New Generation of Compositional Aquivion®-Type Membranes with Nanodiamonds for Hydrogen Fuel Cells: Design and Performance

Compositional proton-conducting membranes based on perfluorinated Aquivion®-type copolymers modified by detonation nanodiamonds (DND) with positively charged surfaces were prepared to improve the performance of hydrogen fuel cells. Small-angle neutron scattering (SANS) experiments demonstrated the f...

Full description

Saved in:
Bibliographic Details
Published in:Membranes (Basel) 2022-08, Vol.12 (9), p.827
Main Authors: Primachenko, Oleg N., Kulvelis, Yuri V., Odinokov, Alexei S., Glebova, Nadezhda V., Krasnova, Anna O., Antokolskiy, Lev A., Nechitailov, Andrey A., Shvidchenko, Alexander V., Gofman, Iosif V., Marinenko, Elena A., Yevlampieva, Natalia P., Lebedev, Vasily T., Kuklin, Alexander I.
Format: Article
Language:English
Subjects:
Acids
Additives
Alternative energy sources
Aquivion
Copolymers
Detonation
Diamonds
Electrical measurement
Fine structure
Fuel cell industry
Fuel cells
Fuel technology
Heat resistance
High temperature
Hydrogen
Hydrogen as fuel
Hydrogen fuels
ion-conducting
Membranes
membrane–electrode assembly
nanodiamonds
Nanostructure
Neutron scattering
Performance enhancement
Polymers
Potentiometric analysis
proton exchange membrane
Protons
Renewable resources
Scanning electron microscopy
small-angle neutron scattering
Thermogravimetric analysis
Ultrastructure
Water-power
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Compositional proton-conducting membranes based on perfluorinated Aquivion®-type copolymers modified by detonation nanodiamonds (DND) with positively charged surfaces were prepared to improve the performance of hydrogen fuel cells. Small-angle neutron scattering (SANS) experiments demonstrated the fine structure in such membranes filled with DND (0–5 wt.%), where the conducting channels typical for Aquivion® membranes are mostly preserved while DND particles (4–5 nm in size) decorated the polymer domains on a submicron scale, according to scanning electron microscopy (SEM) data. With the increase in DND content (0, 0.5, and 2.6 wt.%) the thermogravimetric analysis, potentiometry, potentiodynamic, and potentiotatic curves showed a stabilizing effect of the DNDs on the operational characteristics of the membranes. Membrane–electrode assemblies (MEA), working in the O2/H2 system with the membranes of different compositions, demonstrated improved functional properties of the modified membranes, such as larger operational stability, lower proton resistance, and higher current densities at elevated temperatures in the extended temperature range (22–120 °C) compared to pure membranes without additives.
ISSN:2077-0375
2077-0375
DOI:10.3390/membranes12090827