Synthesis and characterization of hybrid composite membranes and their properties: Single cell performances based on carbon black catalyst/proton-conducting hybrid composite membrane for H2/O2 fuel cells

One-pot facile simultaneous in situ synthesis of conductive Ag–polyaniline composites using Keggin and Preyssler-type phosphotungstates

“…[22][23][24] CP-NPs composites are synthesized through: electrochemical deposition, 9,15,[24][25][26] solution or drop casting, 27,28 layerby-layer self-assembly, 29,30 and entrapment into sol-gel matrices. 16,[31][32][33][34] Most of these conventional methods and materials have limitations and disadvantages including: process complexity, toxicity, high cost, environmental problems, timeconsuming, high energy loss, low efficiency and low doping. 6,24 Hence, producing modern CP-NPs composites with favorable properties and their corresponding synthesized methods have faced the following challenges.…”

Performance of H2-fed fuel cell with chitosan/silicotungstic acid membrane as proton conductor

“…The power density peak was reached by using the membrane functionalized for 24 h; the maximum was showed in the ohmic region of the polarization curve and was 268 mW cm −2 @ i = 880 mA cm −2 and E cell = 306 mV. This result is remarkable since it is better than other results reported in literature for systems employing STA-based membranes [31]. It is noteworthy to mention that, despite the high current densities, the polarization curve still had ohmic behaviour without any signal of mass transfer-controlled kinetics or cell flooding, which was reported for other H 2 -O 2 fuel cell employing heteropolyacid-based solid electrolyte [11].…”