TY  - JOUR
AU  - Lasri, Karima
AU  - Mahmoud, Abdelfattah
AU  - Saadoune, Ismael
AU  - Sougrati, Moulay Tahar
AU  - Stievano, Lorenzo
AU  - Lippens, Pierre-Emmanuel
AU  - Ehrenberg, Helmut
AU  - Hermann, Raphael
TI  - Toward understanding the lithiation/delithiation process in Fe0.5TiOPO4/C electrode material for lithium-ion batteries
JO  - Solar energy materials & solar cells
VL  - 148
SN  - 0927-0248
CY  - Amsterdam
PB  - North Holland
M1  - FZJ-2016-00138
SP  - 11-19
PY  - 2016
AB  - 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.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000371944500003
DO  - DOI:10.1016/j.solmat.2015.11.021
UR  - https://juser.fz-juelich.de/record/280354
ER  -