Dany Carlier

TL;DR: Samples obtained by thermal-treatment of FePO(4)·H(2)O also intercalate lithium ions through the reduction of Fe(3+) to Fe(2+) at an average voltage of ~2.6 V, with a good cyclability and a reversible capacity around 120 mA h g(-1) during the first discharge.

TL;DR: In this article, the electron spins on the e orbitals of Co2+ ions (e4 t23 electronic configuration) are transferred toward the two different types of Li with opposite polarization, and they have carried out GGA and GGA+U calculations of the electronic structure using the VASP code.

TL;DR: In this article, the experimental measurements and DFT calculations of the NMR Fermi contact shifts for 7Li, 31P, and 1H in the tavorite LiFePO4·OH and homeotypic FePO 4·H2O, LiMnPO4•OH, Mn...

TL;DR: Layered oxide compositions Li3-xNaxNi2SbO6 have been prepared by solid-state synthesis and a complete solid solution is evidenced and characterized by X-ray and neutron diffraction as well as 7Li and 23Na solid- state nuclear magnetic resonance spectroscopy.

Abstract: Sodium-rich iron hexacyanoferrates were prepared by coprecipitation, hydrothermal route, and under reflux, with or without dehydration. They were obtained with different structures described in cubic, orthorhombic, or rhombohedral symmetry, with variable compositions in sodium, water, and cationic vacancies and with a variety of morphologies. This series of sodium-rich Prussian blue analogues allowed addressing the relationship between synthesis conditions, composition, structure, morphology, and electrochemical properties in Na-ion batteries. A new orthorhombic phase with the Na1.8Fe2(CN)6·0.7H2O composition synthesized by an hydrothermal route at 140 °C is reported for the first time, whereas a phase of Na2Fe2(CN)6·2H2O composition obtained under reflux, previously described with a monoclinic structure, shows in fact a rhombohedral structure.