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:
The invention concerns ionic compositions with high ionic conductivity, comprising a salt with delocalized anionic charge. An ionic composition comprises a salt dissolved in a solvent and has a conductivity higher than 10?-5 S.cm-1¿ between -30 °C and 150 °C. The cation is a proton, a hydronium, a hydroxonium, a nitrosonium NO+, an ammonium -NH¿4?+, or an organic or organometallic metal cation. The anion is a carbanion bearing a perfluorinated substituent or a substituent bearing at least a F on the α carbon of the carbanion, and two non-perfluorinated electroattractive substituents. Said composition can be used as electrolyte in electrochemical devices, as catalyst for chemical reactions, as photochemical or thermochemical initiator for polymerisation or cross-linking reactions.
摘要:
The invention concerns ionic compounds wherein the negative charge is highly delocalized. The compounds contain at least a perfluorovinyl group and at least a group selected among -O or one of the groups -NC N, -(C N)2, -NSO2R, -C[SO2R]2 or a pentacyclic group comprising at least a group N, C-C N, CR, CCOR, or CSO2R. The compounds and/or their polymers are useful for preparing material with ionic conduction, electrolytes and selective membranes.
摘要:
The invention concerns novel electrode materials derived from polyquinoid ionic compounds and their uses such as in electrochemical generators. It concerns in particular compounds such as a rhodizonic acid salt; a rufigallic acid salt; an ellagic acid salt; a thiocyanic acid polymer or 1-cyano-2-mercaptoacetylene; a polymer containing the units derived from ketopyridine; an alternate polymer containing benzoquinone and pyrazine units; a 1,2-dimercaptocyclobutenedione (dithiosquaric) acid salt; a 1,5-dihydropyrimido(5,4d)pyrimidine-2,4,6,8(3H,7H)-tetrone acid salt; a dicarboxylic acid salt whereof the groups are linked by conjugate segments; a polyamide derived from a dicarboxylic acid whereof the groups are linked by conjugate segments. The invention also concerns all the oxidation products of said compounds.
摘要:
The invention concerns an ionic compound of formula [R?1X1(Z1)-Q--X2(Z2)-R2]¿m Mm+ in which Mm+ is a cation of valence m, each of the X?i is S=Z3, S=Z4, P-R3 or P-R4¿; -Q is N, CR5, CCN or CSO¿2R?5, each of the Zi is =O, =NC N, =C(C N)¿2?, =NS(=Z)2R?6¿ or =C[S(=Z)¿2R?6]2, each of the Ri, is Y, YO-, YS-, Y¿2?N- or F; Y represents a monovalent organic radical or Y is a repeat unit of a polymeric fabric. The compounds are useful for preparing materials with ionic conduction or electrolyte, as catalysts and for doping polymers.
摘要:
The invention relates to an electrode material and a composite electrode including same. The electrode material consists of particles or particulate aggregates of a complex LiiMmM'm'ZzOoNnFf oxide, wherein M is at least one transition metal, M' is at least one metal other than a transition metal; Z is at least one non-metal; coefficients i, m, m', z, o, n and f are selected in such a way that the complex oxide is electrically neutral, with i = 0, m > 0, z = 0, m' =0, o > 0, n = 0 and f = 0. At least part of the complex oxide particle or particulate aggregate surface is coated with a carbon layer bound by chemical bonds and/or physical bonds to the carbon. The complex oxide has formula; the carbon has covalently bonded functional GF groups.