Electronic modulation with Pt-incorporated NiFe layered double hydroxide for ultrastable overall water splitting at 1000 mA cm−2

Applied Catalysis B Environment and Energy, Journal Year: 2023, Volume and Issue: 331, P. 122683 - 122683

Published: March 24, 2023

Language: Английский

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A General Self‐Assembly Induced Strategy for Synthesizing 2D Ultrathin Cobalt‐Based Compounds Toward Optimizing Hydrogen Evolution Catalysis

Advanced Functional Materials, Journal Year: 2022, Volume and Issue: 32(51)

Published: Oct. 25, 2022

Abstract Exploring a general method for synthesizing 2D compounds with high accessible surface area and nano‐thickness as advanced electrocatalysts is essential yet challenging. Herein, self‐assembly induced reverse micelle templating followed by topochemical transformation developed to synthesize series of cobalt‐based varied anions similar ultrathin structures. Electrocatalytic behaviors the hydrogen evolution reaction (HER) are systematically investigated, which demonstrate enhanced performances than their agglomerated counterparts. Among them, CoP particularly prominent. The overpotential 144 mV at 10 mA cm −2 , together superb stability, place it among best single‐phase phosphide HER catalysts reported thus far. Theoretical calculation experimental results favorable valence electronic structure moderate adsorbability good intracrystalline conductivity, well homogeneous configuration sufficiently exposed active sites shortened electron transport route, dominant reasons that exhibits optimal electrocatalytic activity HER. This study presents novel extendable strategy various metal‐based valuable insights into modulation essence electrocatalysts.

Language: Английский

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Nanoarchitectonics of Metallene Materials for Electrocatalysis

ACS Nano, Journal Year: 2023, Volume and Issue: 17(14), P. 13017 - 13043

Published: June 27, 2023

Controlling the synthesis of metal nanostructures is one approach for catalyst engineering and performance optimization in electrocatalysis. As an emerging class unconventional electrocatalysts, two-dimensional (2D) metallene electrocatalysts with ultrathin sheet-like morphology have gained ever-growing attention exhibited superior electrocatalysis owing to their distinctive properties originating from structural anisotropy, rich surface chemistry, efficient mass diffusion capability. Many significant advances synthetic methods electrocatalytic applications 2D metallenes been obtained recent years. Therefore, in-depth review summarizing progress developing electrochemical highly needed. Unlike most reported reviews on metallenes, this starts by introducing preparation based classification metals (e.g., noble metals, non-noble metals) instead methods. Some typical strategies preparing each kind are enumerated detail. Then, utilization applications, especially conversion reactions, including hydrogen evolution reaction, oxygen reduction fuel oxidation CO2 N2 comprehensively discussed. Finally, current challenges opportunities future research energy proposed.

Language: Английский

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Coordination engineering in single-site catalysts: General principles, characterizations, and recent advances

Chem, Journal Year: 2023, Volume and Issue: 10(1), P. 48 - 85

Published: Sept. 21, 2023

Language: Английский

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Microwave Quasi‐Solid State to Construct Strong Metal‐Support Interactions with Interfacial Electron‐Enriched Ru for Anion Exchange Membrane Electrolysis

Advanced Energy Materials, Journal Year: 2023, Volume and Issue: 14(8)

Published: Dec. 28, 2023

Abstract Regulating the metal‐support interaction of anchored metal nanoclusters is recognized as valid approach to optimize electrocatalytic performance through tuning interfacial electronic structure. However, developing novel support and understanding electron accumulation on modulating reaction kinetics are still elusive. Herein, highly‐dispersed Ruthenium (Ru) onto phosphorous doped molybdenum boride (Ru/P‐MoB) developed ultrafast microwave‐plasma (60 s) approach. The synthesized Ru/P‐MoB impressively promote hydrogen evolution with low overpotentials 34, 45, 40 mV drive 10 mA cm −2 in alkaline freshwater, seawater acid media. Specially, it presents superior turnover frequency mass/specific activity relative Pt/C, Ru/C, Ru/MoB. Moreover, anion exchange membrane (AEM) electrolyzer cell based can achieve 500 1000 small voltages 1.71 1.78 V good durability. Experimental density functional theoretical (DFT) analysis reveal that strong interactions (Ru─Mo Ru─P bonds) generated electron‐enriched Ru, then favoring water‐molecule adsorption/dissociation optimal H intermediate adsorption free energy. This work provides designing avenue exploit electrocatalysts outstanding catalytic under high current at practical high‐temperature.

Language: Английский

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