Elucidating the Origin of Hydrogen Evolution Reaction Activity in Mono- and Bimetallic Metal- and Nitrogen-Doped Carbon Catalysts (Me–N–C)

Shahraei, Ali; Moradabadi, Ashkan; Martinaiou, Ioanna; Lauterbach, Stefan; Klemenz, Sebastian; Dolique, Stephanie; Kleebe, Hans‐Joachim; Kaghazchi, Payam; Kramm, Ulrike I.

doi:10.1021/acsami.7b01647

Cited by 36 publications

(33 citation statements)

References 53 publications

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“…[82c, 108] Ni [79] and Co [9,81,95,109] nanoparticles and alloys [110] are common materials with efficient electrocatalytic activities for the HER. Its alloys with Ni and Co still exhibit excellent electrocatalytic performance in the HER.…”

Section: Heterojunction Strategies For the Hermentioning

confidence: 99%

“…Its alloys with Ni and Co still exhibit excellent electrocatalytic performance in the HER. [82c, 108] Ni [79] and Co [9,81,95,109] nanoparticles and alloys [110] are common materials with efficient electrocatalytic activities for the HER. Besides the frequently used first-row TMs (i.e.,N i, Co, Fe, and Cu), some second-rowT Ms exhibit promising abilities to promote the electrocatalytic activity of N-C-based materials for the HER.…”

Section: Heterojunction Strategies For the Hermentioning

confidence: 99%

“…[7] Moreover,N -C materials that can be used over aw ide range of pH values have been widely proposed, indicating their great stability ando perability. [9] Modulating N-C-based materials with different components can contribute to their electrocatalytic activity for differentr eactions. Doping with heteroatoms and the formation of composites with transition-metal( TM) components bring about changes in the physical and chemical properties of the pristine N-C materials, andt his promotes their electrocatalytic activities.…”

Section: Introductionmentioning

confidence: 99%

“…Doping with heteroatoms and the formation of composites with transition-metal( TM) components bring about changes in the physical and chemical properties of the pristine N-C materials, andt his promotes their electrocatalytic activities. [9] Modulating N-C-based materials with different components can contribute to their electrocatalytic activity for differentr eactions. [10] Notably,T Mc omponents with low stability in strongly acidic and alkalinee nvironments can be protected by wisely engineered N-C shells.…”

Section: Introductionmentioning

confidence: 99%

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Stable and Efficient Nitrogen‐Containing Carbon‐Based Electrocatalysts for Reactions in Energy‐Conversion Systems

et al. 2018

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High activity and stability are crucial for the practical use of electrocatalysts in fuel cells, metal-air batteries, and water electrolysis, including the oxygen reduction reaction, hydrogen evolution reaction, oxygen evolution reaction, and oxidation reactions of formic acid and alcohols. Electrocatalysts based on nitrogen-containing carbon (N-C) materials show promise in catalyzing these reactions; however, there is no systematic review of strategies for the engineering of active and stable N-C-based electrocatalysts. Herein, a comprehensive comparison of recently reported N-C-based electrocatalysts regarding both electrocatalytic activity and long-term stability is presented. In the first part of this review, the relationships between the electrocatalytic reactions and selection of the element to modify the N-C-based materials are discussed. Afterwards, synthesis methods for N-C-based electrocatalysts are summarized, and strategies for the synthesis of highly stable N-C-based electrocatalysts are presented. Multiple tables containing data on crucial parameters for both electrocatalytic activity and stability are displayed in this review. Finally, constructing M-N moieties is proposed as the most promising engineering strategy for stable N-C-based electrocatalysts.

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Section: Heterojunction Strategies For the Hermentioning

confidence: 99%

Section: Heterojunction Strategies For the Hermentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Stable and Efficient Nitrogen‐Containing Carbon‐Based Electrocatalysts for Reactions in Energy‐Conversion Systems

et al. 2018

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“…This bi-metallic catalyst was prepared in relationt oo ur previous finding of improved activity and stability by integration of as econd metal. [26] The most active catalysti no ur study shows for 10 mA cm À2 ad ifference of 150 mV versusPt/C as the reference catalyst.…”

mentioning

confidence: 93%

Exploring Active Sites in Multi‐Heteroatom‐Doped Co‐Based Catalysts for Hydrogen Evolution Reactions

Shahraei

Martinaiou

Creutz

et al. 2018

Chemistry A European J

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Today, metal-N- as well as metal-S-doped carbon materials are known to catalyze the hydrogen evolution reaction (HER). However, especially N- and S-co-doped catalysts reach highest activity, but it remains unclear if the activity is related to MN or MS (M=metal) sites. In this work we apply a simple method for multi-heteroatom doping and investigate the effect of cobalt content on the HER in acidic medium. The CoN and CoS sites were evidenced on the basis of structural characterization by Raman, X-ray induced photoelectron spectroscopy, and TEM. The presence of sulfur enables the formation of a larger number of CoN sites. Structure-performance relationship proves that the HER activity is dominated by CoN rather than CoS sites. The most active catalysts also exhibit an excellent stability under galvanostatic conditions making them of interest for electrolyser application.

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Ultrafine Co Nanoparticles Encapsulated in Carbon‐Nanotubes‐Grafted Graphene Sheets as Advanced Electrocatalysts for the Hydrogen Evolution Reaction

et al. 2018

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The rational design of an efficient and inexpensive electrocatalyst based on earth-abundant 3d transition metals (TMs) for the hydrogen evolution reaction still remains a significant challenge in the renewable energy area. Herein, a novel and effective approach is developed for synthesizing ultrafine Co nanoparticles encapsulated in nitrogen-doped carbon nanotubes (N-CNTs) grafted onto both sides of reduced graphene oxide (rGO) (Co@N-CNTs@rGO) by direct annealing of GO-wrapped core-shell bimetallic zeolite imidazolate frameworks. Benefiting from the uniform distribution of Co nanoparticles, the in-situ-formed highly graphitic N-CNTs@rGO, the large surface area, and the abundant porosity, the as-fabricated Co@N-CNTs@rGO composites exhibit excellent electrocatalytic hydrogen evolution reaction (HER) activity. As demonstrated in electrochemical measurements, the composites can achieve 10 mA cm at low overpotential with only 108 and 87 mV in 1 m KOH and 0.5 m H SO , respectively, much better than most of the reported Co-based electrocatalysts over a wide pH range. More importantly, the synthetic strategy is versatile and can be extended to prepare other binary or even ternary TMs@N-CNTs@rGO (e.g., Co-Fe@N-CNTs@rGO and Co-Ni-Cu@N-CNTs@rGO). The strategy developed here may open a new avenue toward the development of nonprecious high-performance HER catalysts.

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Elucidating the Origin of Hydrogen Evolution Reaction Activity in Mono- and Bimetallic Metal- and Nitrogen-Doped Carbon Catalysts (Me–N–C)

Cited by 36 publications

References 53 publications

Stable and Efficient Nitrogen‐Containing Carbon‐Based Electrocatalysts for Reactions in Energy‐Conversion Systems

Stable and Efficient Nitrogen‐Containing Carbon‐Based Electrocatalysts for Reactions in Energy‐Conversion Systems

Exploring Active Sites in Multi‐Heteroatom‐Doped Co‐Based Catalysts for Hydrogen Evolution Reactions

Ultrafine Co Nanoparticles Encapsulated in Carbon‐Nanotubes‐Grafted Graphene Sheets as Advanced Electrocatalysts for the Hydrogen Evolution Reaction

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