Home > News > Content
Progress Was Made In The Research On The Efficient Electrocatalytic Oxygen Reduction Of Single Atomic Metal Catalyst.
Mar 27, 2018

The Latest News: http://sh.qihoo.com/pc/91d8b500481a33e17?sign=360_e39369d1


Electrochemical oxygen reduction (ORR) reaction plays a key role in fuel cell, metal - air battery and other fields.

It is a hot research direction in this field to find high activity, high cost performance, high utilization rate and long life non-precious metal ORR catalyst to replace noble metal Pt catalyst.

Though non-noble metal monatomic catalyst has a high efficiency, highly active and selective, but its easy to gather and lose in the process of synthesis and catalytic activity, through a simple method to obtain stable dispersion of monatomic catalyst is urgently needed to overcome problems.

Recently, the Chinese academy of sciences, fujian institute of material structure of the national key laboratory of structural chemistry wing cho, vc inducer standard team using lamictal base hematin chloride as monomer, success through ion hot method, one step synthesis won the immobilized on porous porphyrin covalent triazine framework material on the single atom Fe - N4 interchange catalyst.

Recently, the Chinese academy of sciences, fujian institute of material structure of the national key laboratory of structural chemistry wing cho, vc inducer standard team using lamictal base hematin chloride as monomer, success through ion hot method, one step synthesis won the immobilized on porous porphyrin covalent triazine framework material on the single atom Fe - N4 interchange catalyst.In the spherical aberration electron microscopy, iron nanoparticles were not observed in the single atom catalyst, and the Fe atoms were distributed at the atomic level.The extended X-ray absorption fine structure (EXAFS) indicates that four nitrogen atoms around each iron atom form a stable fe-n4 structure.Therefore, the ORR activity of the monoatomic catalyst in acid and alkaline conditions is better than that of the commercially available platinum carbon catalyst (20%Pt/C), with higher stability and better anti-methanol poisoning ability.This study provides a new way for the design and synthesis of highly efficient single atomic non-precious metal catalysts and provides important reference for the development of new and high efficient electric catalysts.

The research findings were published in ACS Energy Letters.The research has been supported by national key research and development plans, national natural science foundation of China, strategic pilot science and technology project of the Chinese academy of sciences, and key research projects of the Chinese academy of sciences.

A.webp.jpg