%0 Journal Article
%A Lasri, Karima
%A Mahmoud, Abdelfattah
%A Saadoune, Ismael
%A Sougrati, Moulay Tahar
%A Stievano, Lorenzo
%A Lippens, Pierre-Emmanuel
%A Ehrenberg, Helmut
%A Hermann, Raphael
%T Toward understanding the lithiation/delithiation process in Fe0.5TiOPO4/C electrode material for lithium-ion batteries
%J Solar energy materials & solar cells
%V 148
%@ 0927-0248
%C Amsterdam
%I North Holland
%M FZJ-2016-00138
%P 11-19
%D 2016
%X Fe0.5TiOPO4/C composite was used as anode material for LIB and exhibits excellent cycling performance when the electrode is cycled in two different voltage ranges [3.0–1.3 V] and [3.0–0.02 V] where different insertion mechanisms were involved. A detailed in situ XANES spectroscopy study coupled to the electrochemical analyses, clearly established that the structure of Fe0.5TiOPO4/C electrode materials is preserved when cycled between 3.0 and 1.3 V. Furthermore, a formation of new phase at the end of first discharge was evidenced, with a reversible capacity of 100 mA h g−1 after 50 cycles at C/5 rate. At highly lithiated states, [3.0–0.02 V] voltage range, a reduction-decomposition reaction highlights the Li-insertion/extraction behaviors, and low phase crystallinity is observed during cycling, in addition an excellent rate behavior and a reversible capacity of 250 mA h g−1 can still be maintained after 50 cycles at high cycling rate 5C.
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000371944500003
%R 10.1016/j.solmat.2015.11.021
%U https://juser.fz-juelich.de/record/280354