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New lithium ion batteries exploiting conversion/alloying anode and LiFe₀.₂₅Mn₀.₅Co₀.₂₅PO₄ olivine cathode

Di Lecce, D; Verrelli, R; Hassoun, J; (2016) New lithium ion batteries exploiting conversion/alloying anode and LiFe₀.₂₅Mn₀.₅Co₀.₂₅PO₄ olivine cathode. Electrochimica Acta , 220 pp. 384-390. 10.1016/j.electacta.2016.10.067. Green open access

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Abstract

New Li-ion cells are formed by combining a LiFe₀.₂₅Mn₀.₅Co₀.₂₅PO₄ olivine cathode either with Sn-Fe₂O₃-C composite anodes. These active materials exhibit electrochemical properties very attractive in view of practical use, including the higher working voltage of the LiFe₀.₂₅Mn₀.₅Co₀.₂₅PO₄ cathode with respect to conventional LiFePO₄, as well as the remarkable capacity and rate capability of Sn-Fe₂O₃-C and Sn-C anodes. The stable electrode/electrolyte interfaces, demonstrated by electrochemical impedance spectroscopy, along with proper mass balancing and anode pre-lithiation, allow stable galvanostatic cycling of the full cells. The two batteries, namely Sn-Fe₂O₃-C/LiFe₀.₂₅Mn₀.₅Co₀.₂₅PO₄ and Sn-C/LiFe₀.₂₅Mn₀.₅Co₀.₂₅PO₄, reversibly operate revealing promising electrochemical features in terms of delivered capacity, working voltage and stability, thus suggesting these electrodes combinations as suitable alternatives for an efficient energy storage.

Type: Article
Title: New lithium ion batteries exploiting conversion/alloying anode and LiFe₀.₂₅Mn₀.₅Co₀.₂₅PO₄ olivine cathode
Open access status: An open access version is available from UCL Discovery
DOI: 10.1016/j.electacta.2016.10.067
Publisher version: https://doi.org/10.1016/j.electacta.2016.10.067
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: olivine cathode, conversion, alloy anode, impedance spectroscopy, Li-ion battery
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Chemical Engineering
URI: https://discovery.ucl.ac.uk/id/eprint/10062425
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