Lorenzo
4 records found
1
Authored
The Fe4+/3+ Redox Mechanism in NaFeO2
A Simultaneous Operando Nuclear Resonance and X-ray Scattering Study
Simultaneous operando Nuclear Forward Scattering and transmission X-ray diffraction and 57Fe Mössbauer spectroscopy measurements were carried out in order to investigate the electrochemical mechanism of NaFeO2 vs. Na metal using a specifically designed in ...
Applying chemometrics to study battery materials
Towards the comprehensive analysis of complex operando datasets
In the last decade, a rapidly growing number of operando spectroscopy analyses have helped unravelling the electrochemical mechanism of lithium and post-lithium battery materials. The corresponding experiments usually produce large datasets containing many tens or hundreds of ...
Elucidating the origin of superior electrochemical cycling performance
New insights on sodiation-desodiation mechanism of SnSb from: Operando spectroscopy
As it has been recently shown in the literature, SnSb exhibits better performance in Na-ion than in Li-ion batteries in spite of its even larger volume expansion. Where is this special behaviour coming from? In this work, the reversible sodiation-desodiation reaction of SnSb w ...
The electrochemical cycling mechanism of the ternary intermetallic TiSnSb, a promising conversion-type negative electrode material for lithium batteries, was thoroughly studied by operando X-ray absorption spectroscopy (XAS) at three different absorption edges, i.e., Ti, Sn, a ...