相关实验视频

Updated: Jan 15, 2026

Synthesis of Platinum-nickel Nanowires and Optimization for Oxygen Reduction Performance

Synthesis of Platinum-nickel Nanowires and Optimization for Oxygen Reduction Performance

Published on: April 27, 2018

具有共存 Pt 单个原子和集群的二维双半孔催化网络,用于增强氧降解反应

Fangzheng Wang¹, Tie Shu¹, Runfan Zheng¹

¹College of Chemistry and Chemical Engineering, Chongqing University, Chongqing 401331, P. R. China. lijing@cqu.edu.cn.

Chemical communications (Cambridge, England)

|October 8, 2025

概括

一种新的盐方法可以创建一个可扩展的,双半孔催化剂,单个原子和集群. 这种先进的催化剂显示了燃料电池中氧降解反应 (ORR) 的高活性和耐用性.

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:

单个原子集群共存的催化剂对氧减少反应 (ORR) 有希望,但面临合成挑战.
可扩展和高效的催化剂设计对于推进燃料电池技术至关重要.

研究的目的:

开发一种绿色,可扩展的合成战略,用于双原子/集群共存的催化剂.
为提高ORR性能设计一种独特的双半孔结构.

主要方法:

使用NaCl的盐模板策略被用于催化剂合成.
使用化和水洗,创建了一个2D超薄的半孔碳支体.
的单个原子和集群被定在带有边缘缺陷的化碳支上.

主要成果:

合成的 Pt_SA-NC/2D-OMCNs 催化剂具有双重介质孔 (小~3.8 nm,大20-30 nm) 以增加活性位点密度和改善质量传输.
实现了Pt单个原子和集群的均分散和结构稳定性.
催化剂在三电极和燃料电池测试中表现出极好的ORR活性和长期耐用性.

结论:

开发的盐策略为高性能,低Pt ORR催化剂提供了一个可扩展的途径.
双半孔架构有效提高了催化效率和稳定性.
这项工作扩大了原子集群共存催化剂在燃料电池电催化剂中的应用.

更多相关视频

Tuning the Acidity of Pt/ CNTs Catalysts for Hydrodeoxygenation of Diphenyl Ether

Tuning the Acidity of Pt/ CNTs Catalysts for Hydrodeoxygenation of Diphenyl Ether

Published on: August 17, 2019

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

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

Published on: April 10, 2018

相关概念视频

Catalysis

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.

Oxidation of Alkenes: Syn Dihydroxylation with Osmium Tetraoxide

Oxidation of Alkenes: Syn Dihydroxylation with Osmium Tetraoxide

Alkenes are converted to 1,2-diols or glycols through a process called dihydroxylation. It involves the addition of two hydroxyl groups across the double bond with two different stereochemical approaches, namely anti and syn. Dihydroxylation using osmium tetroxide progresses with syn stereochemistry.