O2selective membranes based on a dextrin-nanosponge (NS) in a PVDF-HFP polymer matrix for Li-air cells.
A novel oxygen selective highly hydrophobic membrane is prepared by non-solvent induced phase separation in which a dextrin-based nanosponge is incorporated into a poly(vinylidene fluoride co-hexafluoropropylene) (PVDF-HFP) matrix. The membrane presents high capability to entrap moisture from air as well as good hydrophobic behaviour. The membrane was assembled in a pouch type Li-air cell, which was cycled in a galvanostatic mode at curtailed capacity, in air with 17% relative humidity (RH). Owing to the protection of the membrane, the Li-air cell was able to discharge and re-charge for approximately 145 cycles, which correspond to about 1450 h of cell operation.
Department of Applied Science and Technology (DISAT), Politecnico di Torino, C.so Duca degli Abruzzi 24, 10129 Torino, Italy. silvia.bodoardo@polito.it.
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Amici
Department of Applied Science and Technology (DISAT), Politecnico di Torino, C.so Duca degli Abruzzi 24, 10129 Torino, Italy. silvia.bodoardo@polito.it.
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Alidoost
Department of Applied Science and Technology (DISAT), Politecnico di Torino, C.so Duca degli Abruzzi 24, 10129 Torino, Italy. silvia.bodoardo@polito.it.
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Francia
Department of Applied Science and Technology (DISAT), Politecnico di Torino, C.so Duca degli Abruzzi 24, 10129 Torino, Italy. silvia.bodoardo@polito.it.
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Bodoardo
Leitat Technological Center, Carrer de la Innoviació, 2 08225 Terrassa, Spain.
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Martinez Crespiera
Leitat Technological Center, Carrer de la Innoviació, 2 08225 Terrassa, Spain.
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Amantia
Department of Chemistry, Università di Torino, via P. Giuria 7, 10125 Torino, Italy.
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Biasizzo
Department of Chemistry, Università di Torino, via P. Giuria 7, 10125 Torino, Italy.
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Caldera
Department of Chemistry, Università di Torino, via P. Giuria 7, 10125 Torino, Italy.
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Trotta