A concurrently optimization of H and OH binding energies in atomically Ni anchored Ru/RuO2 nanosheet driving high CO-tolerant hydrogen oxidation catalysis.

IF 15.7 1区综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES

Nature Communications Pub Date : 2025-10-08 DOI:10.1038/s41467-025-63998-8

Liangbin Liu,Lujie Jin,Renjie Ren,Wei Yan,Nan Fang,Yujin Ji,Youyong Li,Lin Zhuang,Qingyu Kong,Zhiwei Hu,Qi Shao,Xiaoqing Huang

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Abstract

The development of highly active and CO-tolerant hydrogen oxidation reaction (HOR) electrocatalysts is of great significance for alkaline exchange membrane fuel cells (AEMFCs). Here, the designed atomically Ni anchored Ru/RuO2 heterostructure nanosheets (NiSA-Ru@RuO2 NSs/C) exhibit enhanced activity and stability for HOR in alkaline media. The optimized electrocatalyst delivers a high CO-tolerant durability with 92.3% retention in the 1000 ppm CO concentration after 5000 s test. Moreover, the anode catalyst NiSA-Ru@RuO2 NSs/C assembled AEMFCs output a peak power density (PPD) and specific PPD of 1.76 W cm-2 and 17.6 W mgPGM-1 under the H2/O2 condition and performed a long-term stability with negligible decay for 100 h at 0.5 A cm-2 for the AEMFCs. The relative mechanism studies reveal that the Ru/RuO2 heterostructure nanosheet and dispersed Ni single atoms have optimized the *H and *OH adsorption simultaneously and weaken the *CO adsorption. Our work may offer a significant guideline on the rational design of high-performance HOR electrocatalyst for energy-related applications.

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原子Ni锚定Ru/RuO2纳米片中H和OH结合能的同时优化驱动高co耐受性的氢氧化催化。

开发高活性、耐co的氢氧化反应（HOR）电催化剂对碱性交换膜燃料电池（aemfc）具有重要意义。在这里，设计的原子Ni锚定Ru/RuO2异质结构纳米片（NiSA-Ru@RuO2 NSs/C）在碱性介质中表现出增强的HOR活性和稳定性。经过优化的电催化剂提供了高CO耐受性耐久性，在1000 ppm的CO浓度下，经过5000 s的测试，保留率为92.3%。此外，阳极催化剂NiSA-Ru@RuO2 NSs/C组装的aemfc在H2/O2条件下输出的峰值功率密度（PPD）和比功率密度（PPD）分别为1.76 W cm-2和17.6 W mgPGM-1，并且在0.5 a cm-2条件下，aemfc具有100 h的长期稳定性，衰减可以忽略。相关机理研究表明，Ru/RuO2异质结构纳米片和分散的Ni单原子同时优化了*H和*OH的吸附，减弱了*CO的吸附。我们的工作为合理设计高性能HOR电催化剂提供了重要的指导。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Nature Communications Biological Science Disciplines-

CiteScore

24.90

自引率

2.40%

发文量

6928

审稿时长

3.7 months

期刊介绍： Nature Communications, an open-access journal, publishes high-quality research spanning all areas of the natural sciences. Papers featured in the journal showcase significant advances relevant to specialists in each respective field. With a 2-year impact factor of 16.6 (2022) and a median time of 8 days from submission to the first editorial decision, Nature Communications is committed to rapid dissemination of research findings. As a multidisciplinary journal, it welcomes contributions from biological, health, physical, chemical, Earth, social, mathematical, applied, and engineering sciences, aiming to highlight important breakthroughs within each domain.