The
lithium and lithium-ion battery electrode chemical stability in the
pristine state has rarely been considered as a function of the binder
choice and the electrode processing. In this work, X-ray photoelectron
spectroscopy (XPS) and XPS imaging analyses associated with complementary
Mössbauer spectroscopy are used in order to study the chemical
stability of two pristine positive electrodes: (i) an extruded LiFePO4-based electrode formulated with different polymer matrices
[polyethylene oxide and a polyvinylidene difluoride (PVdF)] and processed
at different temperatures (90 and 130 °C, respectively) and (ii)
a Li[Ni0.5Mn0.3Co0.2]O2 (NMC)-based electrode processed by tape-casting, followed by a mild
or heavy calendering treatment. These analyses have allowed the identification
of reactivity mechanisms at the interface of the active material and
the polymer in the case of PVdF-based electrodes.
HAL is a multi-disciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L'archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d'enseignement et de recherche français ou étrangers, des laboratoires publics ou privés.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.