DOI: 10.1002/anie.201409524. Enhanced Electron Penetration through an Ultrathin Graphene Layer for Highly Efficient Catalysis of the Hydrogen Evolution Reaction

Enhanced Electron Penetration through an Ultrathin Graphene Layer for Highly Efficient Catalysis of the Hydrogen Evolution Reaction

10.1002/anie.201409524

Crossref journal-article

Wiley

Angewandte Chemie International Edition (311)

Abstract

AbstractMajor challenges encountered when trying to replace precious‐metal‐based electrocatalysts of the hydrogen evolution reaction (HER) in acidic media are related to the low efficiency and stability of non‐precious‐metal compounds. Therefore, new concepts and strategies have to be devised to develop electrocatalysts that are based on earth‐abundant materials. Herein, we report a hierarchical architecture that consists of ultrathin graphene shells (only 1–3 layers) that encapsulate a uniform CoNi nanoalloy to enhance its HER performance in acidic media. The optimized catalyst exhibits high stability and activity with an onset overpotential of almost zero versus the reversible hydrogen electrode (RHE) and an overpotential of only 142 mV at 10 mA cm−2, which is quite close to that of commercial 40 % Pt/C catalysts. Density functional theory (DFT) calculations indicate that the ultrathin graphene shells strongly promote electron penetration from the CoNi nanoalloy to the graphene surface. With nitrogen dopants, they synergistically increase the electron density on the graphene surface, which results in superior HER activity on the graphene shells.

Bibliography

Deng, J., Ren, P., Deng, D., & Bao, X. (2015). Enhanced Electron Penetration through an Ultrathin Graphene Layer for Highly Efficient Catalysis of the Hydrogen Evolution Reaction. Angewandte Chemie International Edition, 54(7), 2100â2104. Portico.

Authors 4

Jiao Deng (first)
Pengju Ren (additional)
Dehui Deng (additional)
Xinhe Bao (additional)

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Dates

Type	When
Created	10 years, 7 months ago (Jan. 7, 2015, 5:26 a.m.)
Deposited	1 year, 10 months ago (Oct. 16, 2023, 5:33 p.m.)
Indexed	3 days ago (Aug. 31, 2025, 6:04 a.m.)
Issued	10 years, 7 months ago (Jan. 7, 2015)
Published	10 years, 7 months ago (Jan. 7, 2015)
Published Online	10 years, 7 months ago (Jan. 7, 2015)
Published Print	10 years, 6 months ago (Feb. 9, 2015)

Funders 2

National Natural Science Foundation of China 10.13039/501100001809
Region: Asia
gov (National government)
Labels11
1. Chinese National Science Foundation
2. Natural Science Foundation of China
3. National Science Foundation of China
4. NNSF of China
5. NSF of China
6. 国家自然科学基金委员会
7. National Nature Science Foundation of China
8. Guójiā Zìrán Kēxué Jījīn Wěiyuánhuì
9. NSFC
10. NNSF
11. NNSFC
Awards3
1. 21303191
2. 21321002
3. 21033009
Strategic Priority Research Program of the Chinese Academy of Sciences
Awards1
1. XDA09030100

BibTeX

@article{Deng_2015, title={Enhanced Electron Penetration through an Ultrathin Graphene Layer for Highly Efficient Catalysis of the Hydrogen Evolution Reaction}, volume={54}, ISSN={1521-3773}, url={http://dx.doi.org/10.1002/anie.201409524}, DOI={10.1002/anie.201409524}, number={7}, journal={Angewandte Chemie International Edition}, publisher={Wiley}, author={Deng, Jiao and Ren, Pengju and Deng, Dehui and Bao, Xinhe}, year={2015}, month=jan, pages={2100–2104} }

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