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MOSFET: Enhancement Mode01:22

MOSFET: Enhancement Mode

Enhancement-mode MOSFETs are pivotal components in electronics, distinguished by their capacity to act as highly efficient switches. They are part of the larger family of metal-oxide Semiconductor Field-Effect Transistors (MOSFETs). They are available in two types: p-channel and n-channel, each tailored to specific polarity operations.
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Interface Engineering for Improved Large-Current Oxygen Evolution via Partial Phosphorization of Ce-MOF/NiCo-MOF

Dan Liu1, Xuewen Xia1, Xueqiang Zhang1

  • 1State Key Laboratory of Advanced Special Steel & Shanghai Key Laboratory of Advanced Ferrometallurgy, School of Materials Science and Engineering, Shanghai University, Shanghai, 200444, China.

Small (Weinheim an Der Bergstrasse, Germany)
|November 22, 2024
PubMed
Summary

Researchers developed a novel NiCoP/Ce-MOF catalyst for efficient oxygen evolution reactions (OER). This advanced material demonstrates superior performance and stability for industrial water electrolysis applications.

Keywords:
interface engineeringmetal‐organic frameworksnickel cobalt phosphideoxygen evolution reaction

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Catalysis

Background:

  • Interface engineering is crucial for electrocatalyst performance.
  • Developing efficient heterointerfaces for oxygen evolution reactions (OER) at high current densities remains a challenge.

Purpose of the Study:

  • To create a straightforward strategy for constructing enhanced heterointerfaces.
  • To boost electrocatalytic activity for OER through interface optimization.

Main Methods:

  • In situ formation of a NiCo-metal-organic framework (MOF) and Ce-MOF heterostructure via one-step hydrothermal treatment.
  • Partial phosphorization to create NiCoP shells on Ce-MOF cores (NiCoP/Ce-MOF@NF).
  • Experimental and theoretical analyses to understand interface effects and electronic structure.

Main Results:

  • The NiCoP/Ce-MOF@NF heterostructure exhibits a strong interface effect, enhancing charge transfer and reaction kinetics.
  • Achieved an ultralow OER overpotential of 268 mV at 500 mA cm⁻².
  • Demonstrated excellent large-current stability for up to 120 hours.

Conclusions:

  • The developed NiCoP/Ce-MOF@NF catalyst offers a novel approach for designing heterogeneous catalysts with strong interface effects.
  • This strategy significantly enhances OER performance, showing potential for industrial water electrolysis.