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 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 relates to a positive electrode composition containing at least one mixed oxide with a spinel or lamellar structure having general formula Li1-xM1-yAaO2-fFf, and at least one mixed phosphate having general formula Li1-zFenMnmPO4, wherein: M = Co, Ni, Mn, A = Mg, Zn, Al, Fe, Cr, Co, Mn, Ni, Zn Ga, 0 ≤ x, y, a, f ≤ 1, 0 ≤ z, n, m ≤ 1, and which operates in the 4.3 V ←→ 2.5 V voltage range with a voltage plateau located between said two values.
摘要:
A self-contained portable electronic component of credit card format comprises an accumulator (1) consisting of a pack of flat foils or layers having a surface area substantially the same as that of a credit card, at least one charging circuit (2, 4), and status indicators (6) controlled by a microcontroller (5).
摘要:
La présente invention concerne un composant électronique portable autonome en format carte de crédit, comprenant un accumulateur (1) constitué d'une association de feuilles ou couches planes dont la surface est sensiblement égale à celle de la carte de crédit, au moins un circuit de charge (2, 4), et des indicateurs d'état (6) pilotés par un microcontrôleur (5).