oxygenated intermediates on single-atomic sites endow exceptional activity under alkaline conditions half-wave potential (E1/2) 0.91 V an overpotential (η) 340 mV at 10 mA cm–2. In addition, battery assembled CoSA+C/NC achieves high power density 284.1 mW cm–2 long operational lifespan 400 h, superior those benchmark Pt/C + RuO2. Experimental findings theoretical analysis reveal that enhanced stems from synergistic sites. Consequently, overbinding *OH suppressed accelerated removal. This work establishes design principle advanced electrocatalysts multiphase metal species bearing interactions.

Language: Английский

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1D Co₆Mo₆C‐Based Heterojunctional Nanowires from Pyrolytically “Squeezing” PMo₁₂/ZIF‐67 Cubes for Efficient Overall Water Electrolysis

Small, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 6, 2025

The bi-transition-metal interstitial compounds (BTMICs) are promising for water electrolysis. previous BTMICs usually composed of irregular particles. Here, this work shows the synthesis novel 1D Co6Mo6C-based heterojunction nanowires (1D Co/Co6Mo6C) with diameters about 50 nm and a length-to-diameter ratio 20 efficient An interesting growth process based on pyrolytically "squeezing" PMo12 (Phosphomolybdic acid)/ZIF-67 (Zeolitic Imidazolate Framework-67) cube precursor is demonstrated. related to role Mo species isolating Co species. A series tests theoretical calculation show mutual regulation optimize electronic structure, accelerating H2O dissociation reduction kinetics H+. Additionally, provide pathways electron transfer transmission reactants. Consequently, Co/Co6Mo6C exhibits high activity hydrogen evolution reaction (η10 31 mV) oxygen 210 in 1 m KOH. electrolytic cell requires low voltage 1.43 V drive 10 mA cm-2. catalyst also good HER performance phosphate-buffered saline solution, exceeding Pt/C at current density >42

Language: Английский

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Review—Meeting Fuel Cell Catalyst Requirements for Heavy-Duty Vehicle Applications

Journal of The Electrochemical Society, Journal Year: 2025, Volume and Issue: 172(2), P. 024501 - 024501

Published: Jan. 24, 2025

Catalyst requirements for proton exchange membrane (PEM) fuel cells differ by applications. Commercial heavy-duty vehicle (HDV) applications consume more H 2 and demand higher durability than many others the total cost of ownership (TCO) is largely related to performance catalysts. This article written bridge gap between industrial academic activity advanced cathode catalysts with an emphasis on durability. From a materials perspective, underlying nature carbon support, Pt-alloy crystal structure, stability alloying element, ionomer volume fraction, catalyst-ionomer interface play critical role in improving We provide our perspective four major approaches, namely, mesoporous supports, ordered PtCo intermetallic alloys, thrifting shell-protection strategies that are currently being pursued. While each approach has its merits demerits, their key developmental needs future highlighted.

Language: Английский

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Advancements in Understanding the Physicochemical Properties of Reticular Materials: An In Situ and Operando Spectroscopic Perspective

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

Published: Feb. 24, 2025

The application of in situ and operando spectroscopic techniques has significantly advanced the understanding reticular materials, particularly metal-organic frameworks (MOFs) covalent organic (COFs). These offer real-time insights into dynamic structural, electronic, chemical changes that occur within these materials during various processes, such as catalysis, sorption, material synthesis. This review offers a comprehensive overview key used to investigate formation, functionalization, catalytic behavior materials. How have elucidated roles active sites, reaction intermediates, structural transformations under conditions, especially single-site electrocatalysis, photocatalysis, is highlighted. also discusses challenges opportunities lie ahead integrating methods with aiming foster further innovation design versatile

Language: Английский

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MOF Derived Phosphide Nanocubes with Internal Heterojunction: A Study Powered by Single Entity Electrochemistry

Nano Letters, Journal Year: 2025, Volume and Issue: unknown

Published: March 17, 2025

Metal–organic frameworks (MOFs) and their derivatives have captivated immense interest due to tunable chemical composition structures. Our research introduces an elegant strategy for advancing hybrid MOF-based electrocatalysts, employing scanning electrochemical cell microscopy (SECCM) single-entity electrochemistry probing of individual particles with precisely engineered compositions We achieved controlled phosphidation Prussian blue analogues, forming hollow nanocubes Fe-doped CoP/Co2P heterojunctions, which demonstrated significantly enhanced hydrogen evolution reaction (HER) activity, emphasizing the pivotal role structural compositional tuning in transition metal phosphide catalysts. Utilizing SECCM, we probed intrinsic HER activity nanocubes, correlating behavior size composition. Computational insights revealed that heterojunctions electronic conductivity spin density, established internal electric fields, minimized Gibbs free energy barrier. This study paves way toward advanced nanostructured underscoring crucial interplay between size, structure, composition, catalytic efficacy.

Language: Английский

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