摘要:
The invention relates to a process for preparing an at least partially lithiated transition metal oxyanion-based lithium-ion reversible electrode material, which comprises providing a precursor of said lithium-ion reversible electrode material, heating said precursor, melting same at a temperature sufficient to produce a melt comprising an oxyanion containing liquid phase, cooling said melt under conditions to induce solidification thereof and obtain a solid electrode that is capable of reversible lithium ion deinsertion/insertion cycles for use in a lithium battery. The invention also relates to lithiated or partially lithiated oxyanion-based-lithium-ion reversible electrode materials obtained by the aforesaid process.
摘要:
The invention concerns novel ionic compounds with low melting point whereof the onium type cation having at least a heteroatom such as N, O, S or P bearing the positive charge and whereof the anion includes, wholly or partially, at least an ion imidide such as (FX?1O)N-(OX2¿F) wherein X?1 and X2¿ are identical or different and comprise SO or PF, and their use as solvent in electrochemical devices. Said composition comprises a salt wherein the anionic charge is delocalised, and can be used, inter alia, as electrolyte.
摘要:
An ionic conducting material, the preparation thereof and uses of said material are disclosed. The material includes at least one solution of at least one ionic compound in an aprotic solvent, which compound is selected from compounds (1/mM)+[(ZY)2N]-, (1/mM)+[(ZY)3C]-, (1/mM)+[(ZY)2CQ]-, Wherein Y is SO¿2? or POZ; Q is -H, -COZ or Z; each substituent Z is independently a fluorine atom or an optionally perfluorinated organic group optionally having at least one polymerisable function, one of substitutents Z being a fluorine atom; and M is a cation. The material is useful in electrochemical generators, supercapacitors, polymer doping and electrochromic devices.
摘要:
Disclosed is a method for grafting a polymer onto the surface of a carbonate material with carboxyl, amine, and/or hydroxyl functions on its surface. Said material is placed in suspension in a solution including the polymer to be grafted, which has a carboxyl, amine, and/or hydroxyl function, said solution also being comprised of a polymer solvent. A process which stimulates the dehydration into a carboxyl function of an amine and/or hydroxyl function is then performed, and the polymer is grafted onto the carbonate material using ester or amide links. The invention can be used in the cathode or naode of an electrochemical generator, in polymer materials with low polar properties, in ink, and also as a conductive coating on flexible plastic used as an electrical contact, as electromagnetic shielding, or as static protection.
摘要:
New ionic conduction material comprised of a salt diluted in a liquid solvent. The salt is represented by one of the following formulae: M[RF-SO2-N-SO2-R'F]; M[RF-SO2-N-CO-R'F]; M[RF-CO-N-CO-R'F], or formula (IV). Application to electrochemistry.
摘要:
Nouveau matériau à conduction ionique constitué par un sel en solution dans un solvant liquide. Le sel est représenté par une des formules suivantes: M[RF-SO2-N-SO2-R'F]; M[RF-SO2-N-CO-R'F]; M[RF-CO-N-CO-R'F] ou encore la formule (IV). Application à l'électrochimie.
摘要:
Disclosed is a method for grafting a polymer onto the surface of a carbonate material with carboxyl, amine, and/or hydroxyl functions on its surface. Said material is placed in suspension in a solution including the polymer to be grafted, which has a carboxyl, amine, and/or hydroxyl function, said solution also being comprised of a polymer solvent. A process which stimulates the dehydration into a carboxyl function of an amine and/or hydroxyl function is then performed, and the polymer is grafted onto the carbonate material using ester or amide links. The invention can be used in the cathode or naode of an electrochemical generator, in polymer materials with low polar properties, in ink, and also as a conductive coating on flexible plastic used as an electrical contact, as electromagnetic shielding, or as static protection.