التفاصيل البيبلوغرافية
| العنوان: |
High-entropy engineering with regulated defect structure and electron interaction tuning active sites for trifunctional electrocatalysis. |
| المؤلفون: |
Xiaoxiao Zou, Jiyang Xie, Zhiyuan Mei, Qi Jing, Xuelin Sheng, Conghui Zhang, Yongxin Yang, Mengjiao Sun, Futong Ren, Lilian Wang, Tianwei He, Youchao Kong, Hong Guo |
| المصدر: |
Proceedings of the National Academy of Sciences of the United States of America; 3/26/2024, Vol. 121 Issue 13, p1-9, 35p |
| مصطلحات موضوعية: |
ELECTROCATALYSIS, HYDROGEN evolution reactions, MULTIWALLED carbon nanotubes, ELECTRONS, WATER electrolysis, CATALYTIC reforming |
| مستخلص: |
High-entropy alloy nanoparticles (HEANs) possessing regulated defect structure and electron interaction exhibit a guideline for constructing multifunctional catalysts. However, the microstructure--activity relationship between active sites of HEANs for multifunctional electrocatalysts is rarely reported. In this work, HEANs distributed on multi-walled carbon nanotubes (HEAN/CNT) are prepared by Joule heating as an example to explain the mechanism of trifunctional electrocatalysis for oxygen reduction, oxygen evolution, and hydrogen evolution reaction. HEAN/CNT excels with unmatched stability, maintaining a 0.8V voltage window for 220 h in zinc-air batteries. Even after 20 h of water electrolysis, its performance remains undiminished, highlighting exceptional endurance and reliability. Moreover, the intrinsic characteristics of the defect structure and electron interaction for HEAN/CNT are investigated in detail. The electrocatalytic mechanism of trifunctional electrocatalysis of HEAN/CNT under different conditions is identified by in situ monitoring and theoretical calculation. Meanwhile, the electron interaction and adaptive regulation of active sites in the trifunctional electrocatalysis of HEANs were further verified by density functional theory. These findings could provide unique ideas for designing inexpensive multifunctional high-entropy electrocatalysts. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
Complementary Index |
