This title appears in the Scientific Report : 2016 

Toward understanding the lithiation/delithiation process in Fe0.5TiOPO4/C electrode material for lithium-ion batteries
Lasri, Karima
Mahmoud, Abdelfattah (Corresponding author) / Saadoune, Ismael / Sougrati, Moulay Tahar / Stievano, Lorenzo / Lippens, Pierre-Emmanuel / Ehrenberg, Helmut / Hermann, Raphael
Streumethoden; JCNS-2
JARA-FIT; JARA-FIT
Streumethoden; PGI-4
Solar energy materials & solar cells, 148 (2016) S. 11-19
Amsterdam North Holland 2016
10.1016/j.solmat.2015.11.021
Journal Article
Jülich Centre for Neutron Research (JCNS)
Materials and Processes for Energy and Transport Technologies
Quantum Condensed Matter: Magnetism, Superconductivity
Controlling Collective States
Controlling Collective States
Please use the identifier: http://dx.doi.org/10.1016/j.solmat.2015.11.021 in citations.
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.