Cobalt‐Bridged Ionic Liquid Polymer on a Carbon Nanotube for Enhanced Oxygen Evolution Reaction Activity

Ding, Yuxiao; Klyushin, Alexander Yu.; Huang, Xing; Jones, Travis E.; Teschner, Detre; Girgsdies, Frank; Ródenas, Tania; Schlögl, Robert; Heumann, Saskia

doi:10.1002/anie.201711688

Cited by 68 publications

(37 citation statements)

References 41 publications

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“…The composites were tested as excellent catalysts for the oxygen evolution reaction (OER) because of the variations in the electronic structure of Co by coordinating with PIL, as well as the excellent conductivity contributed by CNTs. 105 The synergistic effect between PIL and CNTs was clearly illustrated in a report by using redox-active catechol-bearing PIL-CNT composites as high-performance lithium-ion battery cathodes. The composite delivered a high reversible capacity of 247 mA h g À1 at 0.2C with a capacity of 134 mA h g À1 at 60C and retained 86% of its initial capacity during the prolonged 5000 cycling tests in comparison to a neutral polymer PAmcat in control experiments (Fig.…”

Section: Pil-carbon Compositesmentioning

confidence: 97%

Poly(ionic liquid) composites

et al. 2020

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Section: Pil-carbon Compositesmentioning

confidence: 97%

Poly(ionic liquid) composites

et al. 2020

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“…Wurster et al found that the OER activity was nonlinearly dependent on the coordination positions of Fe and Co in a supramolecular structure. Ding et al developed a sandwich structure where CNT was coated with a uniform layer of polymerized ionic liquids (PIL), and Co atoms were dispersed at the interface. The resulting Co‐PIL‐CNT SACs showed much better OER catalytic activity than Co 3 O 4 /CNT and CoCO 3 despite a much lower Co content.…”

Section: Electrocatalytic Performancementioning

confidence: 99%

“…In recent years, SACs have also found significant applications in electrochemical energy conversion and storage, in particular, ORR, OER, HER, and CO 2 RR, and the results suggest that the supporting substrates such as carbon‐based materials not only provide anchoring sites for the single metal atoms, offer good electrical conductance with the graphitic skeletons, but also manipulate the charge density and electronic structure of the metal atoms because of strong interfacial interactions between the metal atoms and adjacent carbon atoms. Such attributes may be exploited for the enhancement of the electrocatalytic performance due to generation of an increasing number of active sites.…”

Section: Introductionmentioning

confidence: 99%

Carbon‐Supported Single Atom Catalysts for Electrochemical Energy Conversion and Storage

2018

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Single atoms of select transition metals supported on carbon substrates have emerged as a unique system for electrocatalysis because of maximal atom utilization (≈100%) and high efficiency for a range of reactions involved in electrochemical energy conversion and storage, such as the oxygen reduction, oxygen evolution, hydrogen evolution, and CO reduction reactions. Herein, the leading strategies for the preparation of single atom catalysts are summarized, and the electrocatalytic performance of the resulting samples for the various reactions is discussed. In general, the carbon substrate not only provides a stabilizing matrix for the metal atoms, but also impacts the electronic density of the metal atoms due to strong interfacial interactions, which may lead to the formation of additional active sites by the adjacent carbon atoms and hence enhanced electrocatalytic activity. This necessitates a detailed understanding of the material structures at the atomic level, a critical step in the construction of a relevant structural model for theoretical simulations and calculations. Finally, a perspective is included highlighting the promises and challenges for the future development of carbon-supported single atom catalysts in electrocatalysis.

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“…In addition, as a potential electrocatalyst with high activity for OER, the stability is also an important property to ensure that the catalyst can release a high activity for a long time (Ding et al, 2018). As shown in the inset curve of Figure 6B, chronoamperometry was conducted at an overpotential of 310 mV for CoP-CGP2.…”

Section: Electrochemical Testsmentioning

confidence: 99%

One-Step Synthesis of N, P-Codoped Carbon Nanosheets Encapsulated CoP Particles for Highly Efficient Oxygen Evolution Reaction

et al. 2020

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Oxygen electrocatalysis, especially oxygen evolution reaction (OER), is a central process during the actual application of rechargeable metal-air battery. It is still challenging to develop ideal electrocatalysts to substitute the commercial noble metal-based materials. In this work, we have constructed a new material, CoP nanoparticles, which are encapsulated by a biomolecule-derived N, P-codoped carbon nanosheets via a simple and facile one-step strategy. The as-prepared material releases a high electrocatalytic activity and stability for OER, with an overpotential of 310 mV to achieve 10 mA/cm 2 in 1 M KOH. Importantly, we found that the phosphoric acid can not only introduce phosphorus dopant into 2D N-doped carbon nanosheets and play a role of pore-forming agent, but also participate in the formation of active center (cobalt phosphide). Moreover, the coverage of N, P-doped carbon can prevent the CoP nanoparticles from corrosion under the harsh reaction medium to achieve high and stable activity. We believe that our strategy can offer a novel pathway to synthesize new transition metal-based catalysts for electrocatalysis or other heterogeneous catalysis.

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Cobalt‐Bridged Ionic Liquid Polymer on a Carbon Nanotube for Enhanced Oxygen Evolution Reaction Activity

Cited by 68 publications

References 41 publications

Poly(ionic liquid) composites

Poly(ionic liquid) composites

Carbon‐Supported Single Atom Catalysts for Electrochemical Energy Conversion and Storage

One-Step Synthesis of N, P-Codoped Carbon Nanosheets Encapsulated CoP Particles for Highly Efficient Oxygen Evolution Reaction

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