Electrode Materials Based On Phosphates For Lithium Ion Batteries As An Efficient Energy Storage System
2015 (English)In: Proceedings of the TMS Middle East - Mediterranean Materials Congress on Energy and Infrastructure Systems (MEMA 2015) / [ed] Karaman, I; Arroyave, R; Masad, E, WILEY-BLACKWELL , 2015, 343-349 p.Conference paper (Refereed)
Co0.5TiOPO4 and LiFe0.4Mn0.6PO4 phosphates present the electrochemical features of anode and cathode of lithium ion batteries, respectively. The cobalt oxyphosphate exhibits a high capacity and a working potential around 1.5 V. During the first discharge, an irreversible lithiation reaction occurs while during the subsequent cycles, a good reversibility of the charge/discharge process was obtained with a stable specific capacity approaching 280 mAh/g even at high rate. For the LiFe0.4Mn0.6PO4 olivine, the electrochemical process occurs in two steps involving separately two redox couples: Mn3+/Mn2+ and Fe3+/Fe2+. The electrochemical lithiation/delithiation occur without significant changes in the structure. Even if the obtained capacity ( 110 mAh/g), is lower that the theoretical one, the coulombic storage efficiency is rather good ( 95%).
Place, publisher, year, edition, pages
WILEY-BLACKWELL , 2015. 343-349 p.
Energy storage, Li-ion Batteries, Phosphates
IdentifiersURN: urn:nbn:se:uu:diva-303215DOI: 10.1002/9781119090427.ch36ISI: 000380568300036ISBN: 9781119090427; 9781119065272OAI: oai:DiVA.org:uu-303215DiVA: diva2:971026
Proceedings of the TMS Middle East Mediterranean Materials Congress on Energy and Infrastructure Systems (MEMA 2015)