通过选择性缺陷碳调整FePc的自旋态以增强氧还原反应

IF 4.3 2区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Chemical Communications Pub Date : 2025-05-27 DOI:10.1039/d5cc01212k

Yanqiu Wang, Jianye Liu, Wenhao He, Zhongliang Tian, JiaJin Yang, Jie Li

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引用次数: 0

摘要

调整FeN4位点的自旋状态以优化其对ORR中间体的吸附强度仍然是一个挑战。本文中，我们证明了通过CO2选择性蚀刻的缺陷工程碳材料可以有效地提高FePc/NC-CO2-900的Fe中心自旋态。与Pt/C和FePc相比，其半波电位为0.90 V， 0.8 V时的动态电流密度为110.6 mA cm−2。理论计算表明，与FePc/NC-CO2-900催化剂相比，自旋态增加的FePc有利于氧分子的活化。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Tuning the spin state of FePc via selectively defected carbon for enhanced oxygen reduction reaction

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Tuning the spin state of FePc via selectively defected carbon for enhanced oxygen reduction reaction

Tuning the spin state of the FeN₄ site to optimize its adsorption strength for the ORR intermediates remains a challenge. Herein, we demonstrate that a defect-engineered carbon material via CO₂ selective etching can effectively raise the spin state of Fe center of FePc/NC-CO₂-900 compared to that of FePc. It shows a higher half-wave potential of 0.90 V and kinetic current density of 110.6 mA cm⁻² at 0.8 V than those of Pt/C and FePc. Theoretical calculations reveal that FePc with increased spin state in FePc/NC-CO₂-900 facilitates the activation of oxygen molecules compared to the FePc catalyst.

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来源期刊

Chemical Communications 化学-化学综合

CiteScore

8.60

自引率

4.10%

发文量

2705

审稿时长

1.4 months

期刊介绍： ChemComm (Chemical Communications) is renowned as the fastest publisher of articles providing information on new avenues of research, drawn from all the world''s major areas of chemical research.