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1 article(s) from Kharitonova, Elena P

Novel composite Zr/PBI-O-PhT membranes for HT-PEFC applications

Mikhail S. Kondratenko,
Igor I. Ponomarev,
Marat O. Gallyamov,
Dmitry Y. Razorenov,
Yulia A. Volkova,
Elena P. Kharitonova and
Alexei R. Khokhlov

Beilstein J. Nanotechnol. 2013, 4, 481–492, doi:10.3762/bjnano.4.57

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Figure 1: Chemical structure of poly[oxy-3,3-bis(4′-benzimidazol-2″-ylphenyl)phtalide-5″(6″)-diyl] (PBI-O-PhT...

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Figure 2: Equivalent circuit with a transmission line for modelling the impedance response of the active laye...

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Figure 3: Small angle X-ray scattering results for the different types of composites and the reference membra...

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Figure 4: FT-IR spectra of a mixture of BI with Zr(acac)₄ (4:1 molar ratio, upper spectrum) and of the produc...

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Figure 5: Possible mechanism of the crosslinking process of PBI by Zr(acac)₄ and further doping with PA.

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Figure 6: Change of the relative membrane thickness in a series of five consecutive heating/cooling cycles. T...

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Figure 7: Thermal expansion coefficients of the composite membranes.

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Figure 8: Performance of fuel cells based on PBI membranes of different types. Air is used as an oxidant, T =...

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Figure 9: Oxidation current of hydrogen diffusing through the membrane for PBI-O-PhT with 0.75 wt % Zr(OAc)₄....

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Figure 10: Membrane resistances as functions of the current density for fuel cells with different PBI membrane...

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Figure 11: Distributed cathode active layer resistances as functions of current density for fuel cells with di...

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Figure 12: The double layer capacitance as a function of the current density for fuel cells with different PBI...

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Figure 13: Polarization resistance (the sum of charge-transfer and mass-transfer resistances) as a function of...

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Figure 14: 2000-hour stability test of a composite PBI-O-PhT + 0.75 wt % Zr(acac)₄ membrane and the reference ...

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Full Research Paper

Published 21 Aug 2013

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