无序Ru-O构型对电化学析氢催化性能研究

doi:10.13208/j.electrochem.2214011

电化学（中英文） ›› 2022, Vol. 28 ›› Issue (10): 2214011. doi: 10.13208/j.electrochem.2214011

所属专题： “电催化和燃料电池”专题文章

无序Ru-O构型对电化学析氢催化性能研究

孙雪¹^,², 宋亚杰¹^,², 李仁龙¹, 王家钧¹^,²^,^*()

1.哈尔滨工业大学, 工信部新能源转换与存储关键材料技术重点实验室, 黑龙江哈尔滨,150001
2.哈尔滨工业大学重庆研究院, 四川重庆, 401135

收稿日期:2022-07-09 修回日期:2022-08-28 出版日期:2022-10-28 发布日期:2022-09-30
通讯作者: 王家钧 E-mail:jiajunhit@hit.edu.cn

Catalytic Effect of Disordered Ru-O Configurations for Electrochemical Hydrogen Evolution

Xue Sun¹^,², Ya-Jie Song¹^,², Ren-Long Li¹, Jia-Jun Wang¹^,²^,^*()

1. MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, Harbin Institute of Technology, Harbin, 150001, China
2. Chongqing Research Institute of HIT, Chongqing 401135, P. R. China

Received:2022-07-09 Revised:2022-08-28 Published:2022-10-28 Online:2022-09-30
Contact: Jia-Jun Wang E-mail:jiajunhit@hit.edu.cn

摘要/Abstract

摘要：

相工程被认为是调节催化剂电子结构和催化活性的有效方法。非晶材料的无序构型允许表面电子结构的灵活重整,显示出其作为析氢反应(HER)催化剂的吸引力。在此,我们设计并开发了一种具有无序Ru-O构型的非晶催化剂(a-RuO₂)。结合先进的电镜技术和详细的电化学测试,建立了Ru-O有序性与HER性能的构效关系。具体来说,无序的Ru-O配位显著增强了酸性和碱性 HER 中的催化活性,最终使经济性更高的a-RuO₂催化性能接近商业Pt/C。此外,在10 mA·cm^-2下进行10 h电流-时间(i-t)测试后,a-RuO₂表现出极好的稳定性。进一步的理论模拟显示a-RuO₂较低的d带中心和优化的电子输运调制了活性位点对中间反应物的吸附强度,促进了HER动力学。这项工作为通过相工程探索高活性HER催化剂提供了新的观点。

关键词: 相工程, 电化学析氢, 非晶催化剂, 电子结构

Abstract:

Phase engineering is considered as an effective method for modulating the electronic structure and catalytic activity of catalysts. The disordered conformation of amorphous materials allows flexible reforming of the surface electronic structure, showing their attractiveness as catalysts for hydrogen evolution reaction (HER). Herein, we designed and developed an amorphous ruthenium dioxide (a-RuO₂) catalyst with a disordered Ru-O configuration. The conformational relationship between Ru-O ordering and HER performance is established by combining advanced electron microscopic techniques with detailed electrochemical tests. Specifically, the disordered Ru-O coordination significantly enhanced the HER catalytic activity in both acidic and alkaline media, ultimately leading to HER performance of a-RuO₂ approaching that of commercial Pt/C with higher economics. In addition, a-RuO₂ exhibited excellent stability after 10 h current-time (i-t) testing at 10 mA·cm^-2. Further theoretical simulations showed that the lowered d-band center and optimized electron transport of a-RuO₂ modulated the adsorption strength of the active site to the intermediate reactants, promoting HER kinetics. This work provides a new perspective for exploring highly active HER catalysts through phase engineering.

Key words: phase engineering, hydrogen evolution reaction, amorphous catalyst, electronic structure

孙雪, 宋亚杰, 李仁龙, 王家钧. 无序Ru-O构型对电化学析氢催化性能研究[J]. 电化学（中英文）, 2022, 28(10): 2214011.

Xue Sun, Ya-Jie Song, Ren-Long Li, Jia-Jun Wang. Catalytic Effect of Disordered Ru-O Configurations for Electrochemical Hydrogen Evolution[J]. Journal of Electrochemistry, 2022, 28(10): 2214011.

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链接本文: https://electrochem.xmu.edu.cn/CN/10.13208/j.electrochem.2214011

https://electrochem.xmu.edu.cn/CN/Y2022/V28/I10/2214011

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Sample	$ \frac{m_{\mathrm{Ru}} / M_{\mathrm{Ru}}}{m_{\mathrm{RuO}_{2}} / M_{\mathrm{RuO}_{2}}}$	$ 1-\frac{m_{\mathrm{Ru}} / M_{\mathrm{Ru}}}{m_{\mathrm{RuO}_{2}} / M_{\mathrm{RuO}_{2}}}$
a-RuO₂	34.3%	65.7%
c-RuO₂	33.1%	66.9%

无序Ru-O构型对电化学析氢催化性能研究

Catalytic Effect of Disordered Ru-O Configurations for Electrochemical Hydrogen Evolution

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