We propose lithium metal cells employing LiCF3SO3-tetraethylene glycol dimethy ether (TEGDME) electrolyte solution with LiFePO4 and LiMn0.5Fe0.5PO4 cathodes. The electrolyte is selected due to its nonflammability, herein demonstrated, and considered as a key requirement for application cells employing high energy lithium metal anode. The selected olivine cathodes, i.e., stable materials prepared by solvothermal pathway, have regular submicrometrical morphology suitable for cell operation and homogeneous composition, as confirmed by electron microscopy and energy dispersive X-ray spectroscopy. The electrochemical tests reveal promising cycling performances in terms of delivered capacity, stability and rate capability. The Li/LiCF3SO3-TEGDME/LiFePO4 cell operates at 3.5 V with capacity ranging from 150 mAh g-1 at C/10 to 110 mAh g-1 at 2C, while the Li/LiCF3SO3-TEGDME/LiFe0.5Mn0.5PO4 cell performs following two plateaus at 4.1 V and 3.5 V with capacity ranging from 160 mAh g-1 at C/10 to 75 mAh g-1 at 2C. Hence, the results demonstrate the suitability of TEGDME-based electrolytes in combination with LiFePO4 and LiFe0.5Mn0.5PO4 cathodes for high performances lithium battery.

Rechargeable lithium battery using non-flammable electrolyte based on tetraethylene glycol dimethyl ether and olivine cathodes / DI LECCE, Daniele; Carbone, Lorenzo; Gancitano, Vincenzo; Hassoun, Jusef. - In: JOURNAL OF POWER SOURCES. - ISSN 0378-7753. - STAMPA. - 334:(2016), pp. 146-153. [10.1016/j.jpowsour.2016.09.164]

Rechargeable lithium battery using non-flammable electrolyte based on tetraethylene glycol dimethyl ether and olivine cathodes

DI LECCE, DANIELE;CARBONE, LORENZO;HASSOUN, JUSEF
2016

Abstract

We propose lithium metal cells employing LiCF3SO3-tetraethylene glycol dimethy ether (TEGDME) electrolyte solution with LiFePO4 and LiMn0.5Fe0.5PO4 cathodes. The electrolyte is selected due to its nonflammability, herein demonstrated, and considered as a key requirement for application cells employing high energy lithium metal anode. The selected olivine cathodes, i.e., stable materials prepared by solvothermal pathway, have regular submicrometrical morphology suitable for cell operation and homogeneous composition, as confirmed by electron microscopy and energy dispersive X-ray spectroscopy. The electrochemical tests reveal promising cycling performances in terms of delivered capacity, stability and rate capability. The Li/LiCF3SO3-TEGDME/LiFePO4 cell operates at 3.5 V with capacity ranging from 150 mAh g-1 at C/10 to 110 mAh g-1 at 2C, while the Li/LiCF3SO3-TEGDME/LiFe0.5Mn0.5PO4 cell performs following two plateaus at 4.1 V and 3.5 V with capacity ranging from 160 mAh g-1 at C/10 to 75 mAh g-1 at 2C. Hence, the results demonstrate the suitability of TEGDME-based electrolytes in combination with LiFePO4 and LiFe0.5Mn0.5PO4 cathodes for high performances lithium battery.
LiFePO4; LiMn0.5Fe0.5PO4; lithium metal; non-flammable electrolyte; tetraethylene glycol dimethyl ether
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Rechargeable lithium battery using non-flammable electrolyte based on tetraethylene glycol dimethyl ether and olivine cathodes / DI LECCE, Daniele; Carbone, Lorenzo; Gancitano, Vincenzo; Hassoun, Jusef. - In: JOURNAL OF POWER SOURCES. - ISSN 0378-7753. - STAMPA. - 334:(2016), pp. 146-153. [10.1016/j.jpowsour.2016.09.164]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/912815
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