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Updated: Jul 4, 2025

Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction
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Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction

Published on: April 10, 2018

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附近的原子环境对Fe-N-C催化剂对氧减少反应的影响:基于密度函数理论的研究研究

PengFei Yuan1, Chong Li2, Jiannan Zhang3

  • 1Shandong Laboratory of Yantai Advanced Materials and Green Manufacturing, Yantai 265503, China. pfyuan@amgm.ac.cn.

Physical chemistry chemical physics : PCCP
|February 7, 2024
PubMed
概括

Fe-N-C催化剂对燃料电池具有前景,但Fe-N4位点附近的原子结构是关键. 这项研究确定了增强氧降解反应 (ORR) 活性的最佳原子配置.

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Factors Influencing the Rate of Chemical Reactions

A variety of factors influence the rate of chemical reactions. For a chemical reaction to happen, atoms must collide with enough energy to overcome the repulsion between their electrons. This energy is called activation energy. Factors influencing the rate of reaction either lower the activation energy or increase the likelihood of a successful collision.
Concentration and Pressure:
The more particles present within a given space, the more likely those particles are to bump into one another....
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The extended Debye-Hückel equation indicates that the activity coefficient of an ion in an aqueous solution at 25°C depends on three partially interdependent properties: the ionic strength of the solution, the charge of the ion, and the ion size. 
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Catalysis

The presence of a catalyst affects the rate of a chemical reaction. A catalyst is a substance that can increase the reaction rate without being consumed during the process. A basic comprehension of a catalysts’ role during chemical reactions can be understood from the concept of reaction mechanisms and energy diagrams.
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The Collision Theory
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