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EnglishA wide interest is mounting towards polymer electrolytes, due to their application in energy efficient rechargeable batteries, photo-electrochemical cells, electrochromics, and supercapacitors. Polymer electrolytes exhibit unique advantages such as mechanical integrity, wide variety of fabrication methods in desirable size and shape, possibility to fabricate an intimate electrode/electrolyte interface and adapt to a lightweight, leak-proof construction, and economic packaging structure. In this communication, we offer a summary of our results regarding the synthesis, physico-chemical and electrochemical characterization of solid polymer electrolytes (SPEs) based on different monomers/oligomers (methacrylic and/or ethylene oxide based) with specific amounts of lithium salt, plasticizers and/or fillers. Profoundly ion conducting (σ > 10–4 S cm–1 at 20 °C), electrochemically stable (> 5 V vs. Li), self-standing, robust and tack-free SPEs are successfully prepared via a rapid and easily up-scalable process including a light and/or thermally induced polymerization step. The resulting crosslinking allows the incorporation of high amounts of plasticisers (e.g., RTILs) and lithium salt (based on TFSI– anion), leading to a material with remarkable morphological characteristics in terms of homogeneity and mechanical abusability under highly stressful conditions. Lab-scale Li-polymer cells assembled show stable charge/discharge characteristics without any capacity fading at C/5 current regime (> 130 mAh g–1 in LiFePO4/Li configuration and > 150 mAh g–1 in TiO2/Li configuration even @ 20 °C). The overall performance of the SPEs postulates the possibility of effective implementation in the next generation of safe, durable and high energy density secondary all-solid Li-ion polymer batteries working at ambient and/or sub-ambient temperatures.
Towards High Energy Density Aging Resistant Li-ion Polymer Batteries / Nair, J. R.; Falco, M.; Bella, F.; Meligrana, G.; Lin, R.; Fantini, S.; Moreno, M.; Appetecchi, G. B.; Gerbaldi, C.. - ELETTRONICO. - 3(2017), pp. 91-91. ((Intervento presentato al convegno XXVI Congresso Nazionale della Società Chimica Italiana tenutosi a Paestum (Italy) nel 10-14 Settembre 2017.
| Titolo: | Towards High Energy Density Aging Resistant Li-ion Polymer Batteries | |
| Autori: | ||
| Data di pubblicazione: | 2017 | |
| Abstract: | A wide interest is mounting towards polymer electrolytes, due to their application in energy efficient rechargeable batteries, photo-electrochemical cells, electrochromics, and supercapacitors. Polymer electrolytes exhibit unique advantages such as mechanical integrity, wide variety of fabrication methods in desirable size and shape, possibility to fabricate an intimate electrode/electrolyte interface and adapt to a lightweight, leak-proof construction, and economic packaging structure. In this communication, we offer a summary of our results regarding the synthesis, physico-chemical and electrochemical characterization of solid polymer electrolytes (SPEs) based on different monomers/oligomers (methacrylic and/or ethylene oxide based) with specific amounts of lithium salt, plasticizers and/or fillers. Profoundly ion conducting (σ > 10–4 S cm–1 at 20 °C), electrochemically stable (> 5 V vs. Li), self-standing, robust and tack-free SPEs are successfully prepared via a rapid and easily up-scalable process including a light and/or thermally induced polymerization step. The resulting crosslinking allows the incorporation of high amounts of plasticisers (e.g., RTILs) and lithium salt (based on TFSI– anion), leading to a material with remarkable morphological characteristics in terms of homogeneity and mechanical abusability under highly stressful conditions. Lab-scale Li-polymer cells assembled show stable charge/discharge characteristics without any capacity fading at C/5 current regime (> 130 mAh g–1 in LiFePO4/Li configuration and > 150 mAh g–1 in TiO2/Li configuration even @ 20 °C). The overall performance of the SPEs postulates the possibility of effective implementation in the next generation of safe, durable and high energy density secondary all-solid Li-ion polymer batteries working at ambient and/or sub-ambient temperatures. | |
| ISBN: | 9788886208833 | |
| Appare nelle tipologie: | 4.3 Poster |
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