摘要:
The invention relates to a process for the preparation of carbon-deposited alkali metal oxyanion and the use thereof as cathode material in lithium secondary batteries wherein the process comprises synthesis of partially reacted alkali metal oxyanion, a wet-based nanomilling step, a drying step and a subsequent carbon deposition step performed by a thermal CVD process. The invention also relates to carbon deposited alkali metal oxyanion with less than 80 ppm of sulfur impurities for the preparation of a cathode of lithium secondary batteries with exceptional high-temperature electrochemical properties.
摘要:
The present invention relates to the field of electrode materials, and more specifically, to a carbon-deposited alkali metal oxyanion electrode material as well as to a process for preparing same. More particularly, the process for preparing the carbon-deposited alkali metal oxyanion electrode material comprises a dry milling step of precursors of the alkali metal oxyanion electrode material at an energy sufficient to cause the precursors to agglomerate into strong agglomerates, and a heating step comprising pyrolysis of an organic source to obtain the carbon-deposited alkali metal oxyanion electrode material.
摘要:
A process to induce polymerization of an organic electronically conductive polymer in the presence of a partially delithiated alkali metal phosphate which acts as the polymerization initiator.
摘要:
A process for preparing an at least partially lithiated transition metal oxyanion-based lithium−ion reversible electrode material, which includes providing a precursor of said lithium-ion reversible electrode material, heating said precursor, melting same at a temperature sufficient to produce a melt including 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. Also, lithiated or partially lithiated oxyanion-based-lithium-ion reversible electrode materials obtained by the aforesaid process.
摘要:
Process for the purification of an ionic electrolyte comprising at least one alkali metal salt, the process having at least one stage in which particles of at least one calcium salt are brought into contact. The process makes it possible to obtain electrolytes characterized in particular by a particularly low water content. The corresponding electrochemical generators which incorporate the electrolyte as constituent component are characterized by a noteworthy stability and are particularly safe.
摘要:
Ionic perfluorovinyl compounds and their uses as components of ionic conductors of the polymer type, of selective membranes or of catalysts. The compounds comprise at least one perfluorovinyl group and at least one group chosen from —O or one of the groups C≡N, —C(C≡N)2, —NSO2R or —C[SO2R]2 or a pentacyclic group comprising at least one N, C—C≡N, CR, CCOR or CSO2R group. The compounds and/or their polymers are of use in the preparation of ionically conducting materials, electrolytes and selective membranes.
摘要:
The present invention is concerned with novel polar solvents and novel electrolytic compositions comprising such solvents, and having a high range of stability, as required for applications in the field of electrochemistry. The present solvents have a highly polar amide function, and preferably combine with a salt soluble in the solvent and having an anion with a delocalized charge, and at least one polymer, to form an electrolytic composition.
摘要:
Ionic perfluorovinyl compounds and their uses as components of ionic conductors of the polymer type, of selective membranes or of catalysts. The compounds comprise at least one perfluorovinyl group and at least one group chosen from —O or one of the groups C≡N, —C(C≡N)2, —NSO2R or —C[SO2R]2 or a pentacyclic group comprising at least one N, C—C≡N, CR, CCOR or CSO2R group. The compounds and/or their polymers are of use in the preparation of ionically conducting materials, electrolytes and selective membranes.
摘要:
The present invention is concerned with cross-linked sulfonated polymers, eventually perfluorinated, and their preparation process. When molded in the form of membranes, the polymers are useful in electrochemical cells, in a chlorine-sodium electrolysis process, as separator in an electrochemical preparation or organic and inorganic compounds, as separators between an aqueous phase and an organic phase, or as catalyst for Diels-Alder additions, Friedel-Craft reactions, aldol concentrations, cationic polymerisation, esterification, and acetal formation.
摘要:
The invention relates to an ionic compound corresponding to the formula [R1X1(Z1)—Q−—X2(Z2)—R2]m Mm+ in which Mm+ is a cation of valency m, each of the groups Xi is S═Z3, S═Z4, P—R3 or P—R4; Q is N, CR5, CCN or CSO2R5, each of the groups Zi is ═O, ═NC≡N, ═C(C≡N)2, ═NS (═Z)2R6 or ═C[S(═Z)2R6]2, each of the groups Ri, is Y, YO—, YS—, Y2N— or F, Y represents a monovalent organic radical or alternatively Y is a repeating unit of a polymeric frame.The compounds are useful for producing ion conducting materials or electrolytes, as catalysts and for doping polymers.
摘要翻译:本发明涉及对应于式[R 1 X 1(Z 1)-Q - -X 2(Z 2)-R 2] m M的离子化合物 其中M 为化合价m的阳离子,基团X为S = Z 3,S = Z 4,PR 3或PR 4。 Q为N,CR 5,CCN或CSO 2 R 5,基团Z i为= O,= NC = N,= C(C = N)2,= NS(= Z) 6>或= C [S(= Z)2R 6] 2,基团R 1中的每一个为Y,YO-,YS-,Y2N-或F,Y表示一价有机基团,或者Y 是聚合物框架的重复单元。该化合物可用于制备离子传导材料或电解质,作为催化剂和掺杂聚合物。