Carbon Nanofiber Paper Electrodes Based on Heterocyclic Polymers for High Temperature Polymer Electrolyte Membrane Fuel Cell

2017 ◽  
Vol 375 (1) ◽  
pp. 1600188 ◽  
Author(s):  
Kirill M. Skupov ◽  
Igor I. Ponomarev ◽  
Dmitry Y. Razorenov ◽  
Viktoria G. Zhigalina ◽  
Olga M. Zhigalina ◽  
...  
Keyword(s):  
High Temperature ◽  
Fuel Cell ◽  
Polymer Electrolyte ◽  
Carbon Nanofiber ◽  
Polymer Electrolyte Membrane ◽  
Heterocyclic Polymers ◽  
Electrolyte Membrane

scholarly journals 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 ◽  
Vol 12 (6) ◽  
pp. 1340 ◽  
Author(s):  
Igor I. Ponomarev ◽  
Kirill M. Skupov ◽  
Olga M. Zhigalina ◽  
Alexander V. Naumkin ◽  
Alexander D. Modestov ◽  
...  
Keyword(s):  
High Temperature ◽  
Fuel Cell ◽  
Polymer Electrolyte ◽  
Photoelectron Spectroscopy ◽  
Carbon Nanofiber ◽  
Polymer Electrolyte Membrane ◽  
Composite Cathode ◽  
Gas Diffusion ◽  
Electrolyte Membrane ◽  
Nanofiber Mats

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.

High temperature polymer electrolyte membrane fuel cell degradation provoked by ammonia as ambient air contaminant

2021 ◽  
Vol 502 ◽  
pp. 229993
Author(s):  
Dana Schonvogel ◽  
Julian Büsselmann ◽  
Henrike Schmies ◽  
Hendrik Langnickel ◽  
Peter Wagner ◽  
...  
Keyword(s):  
High Temperature ◽  
Fuel Cell ◽  
Polymer Electrolyte ◽  
Polymer Electrolyte Membrane ◽  
Ambient Air ◽  
Electrolyte Membrane ◽  
Air Contaminant

scholarly journals Investigation of Corrosion Methods for Bipolar Plates for High Temperature Polymer Electrolyte Membrane Fuel Cell Application

Energies ◽  
2020 ◽  
Vol 13 (1) ◽  
pp. 235
Author(s):  
Nadine Pilinski ◽  
Claudia Käding ◽  
Anastasia Dushina ◽  
Thorsten Hickmann ◽  
Alexander Dyck ◽  
...  
Keyword(s):  
High Temperature ◽  
Fuel Cell ◽  
Polymer Electrolyte ◽  
Corrosion Behaviour ◽  
Polymer Electrolyte Membrane ◽  
Carbon Surface ◽  
Potential Range ◽  
Bipolar Plates ◽  
Electrolyte Membrane ◽  
Fuel Cell Application

In this work, different methods and electrochemical set-ups were investigated in order to study the corrosion behaviour of bipolar plates (BPP) for high temperature (HT) polymer electrolyte membrane fuel cell application. Using confocal and scanning electron microscopy, it was shown that chemical and electrochemical aging significantly increases surface roughness as well as morphology changes, confirming material degradation. Identical electrochemical corrosion behaviour was observed for both set-ups with typical quinone/hydroquinone peaks in the potential range ~0.6–0.7 V versus reversible hydrogen electrode (RHE). The appearance of the peaks and an increase of double layer capacitance can be related to the oxidation of carbon surface and, consequently, material corrosion. Simultaneously, an optimised corrosion set-up was introduced and verified regarding suitability. Both investigated set-ups and methods are useful to analyse the oxidation behaviour and corrosion resistance.

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