TY  - CONF
AU  - Frielinghaus, Henrich
AU  - He, Xin
AU  - Wang, Rui
AU  - Paillard, Elie-Elisée
AU  - Münster, Jie Li WWU
TI  - Morphological Changes of Metal Phosphides as Anode Materials in Lithium-Ion Batteries
PB  - DESY
M1  - FZJ-2017-00273
PY  - 2016
AB  - The binary metal phosphides (M-P, M= Cu, Fe, Sn, Sb) compounds are of great interest as negative electrode materials for high energy density lithium-ion batteries. However, the morphology and structural changes at the nanoscale upon electrochemical (de)lithiation are not clear yet, which require further detailed investigation. In-situ neutron scattering technique was utilized to investigate and compare the morphological changes of copper phosphide and tin phosphide during the initial cycle. By coupling with SEM investigation, the surface activities of the electrodes at different electrochemical state, including the SEI formation, swelling and recovering, cracks appearance and stripping at nanoscale of the material particles are evaluated. With in-situ XRD measurement, the energy storage mechanism was further explained. This work demonstrates useful techniques to analyze the detailed fatigue mechanisms of the active material, and provides new insights of the nanostructural changes of anode materials reacting with lithium via conversion and alloying.
T2  - Helmholtz programme „From Matter to Materials and Life“ - Workshop at DESY
CY  - 14 Dec 2016 - 16 Dec 2016, Hamburg (Germany)
Y2  - 14 Dec 2016 - 16 Dec 2016
M2  - Hamburg, Germany
LB  - PUB:(DE-HGF)6
UR  - https://juser.fz-juelich.de/record/826001
ER  -