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学者姓名：孙凯安
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Abstract ：
Electrochemical CO2 reduction reaction (CO2RR) provides a promising route to converting CO2 into value-added chemicals and to neutralizing the greenhouse gas emission. For the industrial application of CO2RR, high-performance electrocatalysts featuring high activities and selectivities are essential. It has been demonstrated that customizing the catalyst surface/interface structures allows for high-precision control over the microenvironment for catalysis as well as the adsorption/desorption behaviors of key reaction intermediates in CO2RR, thereby elevating the activity, selectivity and stability of the electrocatalysts. In this paper, we review the progress in customizing the surface/interface structures for CO2RR electrocatalysts (including atomic-site catalysts, metal catalysts, and metal/oxide catalysts). From the perspectives of coordination engineering, atomic interface design, surface modification, and hetero-interface construction, we delineate the resulting specific alterations in surface/interface structures, and their effect on the CO2RR process. At the end of this review, we present a brief discussion and outlook on the current challenges and future directions for achieving high-efficiency CO2RR via surface/interface engineering.
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| GB/T 7714 | Tan, Xin , Zhu, Haojie , He, Chang et al. Customizing catalyst surface/interface structures for electrochemical CO2 reduction [J]. | CHEMICAL SCIENCE , 2024 , 15 (12) : 4292-4312 . |
| MLA | Tan, Xin et al. "Customizing catalyst surface/interface structures for electrochemical CO2 reduction" . | CHEMICAL SCIENCE 15 . 12 (2024) : 4292-4312 . |
| APA | Tan, Xin , Zhu, Haojie , He, Chang , Zhuang, Zewen , Sun, Kaian , Zhang, Chao et al. Customizing catalyst surface/interface structures for electrochemical CO2 reduction . | CHEMICAL SCIENCE , 2024 , 15 (12) , 4292-4312 . |
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Abstract ：
Continuous and effective hydrogen evolution under high current densities remains a challenge for water electrolysis owing to the rapid performance degradation under continuous large-current operation. In this study, theoretical calculations, operando Raman spectroscopy, and CO stripping experiments confirm that Ru nanocrystals have a high resistance against deactivation because of the synergistic adsorption of OH intermediates (OHad) on the Ru and single atoms. Based on this conceptual model, we design the Ni single atoms modifying ultra-small Ru nanoparticle with defect carbon bridging structure (UP-RuNiSAs/C) via a unique unipolar pulse electrodeposition (UPED) strategy. As a result, the UP-RuNiSAs/C is found capable of running steadily for 100 h at 3 A cm-2, and shows a low overpotential of 9 mV at a current density of 10 mA cm-2 under alkaline conditions. Moreover, the UP-RuNiSAs/C allows an anion exchange membrane (AEM) electrolyzer to operate stably at 1.95 Vcell for 250 h at 1 A cm-2. Understanding the sustained stability of alkaline hydrogen evolution at high current densities is crucial. Herein, the authors synthesize Ni single atoms, modified with ultra-small Ru nanoparticles with a defective carbon bridging structure, capable of running steadily for 100 h at 3 A cm-2.
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| GB/T 7714 | Yao, Rui , Sun, Kaian , Zhang, Kaiyang et al. Stable hydrogen evolution reaction at high current densities via designing the Ni single atoms and Ru nanoparticles linked by carbon bridges [J]. | NATURE COMMUNICATIONS , 2024 , 15 (1) . |
| MLA | Yao, Rui et al. "Stable hydrogen evolution reaction at high current densities via designing the Ni single atoms and Ru nanoparticles linked by carbon bridges" . | NATURE COMMUNICATIONS 15 . 1 (2024) . |
| APA | Yao, Rui , Sun, Kaian , Zhang, Kaiyang , Wu, Yun , Du, Yujie , Zhao, Qiang et al. Stable hydrogen evolution reaction at high current densities via designing the Ni single atoms and Ru nanoparticles linked by carbon bridges . | NATURE COMMUNICATIONS , 2024 , 15 (1) . |
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CO and H 2 S poisoning of Pt -based catalysts for hydrogen oxidation reaction (HOR) stands as one of the longstanding hindrances to the widespread commercialization of proton exchange membrane fuel cells. In this paper, a Ru/Ti 4 O 7 catalyst is successfully synthesized by the microwave -thermal method. This Ru/Ti 4 O 7 catalyst shows a much higher noble metal mass activity than those of commercial PtRu/C and conventional Ru/C catalysts. The performance of the Ru/Ti 4 O 7 catalyst under the exist of CO or H 2 S shows insignificant current decay, which is far superior to commercial PtRu/C and Pt/C catalysts. In this Ru/Ti 4 O 7 catalyst, the electron transfer between Ru and Ti to form d -p orbital hybridization is considered to be responsible for the favorable catalytic HOR performance and the corresponding CO and H 2 S tolerance. The interaction mechanism formed by electron transfer may open a promising way for the subsequent development of anti -poisoning catalysts for PEM fuel cell hydrogen oxidation reaction.
Keyword ：
CO poisoning CO poisoning H2 H2 Hydrogen oxidation reaction Hydrogen oxidation reaction PEM fuel cell PEM fuel cell
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| GB/T 7714 | Xie, Yujie , Lian, Bianyong , Deng, Shuqi et al. Advanced Ru/Ti 4 O 7 catalyst for Tolerating CO and H 2 S poisoning to hydrogen oxidation reaction [J]. | INTERNATIONAL JOURNAL OF HYDROGEN ENERGY , 2024 , 65 : 205-214 . |
| MLA | Xie, Yujie et al. "Advanced Ru/Ti 4 O 7 catalyst for Tolerating CO and H 2 S poisoning to hydrogen oxidation reaction" . | INTERNATIONAL JOURNAL OF HYDROGEN ENERGY 65 (2024) : 205-214 . |
| APA | Xie, Yujie , Lian, Bianyong , Deng, Shuqi , Lin, Qingqu , Wang, Kaili , Zheng, Yun et al. Advanced Ru/Ti 4 O 7 catalyst for Tolerating CO and H 2 S poisoning to hydrogen oxidation reaction . | INTERNATIONAL JOURNAL OF HYDROGEN ENERGY , 2024 , 65 , 205-214 . |
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