Oxygen Evolution Reaction on Single‐Walled Carbon Nanotubes Noncovalently Functionalized with Metal Phthalocyanines

Alzate-Carvajal, Natalia; Bolivar-Pineda, Lina M.; Meza-Laguna, Víctor; Basiuk, Vladimir A.; Basiuk, Elena V.; Baranova, Elena A.

doi:10.1002/celc.201901708

Cited by 32 publications

(22 citation statements)

References 72 publications

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“…Recently, single-walled CNTs noncovalently functionalised with MPcs (FePc; MnPc; NiPc; CoPc) was reported, but even the best performing electrocatalyst (SWCNT + NiPc) in more concentrated electrolyte solution (1 M KOH) exhibited E OER of 1.6 V [70] that is comparable with the result obtained herein by pyrolysis of MPcs and CNTs indicating that pyrolysis generates more OER-active sites. Niu and co-workers prepared porous NiCoP/NSP-HPCNS catalyst that exhibited good electrocatalytic activity for OER with only 299 mV overpotential at 10 mA cm À 2 in 1 M KOH instead of 0.1 M KOH as used here.…”

Section: Nicon-cnt)supporting

confidence: 79%

Bimetal Phthalocyanine‐Modified Carbon Nanotube‐Based Bifunctional Catalysts for Zinc‐Air Batteries

et al. 2021

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A series of non-precious bifunctional electrocatalysts composed of first-row transition metal phthalocyanine (MPc, M = Mn, Ni, Co) modified multi-walled carbon nanotubes (CNTs) was prepared and examined for the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) in alkaline media. The use of MPc in carbon matrix is attractive due to the formation of M-N x sites, which are responsible for ORR electrocatalysis and transition metal oxides that are OER-active. Physical characterisation of the prepared catalysts was carried out by scanning electron microscopy/energy dispersive X-ray spectroscopy, scanning transmission electron microscopy, N 2 physisorption analysis, X-ray diffraction and X-ray photoelectron spectroscopy. The highest ORR activity among bimetallic catalysts was shown by a MnCoN-CNT catalyst with half-wave potential of 0.84 V. The electrochemical results of the prepared bimetallic catalysts revealed superior OER activity of NiCoN-CNT with E OER of 1.61 V at 10 mA cm À 2 and also good ORR activity (E 1/ 2 = 0.83 V). Furthermore, NiCoN-CNT exhibited excellent stability for both, ORR and OER, with only 5 mV change in half-wave potential and only 14 mV loss in E OER , respectively. For checking bifunctionality, the NiCoN-CNT catalyst was used as an air electrode and tested for zinc-air battery (ZAB). Good ZAB performance was obtained, with open circuit voltage (OCV) of 1.338 V.

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Section: Nicon-cnt)supporting

confidence: 79%

Bimetal Phthalocyanine‐Modified Carbon Nanotube‐Based Bifunctional Catalysts for Zinc‐Air Batteries

et al. 2021

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“…But even the best E OER result obtained with SWCNT + NiPc (1.6 V, obtained in 1 M KOH)68 is 20 mV more than the E OER of the as-synthesized FeNiN-MWCNT studied in 0.1 M KOH herein. Thus, since FeNiN-MWCNT and FeCoN-MWCNT exhibited good OER activity among the prepared electrocatalysts, it suggests that Fe and Ni or Co metal-N 4 macrocycles together could strongly enhance the OER kinetics.…”

mentioning

confidence: 57%

“…67 Also, very recently, better OER activity on single-walled carbon nanotubes (SWCNTs) noncovalently functionalized with single MPc (e.g., NiPc, MnPc, FePc, CoPc) in terms of achieving 10 mA cm −2 was obtained in 1 M KOH than 0.1 M KOH. 68 It was found that FeNiN-MWCNT retained 82% (Figure 5b) and FeCoN-MWCNT retained 81% (Figure S9b) of the initial OER current densities after 10 000 s. As can be seen, both electrocatalysts, FeCoN-MWCNT and FeNiN-MWCNT, are very electrochemically active and stable for the ORR and OER, respectively.…”

