Abstract

Synthesis of monoclinic Na 0.33 V 2 O 5 bronze by sol-gel processes and its electrochemical behaviour have been investigated. The four well defined processes evidenced in the potential window 3.5–2 V versus Li/Li + are discussed in terms of crystallographic data. The high reversibility of Li + ion insertion (≈70% of the initial faradaic yield after the 80th cycle) makes this compound a promising cathodic material for secondary lithium cells.

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