Core-shell carbon-ceramic fibres by electrospinning and atomic layer deposition (ALD)

Pirjo Heikkilä, Antti T. Pasanen, Matti Putkonen, Mika Vähä-Nissi

Research output: Contribution to conferenceConference AbstractScientific

Abstract

Electrospinning can be used to prepare submicron polymeric or composite fibres. Such fibres can be as precursors and subsequently pyrolysed into carbon fibres. The small fibre diameter, small pore size, and high surface area of the nanofibre web are properties that are advantageous for various applications including catalysis. In this study we prepare corrosion resistant and electrically conductive catalyst support structures utilizing electrospinning. In this presentation we present first results of the study carried out within project Catapult (novel CATAlyst structures employing Pt at Ultra Low and zero loadings for auTomotive MEAs; Supported by EU FCH-JU; Grant agreement no 325268). Our approach to produce core-shell carbon-ceramic catalyst supports include preparation of electrospun precursor fibres, stabilization and carbonization of precursor fibres into carbon, and atomic layer deposition (ALD) coating method to produce semi-conducting oxide layer onto carbon fibres. Electrospun fibre sheets are prepared from polyacrylonitrile (PAN) and mixture of PAN and carbon nanotubes (CNT) with lab scale electrospinning setup equipped with rotating drum collector in dry atmosphere. Stabilization and carbonization of web samples are carried out using tubular furnace suitable for roll-to-roll operation, and carbon samples are coated with niobium doped titanium oxide in ALD batch reactor. Conductivities of carbon fibres and ALD coated carbon fibres were around 5-20 S/cm.
Original languageEnglish
Publication statusPublished - 2014
EventE-MRS 2014 Fall Meeting - Warsaw, Poland
Duration: 15 Sep 201418 Sep 2014

Conference

ConferenceE-MRS 2014 Fall Meeting
CountryPoland
CityWarsaw
Period15/09/1418/09/14

Fingerprint

Ceramic fibers
Atomic layer deposition
Electrospinning
Carbon fibers
Fibers
Carbonization
Catalyst supports
Carbon
Stabilization
Niobium
Carbon Nanotubes
Batch reactors
Nanofibers
Oxides
Catalysis
Pore size
Furnaces
Corrosion
Coatings
Catalysts

Keywords

  • carbon fibres
  • electrospinning
  • fuel cell
  • catalys
  • atomic layer deposition

Cite this

Heikkilä, P., Pasanen, A. T., Putkonen, M., & Vähä-Nissi, M. (2014). Core-shell carbon-ceramic fibres by electrospinning and atomic layer deposition (ALD). Abstract from E-MRS 2014 Fall Meeting, Warsaw, Poland.
Heikkilä, Pirjo ; Pasanen, Antti T. ; Putkonen, Matti ; Vähä-Nissi, Mika. / Core-shell carbon-ceramic fibres by electrospinning and atomic layer deposition (ALD). Abstract from E-MRS 2014 Fall Meeting, Warsaw, Poland.
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Heikkilä, P, Pasanen, AT, Putkonen, M & Vähä-Nissi, M 2014, 'Core-shell carbon-ceramic fibres by electrospinning and atomic layer deposition (ALD)' E-MRS 2014 Fall Meeting, Warsaw, Poland, 15/09/14 - 18/09/14, .

Core-shell carbon-ceramic fibres by electrospinning and atomic layer deposition (ALD). / Heikkilä, Pirjo; Pasanen, Antti T.; Putkonen, Matti; Vähä-Nissi, Mika.

2014. Abstract from E-MRS 2014 Fall Meeting, Warsaw, Poland.

Research output: Contribution to conferenceConference AbstractScientific

TY - CONF

T1 - Core-shell carbon-ceramic fibres by electrospinning and atomic layer deposition (ALD)

AU - Heikkilä, Pirjo

AU - Pasanen, Antti T.

AU - Putkonen, Matti

AU - Vähä-Nissi, Mika

N1 - HUO: Abstract of a lecture Project code: 79749

PY - 2014

Y1 - 2014

N2 - Electrospinning can be used to prepare submicron polymeric or composite fibres. Such fibres can be as precursors and subsequently pyrolysed into carbon fibres. The small fibre diameter, small pore size, and high surface area of the nanofibre web are properties that are advantageous for various applications including catalysis. In this study we prepare corrosion resistant and electrically conductive catalyst support structures utilizing electrospinning. In this presentation we present first results of the study carried out within project Catapult (novel CATAlyst structures employing Pt at Ultra Low and zero loadings for auTomotive MEAs; Supported by EU FCH-JU; Grant agreement no 325268). Our approach to produce core-shell carbon-ceramic catalyst supports include preparation of electrospun precursor fibres, stabilization and carbonization of precursor fibres into carbon, and atomic layer deposition (ALD) coating method to produce semi-conducting oxide layer onto carbon fibres. Electrospun fibre sheets are prepared from polyacrylonitrile (PAN) and mixture of PAN and carbon nanotubes (CNT) with lab scale electrospinning setup equipped with rotating drum collector in dry atmosphere. Stabilization and carbonization of web samples are carried out using tubular furnace suitable for roll-to-roll operation, and carbon samples are coated with niobium doped titanium oxide in ALD batch reactor. Conductivities of carbon fibres and ALD coated carbon fibres were around 5-20 S/cm.

AB - Electrospinning can be used to prepare submicron polymeric or composite fibres. Such fibres can be as precursors and subsequently pyrolysed into carbon fibres. The small fibre diameter, small pore size, and high surface area of the nanofibre web are properties that are advantageous for various applications including catalysis. In this study we prepare corrosion resistant and electrically conductive catalyst support structures utilizing electrospinning. In this presentation we present first results of the study carried out within project Catapult (novel CATAlyst structures employing Pt at Ultra Low and zero loadings for auTomotive MEAs; Supported by EU FCH-JU; Grant agreement no 325268). Our approach to produce core-shell carbon-ceramic catalyst supports include preparation of electrospun precursor fibres, stabilization and carbonization of precursor fibres into carbon, and atomic layer deposition (ALD) coating method to produce semi-conducting oxide layer onto carbon fibres. Electrospun fibre sheets are prepared from polyacrylonitrile (PAN) and mixture of PAN and carbon nanotubes (CNT) with lab scale electrospinning setup equipped with rotating drum collector in dry atmosphere. Stabilization and carbonization of web samples are carried out using tubular furnace suitable for roll-to-roll operation, and carbon samples are coated with niobium doped titanium oxide in ALD batch reactor. Conductivities of carbon fibres and ALD coated carbon fibres were around 5-20 S/cm.

KW - carbon fibres

KW - electrospinning

KW - fuel cell

KW - catalys

KW - atomic layer deposition

M3 - Conference Abstract

ER -

Heikkilä P, Pasanen AT, Putkonen M, Vähä-Nissi M. Core-shell carbon-ceramic fibres by electrospinning and atomic layer deposition (ALD). 2014. Abstract from E-MRS 2014 Fall Meeting, Warsaw, Poland.