合理的双原子设计,以促进基于铁的电催化剂的氧降解反应
Shengping You1, Chao Zhang1, Mingyu Yu1
1College of Materials Science and Engineering, Fujian Engineering Research Center of High Energy Batteries and New Energy Equipment and Systems, Fuzhou University, Fuzhou, 350108, China.
Small (Weinheim an der Bergstrasse, Germany)
|May 19, 2025
概括
铁金属双原子催化剂 (Fe-M DAC) 提高了氧降解反应 (ORR) 的性能,超过了单原子催化剂. 本综述探讨了Fe-M DACs的使用情况.
科学领域:
- 材料科学 材料科学 材料科学
- 电化学 电化学 电化学
- 催化剂是一种催化剂.
背景情况:
- 减少氧反应 (ORR) 对燃料电池和电池至关重要,但缺乏高效的催化剂.
- 铁单原子催化剂 (Fe SAC) 是有前途的,但在性能和稳定性方面存在局限性.
- 双原子催化剂 (DACs) 通过向Fe SACs引入第二种金属 (M) 来提供增强的催化性能.
研究的目的:
- 为ORR提供了近期Fe-M DAC在ORR方面的最新进展的全面审查.
- 检查Fe-M DAC的结构,电子和反应通路优势.
- 讨论Fe-M DACs的合成策略,结构-性能关系和表征技术.
主要方法:
- 对ORR的Fe-M DAC进行文献综述.
- 电子结构和反应机制的分析.
- 讨论合成方法和现场表征技术.
- 探索结构与性能之间的关系.
主要成果:
- 与Fe SAC相比,Fe-M DAC表现出增强的催化活性和稳定性.
- 在Fe-M DAC中的第二种金属显著影响电子结构和反应通路.
- 在现场表征提供了对催化动力学和中间体的洞察.
结论:
- 在ORR催化中,Fe-M DACs代表了显著的进步.
- 结合理论,模拟和AI/ML的进一步研究可以加速高度活跃和稳定的Fe-M DAC的设计.
- 在能源转换和储存技术方面,Fe-M DAC具有巨大的潜力.
相关概念视频
Redox Equilibria: Overview
497
A reduction-oxidation reaction is commonly called a redox reaction. In a redox reaction, electrons are transferred from one species to another rather than being shared between or among atoms. The reducing agent or reductant is the species that loses electrons and gets oxidized in the process. The species that gains electrons and gets reduced in the process is the oxidizing agent or oxidant. Redox reactions are represented as two separate equations called half-reactions, where one equation...
497
Redox Reactions
55.3K
Oxidation-reduction or redox reactions involve the transfer of electrons from one molecule or atom to another. When an atom gains an electron, another atom must lose an electron, meaning oxidation and reduction must occur together. Since the redox occurs in pairs, the atom that gets oxidized is also called the reducing agent or reductant, and the atom that is reduced is also called the oxidizing agent or oxidant. A straightforward way to remember the definitions of oxidation and reduction is...
55.3K
Oxidation-Reduction Reactions
64.0K
Oxidation–Reduction Reactions
64.0K
Ladder Diagrams: Redox Equilibria
411
Ladder diagrams are useful tools for understanding redox equilibrium reactions, especially the effects of concentration changes on the electrochemical potential of the reaction. The vertical axis in the redox ladder diagrams represents the electrochemical potential, E. The area of predominance is demarcated using the Nernst equation.
Consider the Fe3+/Fe2+ half-reaction, which has a standard-state potential of +0.771 V. At potentials more positive than +0.771 V, Fe3+ predominates, whereas Fe2+...
Consider the Fe3+/Fe2+ half-reaction, which has a standard-state potential of +0.771 V. At potentials more positive than +0.771 V, Fe3+ predominates, whereas Fe2+...
411
Electrolysis
25.8K
In a galvanic cell, the electrical work is done by a redox system on its surroundings as electrons produced by the spontaneous redox reactions are transferred through an external circuit. Alternatively, an external circuit does work on a redox system by imposing a voltage sufficient to drive an otherwise nonspontaneous reaction in a process known as electrolysis. For instance, recharging a battery involves the use of an external power source to drive the spontaneous (discharge) cell reaction in...
25.8K
Balancing Redox Equations
51.4K
Electrochemistry is the science involved in the interconversion of electrical and chemical reactions. Such reactions are called reduction-oxidation, or redox reactions. These important reactions are defined by changes in oxidation states for one or more reactant elements and include a subset of reactions involving the transfer of electrons between reactant species. Electrochemistry as a field has evolved to yield sufficient insights on the fundamental principles of redox chemistry and multiple...
51.4K


