Nitrogen and Oxygen Dual‐Doped Carbon Hydrogel Film as a Substrate‐Free Electrode for Highly Efficient Oxygen Evolution Reaction

Chen, Sheng; Duan, Jingjing; Jaroniec, Mietek; Qiao, Shi Zhang

doi:10.1002/adma.201305608

Cited by 604 publications

(429 citation statements)

References 37 publications

Supporting

Mentioning

411

Contrasting

Unclassified

Order By: Relevance

“…Among many nanostructured electrode candidates, carbon nanotubes (CNTs) are the most recognized one, due to their convenient and large‐scale synthesis, high intrinsic conductivity and environmental benignity 55. Nitrogen doping has also been interrogated to further increase the conductivity and electrocatalytic activity of CNTs, due to the comparatively higher electron negativity of nitrogen atoms than carbon 12.…”

Section: Hermentioning

confidence: 99%

“…In addition to single carbon structures, Qiao and coworkers reported the dual doping of nitrogen and oxygen on graphene‐CNT hydrogel film,55 via a layer‐by‐layer assembly of CNTs and graphene (with intrinsic oxygen impurities) through a simple filtration method, followed by annealing in ammonic for nitrogen doping (Figure 7c). The high OER activity of this hybrid catalyst was attributed to the dual active sites originating from the chemically converted CNTs and graphene.…”

Section: Oermentioning

confidence: 99%

See 1 more Smart Citation

One‐Dimensional Earth‐Abundant Nanomaterials for Water‐Splitting Electrocatalysts

2016

View full text Add to dashboard Cite

Hydrogen fuel acquisition based on electrochemical or photoelectrochemical water splitting represents one of the most promising means for the fast increase of global energy need, capable of offering a clean and sustainable energy resource with zero carbon footprints in the environment. The key to the success of this goal is the realization of robust earth‐abundant materials and cost‐effective reaction processes that can catalyze both hydrogen evolution reaction (HER) and oxygen evolution reaction (OER), with high efficiency and stability. In the past decade, one‐dimensional (1D) nanomaterials and nanostructures have been substantially investigated for their potential in serving as these electrocatalysts for reducing overpotentials and increasing catalytic activity, due to their high electrochemically active surface area, fast charge transport, efficient mass transport of reactant species, and effective release of gas produced. In this review, we summarize the recent progress in developing new 1D nanomaterials as catalysts for HER, OER, as well as bifunctional electrocatalysts for both half reactions. Different categories of earth‐abundant materials including metal‐based and metal‐free catalysts are introduced, with their representative results presented. The challenges and perspectives in this field are also discussed.

show abstract

Section: Hermentioning

confidence: 99%

Section: Oermentioning

confidence: 99%

One‐Dimensional Earth‐Abundant Nanomaterials for Water‐Splitting Electrocatalysts

2016

View full text Add to dashboard Cite

show abstract

“…Figure 5f shows the schematic representation of the four types of nitrogen configurations in carbon matrix. The incorporation of N into carbon nanofibers can not only effectively enhance the overall electrical conductivity of carbon nanofibers but also generate some defects or vacancies among carbon nanofibers, therefore, affording numerous active sites for electrocatalysis and thus expediting the reaction kinetics 41, 42, 43, 44…”

mentioning

confidence: 99%

Anchoring CoFe₂O₄ Nanoparticles on N‐Doped Carbon Nanofibers for High‐Performance Oxygen Evolution Reaction

et al. 2017

Advanced Science

207

View full text Add to dashboard Cite

The exploration of earth‐abundant and high‐efficiency electrocatalysts for the oxygen evolution reaction (OER) is of great significant for sustainable energy conversion and storage applications. Although spinel‐type binary transition metal oxides (AB2O4, A, B = metal) represent a class of promising candidates for water oxidation catalysis, their intrinsically inferior electrical conductivity exert remarkably negative impacts on their electrochemical performances. Herein, we demonstrates a feasible electrospinning approach to concurrently synthesize CoFe2O4 nanoparticles homogeneously embedded in 1D N‐doped carbon nanofibers (denoted as CoFe2O4@N‐CNFs). By integrating the catalytically active CoFe2O4 nanoparticles with the N‐doped carbon nanofibers, the as‐synthesized CoFe2O4@N‐CNF nanohybrid manifests superior OER performance with a low overpotential, a large current density, a small Tafel slope, and long‐term durability in alkaline solution, outperforming the single component counterparts (pure CoFe2O4 and N‐doped carbon nanofibers) and the commercial RuO2 catalyst. Impressively, the overpotential of CoFe2O4@N‐CNFs at the current density of 30.0 mA cm−2 negatively shifts 186 mV as compared with the commercial RuO2 catalyst and the current density of the CoFe2O4@N‐CNFs at 1.8 V is almost 3.4 times of that on RuO2 benchmark. The present work would open a new avenue for the exploration of cost‐effective and efficient OER electrocatalysts to substitute noble metals for various renewable energy conversion/storage applications.

show abstract

“…Thus far, there are only a few illustrations of nonmetallic OER electrocatalysts, for example, N(5)‐ethylflavinium,28 N‐doped graphite,18 and graphene‐CNTs hybrid 22. However, most of their activities are still inferior to IrO 2 .…”

mentioning

confidence: 99%

Paper‐Based N‐Doped Carbon Films for Enhanced Oxygen Evolution Electrocatalysis

et al. 2015

Self Cite

View full text Add to dashboard Cite

Cellulous‐fiber papers are used as 3D structural templates for the assembly of graphene and graphitic carbon nitrate (g‐C3N4) ultrathin nanosheets. The resultant materials, which possess highly active centers, rich porosity, and 3D conductive networks, can catalyze the oxygen evolution reaction with competitive activity and much better durability compared to the benchmark noble metal electrocatalysts (IrO2).

show abstract

Nitrogen and Oxygen Dual‐Doped Carbon Hydrogel Film as a Substrate‐Free Electrode for Highly Efficient Oxygen Evolution Reaction

Cited by 604 publications

References 37 publications

One‐Dimensional Earth‐Abundant Nanomaterials for Water‐Splitting Electrocatalysts

One‐Dimensional Earth‐Abundant Nanomaterials for Water‐Splitting Electrocatalysts

Anchoring CoFe₂O₄ Nanoparticles on N‐Doped Carbon Nanofibers for High‐Performance Oxygen Evolution Reaction

Paper‐Based N‐Doped Carbon Films for Enhanced Oxygen Evolution Electrocatalysis

Contact Info

Product

Resources

About

Nitrogen and Oxygen Dual‐Doped Carbon Hydrogel Film as a Substrate‐Free Electrode for Highly Efficient Oxygen Evolution Reaction

Cited by 604 publications

References 37 publications

One‐Dimensional Earth‐Abundant Nanomaterials for Water‐Splitting Electrocatalysts

One‐Dimensional Earth‐Abundant Nanomaterials for Water‐Splitting Electrocatalysts

Anchoring CoFe2O4 Nanoparticles on N‐Doped Carbon Nanofibers for High‐Performance Oxygen Evolution Reaction

Paper‐Based N‐Doped Carbon Films for Enhanced Oxygen Evolution Electrocatalysis

Contact Info

Product

Resources

About

Anchoring CoFe₂O₄ Nanoparticles on N‐Doped Carbon Nanofibers for High‐Performance Oxygen Evolution Reaction