Electrocatalysts for oxygen reduction reaction based on electrospun polyacrylonitrile, styrene–acrylonitrile copolymer and carbon nanotube composite fibres

Mooste, Marek; Kisand, Vambola; Vassiljeva, Viktoria; Merisalu, Maido; Kook, Mati; Treshchalov, Alexey; Kisand, Vambola; Uibu, Mai; Krumme, Andres; Sammelselg, Väinö; Tammeveski, Kaido

doi:10.1007/s10853-019-03725-z

Cited by 32 publications

(45 citation statements)

References 74 publications

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“…At a higher pyrolysis temperature (1000 °C), the relative amount of pyrrolic‐N (N3) remained similar, but that of pyridinic‐N decreased. A similar observation for lower pyridinic‐N content at higher pyrolysis temperature was made in our previous study using PAN, SAN and MWCNT composites . In addition, in this work, the graphitic‐N (N4) content was slightly higher for catalysts pyrolysed at 1000 °C.…”

Section: Resultssupporting

confidence: 90%

“…After 1000 cycles, the E onset remained almost unchanged for Co‐containing materials and slightly shifted to a more negative value for Fe‐based catalysts. The plateaux current decreased less than 10 % in the case of all catalyst materials, which is rather similar to other electrospun CNF‐based ORR catalysts from our previous studies …”

Section: Resultssupporting

confidence: 87%

“…A very similar formation of 3D network and segmentation during pyrolysis has been observed for electrospun CNF catalysts by Liu et al . for Co and Fe phthalocyanine modified PAN fibres and in our previous study of non‐stabilised PAN, styrene‐acrylonitrile copolymer (SAN) and multi‐walled carbon nanotube (MWCNT) composite materials …”

Section: Resultsmentioning

confidence: 97%

“…A very similar formation of 3D network and segmentation during pyrolysis has been observed for electrospun CNF catalysts by Liu et al for Co and Fe phthalocyanine modified PAN fibres [39] and in our previous study of non-stabilised PAN, styrene-acrylonitrile copolymer (SAN) and multi-walled carbon nanotube (MWCNT) composite materials. [40] Owing to the monotonic increase in backscattered electron (BSE) yield with the atomic number the BSE images show pronounced atomic number (compositional) contrast, which allows differentiating areas with a high atomic number (brighter) and a low (darker) atomic number. Thus BSE images (Figures 2 and S2 for Fe-and Co-based materials, respectively) were used to observe the size and distribution of eventual metallic nanoparticles inside the carbon nanofibres.…”

Section: Physical Characterisation Of the Catalyst Materialsmentioning

confidence: 99%

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Electrospun Polyacrylonitrile‐Derived Co or Fe Containing Nanofibre Catalysts for Oxygen Reduction Reaction at the Alkaline Membrane Fuel Cell Cathode

et al. 2020

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Electrospun polyacrylonitrile (PAN) based carbon nanofibres (CNF) are employed as cathode catalysts in anion-exchange membrane fuel cell (AEMFC) for the first time. The catalysts are prepared via pyrolysis of Co or Fe salt-containing PAN fibre with and without the ionic liquid (IL) additive. The catalyst material preparation is optimised by assessing the oxygen reduction reaction (ORR) activity of different transition metal and nitrogen-doped CNFs in 0.1 M KOH by rotating disc electrode method followed by testing in real AEMFC configuration. The best performance in the AEMFC is observed in case of Fe and IL containing PAN fibre that was pyrolysed at 1000°C and additionally treated in an acid solution (Fe/IL-PAN-A1000). In the AEMFC, the Fe/IL-PAN-A1000 catalyst showed the maximum power density (P max) of 289 mW cm À 2 , which is 82 % of the P max obtained with commercial Pt/C cathode catalyst (352 mW cm À 2).

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Section: Resultssupporting

confidence: 90%

Section: Resultssupporting

confidence: 87%

Section: Resultsmentioning

confidence: 97%

Section: Physical Characterisation Of the Catalyst Materialsmentioning

confidence: 99%

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Electrospun Polyacrylonitrile‐Derived Co or Fe Containing Nanofibre Catalysts for Oxygen Reduction Reaction at the Alkaline Membrane Fuel Cell Cathode

et al. 2020

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“…Polyacrylonitrile (PAN), styrene‐acrylonitrile copolymer (SAN) and multi‐walled carbon nanotubes (MWCNTs) electrospun‐composite fibers (PAN/SAN/CNT) were pyrolyzed (800–1200 °C) in N 2 atmosphere to fabricated and used as an ORR catalyst in alkaline media, in which the most active catalyst towards the ORR (the onset and halfwave potential of −0.13 V and −0.29 V vs SCE in 0.1 M KOH, respectively).…”

Section: Organic Molecules (Phthalocyanines and Related)‐cnt Catalystmentioning

confidence: 99%

Carbon Nanotube‐Based Non‐Precious Metal Electrode Catalysts for Fuel Cells, Water Splitting and Zinc‐Air Batteries

et al. 2019

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The design and creation of a sustainable green source of energy with a high performance is highly important. There are many approaches for this goal, and one of promising alternative energy technologies should be batteries and fuel cells. Precious metals, such as Pt and Ir, have been used as catalyst materials for fuel cells for cars and stationary power generation, water splitting, etc.; however, such metals are expensive and not earth-abundant elements. The replacement of such precious metal-based electrocatalysts with low-cost materials is crucial for the next generation sustainable energy society. This minireview focuses on nanocarbons, especially carbon nanotubes, for use in the preparation of non-precious metal catalysts for fuel cells, oxygen reduction, oxygen evolution, hydrogen evolution, water splitting and Zn-air battery with a high performance.[a] Prof.

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Polypyrrole and Polythiophene Modified Carbon Nanotube‐Based Cathode Catalysts for Anion Exchange Membrane Fuel Cell

et al. 2022

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The development of non-precious metal cathode catalysts for anion exchange membrane fuel cells (AEMFC) is beneficial for achieving a more affordable and sustainable H 2 economy. Herein, we propose a polypyrrole, polythiophene, and multiwalled carbon nanotube-based composite material (PPy/PTh/ MWCNT) for the electrocatalysis of oxygen reduction reaction (ORR) at the AEMFC cathode. The PPy/PTh/MWCNT catalyst has a tubular micro-mesoporous structure with high specific surface area. The elemental composition of the catalyst's surface was studied by X-ray photoelectron spectroscopy. In 0.1 M KOH solution, the ORR half-wave potential is À 0.16 V (SCE) and the electron transfer number is 4. In a single-cell AEMFC, the PPy/ PTh/MWCNT catalyst exhibited a maximum power density of 284 mW cm À 2 , which is 86 % of the value obtained using commercial Pt/C cathode catalyst under the same testing conditions.

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Electrocatalysts for oxygen reduction reaction based on electrospun polyacrylonitrile, styrene–acrylonitrile copolymer and carbon nanotube composite fibres

Cited by 32 publications

References 74 publications

Electrospun Polyacrylonitrile‐Derived Co or Fe Containing Nanofibre Catalysts for Oxygen Reduction Reaction at the Alkaline Membrane Fuel Cell Cathode

Electrospun Polyacrylonitrile‐Derived Co or Fe Containing Nanofibre Catalysts for Oxygen Reduction Reaction at the Alkaline Membrane Fuel Cell Cathode

Carbon Nanotube‐Based Non‐Precious Metal Electrode Catalysts for Fuel Cells, Water Splitting and Zinc‐Air Batteries

Polypyrrole and Polythiophene Modified Carbon Nanotube‐Based Cathode Catalysts for Anion Exchange Membrane Fuel Cell

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