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

Abstract

Different polyheteroarylenes, such as m‐polybenzimidazole, polyphenylene oxide, polymer of intrinsic microporosity (PIM‐1) and poly(N‐phenylene‐benzimidazole) were electrospun to obtain self‐supporting polymer nanofiber mats. The mats after heat treatment, which contains stabilization in air at 250–350 °C and pyrolysis at 900–1000 °C under vacuum, convert into carbon nanofiber paper, a material which is suitable for Pt nanoparticle deposition. The possibility of usage of the obtained carbonized nanocomposites as entire gas diffusion electrodes for high temperature polymer electrolyte membrane fuel cell is shown.

A statistical analysis on the influence of process and solution properties on centrifugally spun nanofiber morphology

“…Even any material with a carbon backbone can be used as a precursor for carbon materials, PAN is the most commonly used carbon precursor due to its high carbon yield up to 56%, flexibility for maintaining the structure, excellent mechanical and electrochemical properties [48,49]. PAN based carbon nanofibers have been used in many fields including electrodes [50–56], supercapacitors [57–63], fuel cells [64–67], sensors [68–72], solar cells [73–75], biomedical applications [76] and tissue engineering applications [77–81]. For instance, Kumar et al.…”

“…Even any material with a carbon backbone can be used as a precursor for carbon materials, PAN is the most commonly used carbon precursor due to its high carbon yield up to 56%, flexibility for maintaining the structure, excellent mechanical and electrochemical properties [48,49]. PAN based carbon nanofibers have been used in many fields including electrodes [50][51][52][53][54][55][56], supercapacitors [57][58][59][60][61][62][63], fuel cells [64][65][66][67], sensors [68][69][70][71][72], solar cells [73][74][75], biomedical applications [76] and tissue engineering applications [77][78][79][80][81]. For instance, Kumar et al [50] used carbon nanofiber from electrospun PAN precursor for anode material for lithium ion batteries which showed high initial discharge capacity of 826 mAh g À1 at 200 mA g À1 .…”

New proton-conducting polydiimidazopyridine based membrane for ht-pem fuel cell

“…Значения протонной проводимости мембран, полученных осаждением реакционных растворов ПДИП водой и выдержанных в 77%-й фосфорной кислоте, достигают 41 мСм/см при 160 °C, что в 2,4 раза превышает проводимость кардового полимера ПБИ-О-ФТ (рис. 2), исследованного ранее в МЭБ [9][10][11][12][13][14][15]…”

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

“…Earlier we have shown [ 28 , 29 , 30 , 31 , 32 , 33 , 34 , 35 , 36 , 37 ], that platinized highly macroporous CNF self-supporting mats, which were obtained by the method of electrospinning (ES) from polyacrylonitrile (PAN) polymer solution [ 38 , 39 ] with further stabilization in air, pyrolysis under vacuum [ 40 ], and platination in hexachloroplatinic acid solution, can be successfully used in HT-PEMFC as gas diffusion electrodes (GDEs), both on cathode and anode sides. Thus, polybenzimidazole membrane PBI-OPht was developed in our group for this purpose [ 41 , 42 ].…”