Low Rh doping accelerated HER/OER bifunctional catalytic activities of nanoflower-like Ni-Co sulfide for greatly boosting overall water splitting

Journal of Colloid and Interface Science, Journal Year: 2024, Volume and Issue: 677, P. 221 - 231

Published: Aug. 9, 2024

Language: Английский

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Reversing the Interfacial Electric Field in Metal Phosphide Heterojunction by Fe‐Doping for Large‐Current Oxygen Evolution Reaction

Advanced Science, Journal Year: 2024, Volume and Issue: 11(21)

Published: April 8, 2024

Abstract Developing non‐precious‐metal electrocatalysts that can operate with a low overpotential at high current density for industrial application is challenging. Heterogeneous bimetallic phosphides have attracted much interest. Despite hydrogen evolution reaction (HER) performance, the ordinary oxygen (OER) performance hinders their practical use. Herein, it shown Fe‐doping reverses and enlarges interfacial electrical field heterojunction, turning H intermediate favorable binding sites HER into O OER. Specifically, self‐supported heterojunction catalysts on nickel foam (CoP@Ni 2 P/NF Fe‐CoP@Fe‐Ni P/NF) are readily synthesized. They only require overpotentials of 266 274 mV to drive large 1000 mA cm −2 ( j ) OER, respectively. Furthermore, water splitting cell equipped these electrodes requires voltage 1.724 V excellent durability, demonstrating potential application. This work offers new insights engineering catalysts.

Language: Английский

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Self-supporting highly branched urchin-like NiCoP/NiFeP heterostructures as efficient bifunctional electrocatalyst for overall water splitting

Journal of Colloid and Interface Science, Journal Year: 2025, Volume and Issue: 687, P. 24 - 35

Published: Feb. 8, 2025

Language: Английский

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High entropy materials: potential catalysts for electrochemical water Splitting

Green Chemistry, Journal Year: 2024, Volume and Issue: 26(18), P. 9569 - 9598

Published: Jan. 1, 2024

A comprehensive overview of the use HEM as a catalyst for HER, OER, and water splitting was provided.

Language: Английский

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Self‐Supported Tungsten Nitride and Carbide Heterostructures with Vanadium Doping Tandemly Catalyze the Conversion of Polysulfides for Lithium‐Sulfur Batteries

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 10, 2024

Abstract The intrinsically sluggish sulfur reduction reaction kinetics and serious shuttle effect of soluble lithium polysulfides (LiPSs) severely impede the practical commercialization lithium‐sulfur (Li‐S) batteries. Herein, self‐supported tungsten nitride carbide heterostructures with vanadium doping that are directly grown on carbon cloth substrate (CC@V‐W 2 N/WC 1‐ x ) creatively designed for Li‐S batteries, which can tandemly catalyze liquid–liquid conversion liquid–solid polysulfide intermediate free any interference from polymer binders conductive additives. Noteworthy, rich heterointerfaces beneficial rapid charge transfer, strong chemical adsorption toward LiPSs, massive exposed catalytically active sites, remarkable catalytic activities. Consequently, batteries assembled CC@V‐W /S cathodes exhibit high utilization, superior rate capability, decent long‐term cycling stability. Furthermore, experimental analyses theoretical calculations jointly substantiate V‐W N component is more effective in catalyzing long‐chain while V‐WC benefits favorable Li S deposition kinetics. More importantly, pouch cells also fabricated to demonstrate their feasibility applications. This work not only highlights significance tandem catalysis consecutive LiPSs but provides a feasible avenue developing highly efficient electrocatalysts high‐performance

Language: Английский

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Transition metal-based heterojunctions for alkaline electrocatalytic water splitting

Coordination Chemistry Reviews, Journal Year: 2024, Volume and Issue: 523, P. 216287 - 216287

Published: Oct. 29, 2024

Language: Английский

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Design principles of metal phosphides for the oxygen evolution reaction in seawater: activity, selectivity and stability

Inorganic Chemistry Frontiers, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Direct seawater electrolysis technology shows great potential, but chloride ions corrode the electrodes and cause competitive reactions, which limits its application.

Language: Английский

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Rational design of V doped CoP/Ni2P heterostructural catalysts for highly efficient ethanol electrolysis

Journal of Alloys and Compounds, Journal Year: 2025, Volume and Issue: unknown, P. 179593 - 179593

Published: March 1, 2025

Language: Английский

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Ce-doped and carbon-coating nano-needle-shaped NiCoP as a superior electrocatalyst for water splitting

Inorganic Chemistry Communications, Journal Year: 2025, Volume and Issue: unknown, P. 114328 - 114328

Published: March 1, 2025

Language: Английский

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Electron Shuttling of Iron‐Oxygen‐Cobalt Bridging in Cobalt Assembled Iron Oxyhydroxide Catalyst Boosts the Urea Oxidation Stability and Activity

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

Published: March 21, 2025

Abstract Iron (Fe)‐based materials hold great potential as urea oxidation reaction (UOR) catalysts, however, the deactivation of active Fe‐oxyhydroxide (FeOOH) species induced by its dissolution during catalytic process under high current densities is still significant challenge. Herein, cobalt (Co) assembled FeOOH constructed, and formation Iron‐Oxygen‐Cobalt (Fe‐O‐Co) bridging triggers electron transfer from Co to Fe sites. This shuttling induces low valence state sites in FeOOH. Co‐FeOOH catalyst achieves a density 1000 mA cm −2 at voltage merely 1.59 V, showing substantial improvement compared pure (1.97 V). Meanwhile, urea‐assisted anion exchange membrane electrolyzer, after 24 h continuous operation , fluctuation 12.4%, significantly lower than that (49.9%). The situ experiments theoretical calculations demonstrate Fe‐O‐Co endows suppressive Fe‐segregation, fast charge Fe(Co)OOH phase negative‐shifted d‐band center metal sites, boosting UOR stability activity.

Language: Английский

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