FePO4 is a very promising electrode material for lithium batteries. The material is environmentally benign and is characterized by a high theoretical specific capacity (178 Ah/Kg). The application of this material is limited by the poor kinetics of its lithium intercalation process. In this paper we demonstrate that by using a synthesis procedure based on a wet chemistry route, α-quartz iron phosphate electrodes having enhanced electrochemical properties are obtained. The properties of this electrode may be further improved by finely dispersing RuO2 particles throughout its mass. We explain the beneficial effect of RuO2 by assuming that it induces a substantial enhancement of the FePO4 interparticle electronic contact. With this strategy of synthesis and additives we have fabricated electrodes capable of delivering reversible specific capacity as high as 110 mAh/g at a C/3 rate.

Improved quartz FePO4 as positive electrode for lithium batteries / F., Croce; A., Depifanio; Reale, Priscilla; L., Settimi; Scrosati, Bruno. - In: JOURNAL OF THE ELECTROCHEMICAL SOCIETY. - ISSN 0013-4651. - STAMPA. - 150:(2003), pp. A576-A581. [10.1149/1.1562933]

Improved quartz FePO4 as positive electrode for lithium batteries

REALE, Priscilla;SCROSATI, Bruno
2003

Abstract

FePO4 is a very promising electrode material for lithium batteries. The material is environmentally benign and is characterized by a high theoretical specific capacity (178 Ah/Kg). The application of this material is limited by the poor kinetics of its lithium intercalation process. In this paper we demonstrate that by using a synthesis procedure based on a wet chemistry route, α-quartz iron phosphate electrodes having enhanced electrochemical properties are obtained. The properties of this electrode may be further improved by finely dispersing RuO2 particles throughout its mass. We explain the beneficial effect of RuO2 by assuming that it induces a substantial enhancement of the FePO4 interparticle electronic contact. With this strategy of synthesis and additives we have fabricated electrodes capable of delivering reversible specific capacity as high as 110 mAh/g at a C/3 rate.
2003
Additives; Intercalation compounds; Lithium batteries; Morphology
01 Pubblicazione su rivista::01a Articolo in rivista
Improved quartz FePO4 as positive electrode for lithium batteries / F., Croce; A., Depifanio; Reale, Priscilla; L., Settimi; Scrosati, Bruno. - In: JOURNAL OF THE ELECTROCHEMICAL SOCIETY. - ISSN 0013-4651. - STAMPA. - 150:(2003), pp. A576-A581. [10.1149/1.1562933]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/341968
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