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Engineering single-atomic ruthenium catalytic sites on defective nickel-iron layered double hydroxide for overall water splitting
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- Zhai, Panlong (author)
- Dalian Univ Technol, Sch Chem Engn, State Key Lab Fine Chem, Dalian, Peoples R China.
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- Xia, Mingyue (author)
- Dalian Univ Technol, Minist Educ, Lab Mat Modificat Laser Ion & Electron Beams, Dalian, Peoples R China.
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- Wu, Yunzhen (author)
- Dalian Univ Technol, Sch Chem Engn, State Key Lab Fine Chem, Dalian, Peoples R China.
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- Dalian Univ Technol, Sch Chem Engn, State Key Lab Fine Chem, Dalian, Peoples R China Dalian Univ Technol, Minist Educ, Lab Mat Modificat Laser Ion & Electron Beams, Dalian, Peoples R China. (creator_code:org_t)
- 2021-07-28
- 2021
- English.
- In: Nature Communications. - : Springer Nature. - 2041-1723. ; 12:1
- Journal article (peer-reviewed)
Abstract
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- Rational design of single atom catalyst is critical for efficient sustainable energy conversion. However, the atomic-level control of active sites is essential for electrocatalytic materials in alkaline electrolyte. Moreover, well-defined surface structures lead to in-depth understanding of catalytic mechanisms. Herein, we report a single-atomic-site ruthenium stabilized on defective nickel-iron layered double hydroxide nanosheets (Ru-1/D-NiFe LDH). Under precise regulation of local coordination environments of catalytically active sites and the existence of the defects, Ru-1/D-NiFe LDH delivers an ultralow overpotential of 18mV at 10mAcm(-2) for hydrogen evolution reaction, surpassing the commercial Pt/C catalyst. Density functional theory calculations reveal that Ru-1/D-NiFe LDH optimizes the adsorption energies of intermediates for hydrogen evolution reaction and promotes the O-O coupling at a Ru-O active site for oxygen evolution reaction. The Ru-1/D-NiFe LDH as an ideal model reveals superior water splitting performance with potential for the development of promising water-alkali electrocatalysts. Rational design of single atom catalyst is critical for efficient sustainable energy conversion. Single-atomic-site ruthenium stabilized on defective nickel-iron layered double hydroxide nanosheets achieve superior HER and OER performance in alkaline media.
Subject headings
- NATURVETENSKAP -- Kemi -- Materialkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Materials Chemistry (hsv//eng)
- NATURVETENSKAP -- Kemi -- Organisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Organic Chemistry (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Kemiteknik -- Annan kemiteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Chemical Engineering -- Other Chemical Engineering (hsv//eng)
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