In this communication, we present a summary of the most recent results of our Research Group regarding the preparation, physico-chemical and electrochemical characterization of PE membranes (salt-in-polymer or single-ion conductors) based on different methacrylic and/or EO-based oligomers with several kinds of additives, salts, plasticizers and fillers. We use UV and/or thermal induced free radical polymerisation to produce highly crosslinked fully amorphous PEs. Crosslinking allows the incorporation of high amounts of plasticiser and TFSI– based lithium salt, withstanding homogeneity and robustness. Thermal stability > 300 °C and high Young’s modulus are achieved. Excellent ionic conductivity (> 5×10–4 S cm–1 at 25 °C), wide electrochemical window (>5 V vs. Li) and interfacial stability are envisaged, along with the ability to resist the lithium dendrite nucleation/growth. Remarkably stable ambient temperature cycling is demonstrated in lab-scale Li-/Na- or Li-S polymer cells at various C-rates with LiFePO4 and/or TiO2 electrodes. PE membranes are tested in dye-sensitized solar cells (DSSCs) upon proper modification. By introducing iodine/iodide-based redox mediator in the polymer matrix we achieve conversion efficiencies > 6% at 1 sun. Moreover, cobalt complexes are presented as high-potential redox mediator in quasi-solid DSSCs with stable-upon-time efficiencies. PEs and light-cured protective coatings are also demonstrated in photoelectrochromics for smart windows with highly stable characteristics and easy large scale manufacturing. In summary, we developed a portfolio of photopolymerized systems for multipurpose applications, the most recent outcome being the photochemical/environmental stabilization of perovskite solar cells.

Innovative photocured polymer electrolyte membranes for efficient energy storage and conversion systems / Bella, Federico; Colo', Francesca; Falco, Marisa; Meligrana, Giuseppina; Nair, JIJEESH RAVI; Gerbaldi, Claudio. - STAMPA. - (2016), pp. 12-12. (Intervento presentato al convegno The 8th Japanese-German-Italian Meeting of Electrochemists tenutosi a Kazusa Arc (Japan) nel December 2nd-4th, 2016).

Innovative photocured polymer electrolyte membranes for efficient energy storage and conversion systems

BELLA, FEDERICO;COLO', FRANCESCA;FALCO, MARISA;MELIGRANA, Giuseppina;NAIR, JIJEESH RAVI;GERBALDI, CLAUDIO
2016

Abstract

In this communication, we present a summary of the most recent results of our Research Group regarding the preparation, physico-chemical and electrochemical characterization of PE membranes (salt-in-polymer or single-ion conductors) based on different methacrylic and/or EO-based oligomers with several kinds of additives, salts, plasticizers and fillers. We use UV and/or thermal induced free radical polymerisation to produce highly crosslinked fully amorphous PEs. Crosslinking allows the incorporation of high amounts of plasticiser and TFSI– based lithium salt, withstanding homogeneity and robustness. Thermal stability > 300 °C and high Young’s modulus are achieved. Excellent ionic conductivity (> 5×10–4 S cm–1 at 25 °C), wide electrochemical window (>5 V vs. Li) and interfacial stability are envisaged, along with the ability to resist the lithium dendrite nucleation/growth. Remarkably stable ambient temperature cycling is demonstrated in lab-scale Li-/Na- or Li-S polymer cells at various C-rates with LiFePO4 and/or TiO2 electrodes. PE membranes are tested in dye-sensitized solar cells (DSSCs) upon proper modification. By introducing iodine/iodide-based redox mediator in the polymer matrix we achieve conversion efficiencies > 6% at 1 sun. Moreover, cobalt complexes are presented as high-potential redox mediator in quasi-solid DSSCs with stable-upon-time efficiencies. PEs and light-cured protective coatings are also demonstrated in photoelectrochromics for smart windows with highly stable characteristics and easy large scale manufacturing. In summary, we developed a portfolio of photopolymerized systems for multipurpose applications, the most recent outcome being the photochemical/environmental stabilization of perovskite solar cells.
File in questo prodotto:
Non ci sono file associati a questo prodotto.
Pubblicazioni consigliate

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11583/2660126
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo