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Article

New Carbon Nanofiber Composite Materials Containing Lanthanides and Transition Metals Based on Electrospun Polyacrylonitrile for High Temperature Polymer Electrolyte Membrane Fuel Cell Cathodes

1
A. N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences, Vavilova St. 28, 119991 Moscow, Russia
2
A. V. Shubnikov Institute of Crystallography of Federal Scientific Research Centre “Crystallography and Photonics” of Russian Academy of Sciences, Leninsky Av. 59, 119333 Moscow, Russia
3
A. N. Frumkin Institute of Physical Chemistry and Electrochemistry of Russian Academy of Sciences, Leninsky Av. 31, bld. 4., 119071 Moscow, Russia
*
Author to whom correspondence should be addressed.
Polymers 2020, 12(6), 1340; https://doi.org/10.3390/polym12061340
Received: 8 May 2020 / Revised: 2 June 2020 / Accepted: 11 June 2020 / Published: 13 June 2020
(This article belongs to the Special Issue Polymers for Energy, Electronics and Sensing)
Electrospinning of polyacrylonitrile/DMF dopes containing salts of nickel, cobalt, zirconium, cerium, gadolinium, and samarium, makes it possible to obtain precursor nanofiber mats which can be subsequently converted into carbon nanofiber (CNF) composites by pyrolysis at 1000–1200 °C. Inorganic additives were found to be uniformly distributed in CNFs. Metal states were investigated by transmission electron microscopy and X-ray photoelectron spectroscopy (XPS). According to XPS in CNF/Zr/Ni/Gd composites pyrolyzed at 1000 °C, nickel exists as Ni0 and as Ni2+, gadolinium as Gd3+, and zirconium as Zr4+. If CNF/Zr/Ni/Gd is pyrolyzed at 1200 °C, nickel exists only as Ni0. For CNF/Sm/Co composite, samarium is in Sm3+ form when cobalt is not found on a surface. For CNF/Zr/Ni/Ce composite, cerium exists both as Ce4+ and as Ce3+. Composite CNF mats were platinized and tested as cathodes in high-temperature polymer electrolyte membrane fuel cell (HT-PEMFC). Such approach allows to introduce Pt–M and Pt–MOx into CNF, which are more durable compared to carbon black under HT-PEMFC operation. For CNF/Zr/Ni/Gd composite cathode, higher performance in the HT-PEMFC at I >1.2 A cm-2 is achieved due to elimination of mass transfer losses in gas-diffusion electrode compared to commercial Celtec®P1000. View Full-Text
Keywords: polyacrylonitrile; polymer membrane; polybenzimidazole; electrospinning; membrane-electrode assembly; carbon nanofiber; lanthanides; transition metals; XPS; HT-PEMFC polyacrylonitrile; polymer membrane; polybenzimidazole; electrospinning; membrane-electrode assembly; carbon nanofiber; lanthanides; transition metals; XPS; HT-PEMFC
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MDPI and ACS Style

Ponomarev, I.I.; Skupov, K.M.; Zhigalina, O.M.; Naumkin, A.V.; Modestov, A.D.; Basu, V.G.; Sufiyanova, A.E.; Razorenov, D.Y.; Ponomarev, I.I. New Carbon Nanofiber Composite Materials Containing Lanthanides and Transition Metals Based on Electrospun Polyacrylonitrile for High Temperature Polymer Electrolyte Membrane Fuel Cell Cathodes. Polymers 2020, 12, 1340. https://doi.org/10.3390/polym12061340

AMA Style

Ponomarev II, Skupov KM, Zhigalina OM, Naumkin AV, Modestov AD, Basu VG, Sufiyanova AE, Razorenov DY, Ponomarev II. New Carbon Nanofiber Composite Materials Containing Lanthanides and Transition Metals Based on Electrospun Polyacrylonitrile for High Temperature Polymer Electrolyte Membrane Fuel Cell Cathodes. Polymers. 2020; 12(6):1340. https://doi.org/10.3390/polym12061340

Chicago/Turabian Style

Ponomarev, Igor I.; Skupov, Kirill M.; Zhigalina, Olga M.; Naumkin, Alexander V.; Modestov, Alexander D.; Basu, Victoria G.; Sufiyanova, Alena E.; Razorenov, Dmitry Y.; Ponomarev, Ivan I. 2020. "New Carbon Nanofiber Composite Materials Containing Lanthanides and Transition Metals Based on Electrospun Polyacrylonitrile for High Temperature Polymer Electrolyte Membrane Fuel Cell Cathodes" Polymers 12, no. 6: 1340. https://doi.org/10.3390/polym12061340

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