Section: Characterization Of the Catalystsmentioning

confidence: 77%

Bifunctional Oxygen Electrocatalysis on Mixed Metal Phthalocyanine-Modified Carbon Nanotubes Prepared via Pyrolysis

Kumar

Kisand

Kozlova

et al. 2021

ACS Appl. Mater. Interfaces

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Non-precious-metal catalysts are promising alternatives for Pt-based cathode materials in low-temperature fuel cells, which is of great environmental importance. Here, we have investigated the bifunctional electrocatalytic activity toward the oxygen reduction reaction (ORR) and the oxygen evolution reaction (OER) of mixed metal (FeNi; FeMn; FeCo) phthalocyanine-modified multiwalled carbon nanotubes (MWCNTs) prepared by a simple pyrolysis method. Among the bimetallic catalysts containing nitrogen derived from corresponding metal phthalocyanines, we report the excellent ORR activity of FeCoN-MWCNT and FeMnN-MWCNT catalysts with the ORR onset potential of 0.93 V and FeNiN-MWCNT catalyst for the OER having E OER = 1.58 V at 10 mA cm –2 . The surface morphology, structure, and elemental composition of the prepared catalysts were examined with scanning electron microscopy, X-ray diffraction, and X-ray photoelectron spectroscopy. The FeCoN-MWCNT and FeMnN-MWCNT catalysts were prepared as cathodes and tested in anion-exchange membrane fuel cells (AEMFCs). Both catalysts displayed remarkable AEMFC performance with a peak power density as high as 692 mW cm –2 for FeCoN-MWCNT.

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“…Graphene has two forms of interactions that influence its compatibility with other nanomaterials or stimulants between electron-rich and electron-poor regions [30]. This is often seen on both face-to-face arrangement and edge-to-face arrangement [31]. Also present in biologically relevant molecules such as DNA, RNA, and porphyrins through electron interactions.…”

Section: Methods Of Synthesis Of Carbon Nanocompositesmentioning

confidence: 99%

Sustainable Development of Carbon Nanocomposites: Synthesis and Classification for Environmental Remediation

Veeman¹,

Shree²,

Sureshkumar³

et al. 2021

Journal of Nanomaterials

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Composite materials with carbon nanotube and graphene attachments have been regarded as promising prospects. Carbon nanocomposites have gained considerable interest in different fields including biomedical applications due to its exceptional structural dimensions and outstanding mechanical, electrical, thermal, optical, and chemical characteristics. The significant advances made in carbon nanocomposite over past years along with the discovery of new nanocomposite processing technologies to improvise the functional impact of nanotube and graphene composites by providing proper methods of synthesis and improving the production of diverse composite based on carbon nanomaterials are discussed. Carbon nanocomposites are applied in various fields such as aviation, batteries, chemical industry, fuel cell, optics, power generation, space, solar hydrogen, sensors, and thermoelectric devices. The recent design, fabrication, characteristics, and applications of carbon nanocomposites such as active carbon, carbon black, graphene, nanodiamonds, and carbon nanotubes are explained in detail in this research. It is found that unlike traditional fiber composites, Van der Waals force interfacial compounds have an important effect on the mechanical performance of carbon nanomaterial-based composites.

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Oxygen Evolution Reaction on Single‐Walled Carbon Nanotubes Noncovalently Functionalized with Metal Phthalocyanines

Cited by 32 publications

References 72 publications

Bimetal Phthalocyanine‐Modified Carbon Nanotube‐Based Bifunctional Catalysts for Zinc‐Air Batteries

Bimetal Phthalocyanine‐Modified Carbon Nanotube‐Based Bifunctional Catalysts for Zinc‐Air Batteries

Bifunctional Oxygen Electrocatalysis on Mixed Metal Phthalocyanine-Modified Carbon Nanotubes Prepared via Pyrolysis

Sustainable Development of Carbon Nanocomposites: Synthesis and Classification for Environmental Remediation

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