摘要:
The present invention relates to ionically conductive polymeric materials, to their preparation and to their use as a solid electrolyte. The materials comprise a solid solution of one or more salts in a polymer and are characterized in that the transport and the mobility of a metal cation M.sup.n+ which has the valency n, 1.ltoreq.n.ltoreq.5, are provided by at least one complex anion, corresponding to the general formula [MZ.sub.n Y.sub.p ].sup.p- formed between an anionic ligand Z.sup.-, an anionic ligand Y.sup.- and the cation M.sup.n+, with 1.ltoreq.p.ltoreq.3. Application to the formation of electrochemical generators and of electrochemical systems which make it possible to affect the transmission of light.
摘要:
This invention has as its subject a basic organo-mineral proton conducting polymer, produced by copolymerization of three precursors:a precursor based upon a trialkoxysilane, onto which a methane sulphonamide group is grafted by means of an alkyl or aryl link,a "deprotonizing" precursor based upon a trialkoxysilane, onto which is grafted a group derived from a nitrogenous base, preferably an imidazoline group, by means of an alkyl or aryl link,a "plasticizing" and solvating precursor, having at least one urea group which is the product of a reaction between a primary mono-, di- or triamine D and a trialkoxysilane E onto which an isocyanate group has been grafted by means of an alkyl link.
摘要:
An ionically conductive material useful in electrochemical generators is disclosed. This ionically material comprises a salt in solution in a solvent. The solvent comprises a sulfonated derivative of Formula (I):R.sub.1 R.sub.2 N--SO.sub.2 NR.sub.3 R.sub.4wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are each independently a C.sub.1-10 alkyl group or a C.sub.1-10 oxaalkyl group.
摘要:
A solid polymeric electrolyte comprises a macromolecular material in which there is dissolved an ionic compound, particularly an ionic compound in solution in a copolymer of ethylene oxide and a second unit selected so that the copolymer chain maintains a polyether characteristic. Also a high performance composite electrode embodying this electrolyte, and a process for obtaining this electrolyte.
摘要:
Polycarbon sulphide derivatives comprise units (R.sub.x CS.sub.m).sub.n in whichR represents hydrogen, an alkali metal or a transition metal,x is the degree to which R is present in the carbon-sulphur structure,m is the degree of substitution with sulphur andn is the number of units in the polymer chain.As shown by the single FIGURE of the drawing, the insertion of R is reversible.
摘要:
Macromolecular material of ionic conduction constituted by a salt in solution in a polyether. The polyether is polycondensed and/or cross-linked and presents at least two chains connected to each other by a bridge that comprises a silicon, cadmium, boron or titanium atom connected to one of the chains by an oxygen atom.Application to producing electrodes and electrolytes for electrochemical accumulators.
摘要:
The invention relates to materials for use as electrodes in an alkali-ion secondary (rechargeable) battery, particularly a lithium-ion battery. The invention provides transition-metal compounds having the ordered-olivine or the rhombohedral NASICON structure and the polyanion (PO4)3− as at least one constituent for use as electrode material for alkali-ion rechargeable batteries.
摘要:
The present invention concerns electrode materials capable of redox reactions by electron and alkali-ion exchange with an electrolyte. The applications are in the field of primary (batteries) or secondary electrochemical generators, supercapacitors and light modulating systems of the electrochromic type.
摘要:
The invention relates to a method for producing a battery using A+ (Li+ or Na+) as an electrochemical carrier, as well as to the resulting batteries. The method involves assembling together a negative electrode, a positive electrode, and an electrolyte, and then exposing the assembly to a firm charge at the operating temperature of the battery. The electrolyte is a ceramic or a solution of an A+ salt in a polar liquid, a polymer, or the mixture thereof. The active material of the negative electrode is a material which has a redox couple, the potential of which is 0 V to 1.6 V relative to the A+/A+ couple. The active material of the positive electrode is a material which has a redox couple, the potential of which is higher then that of the couple of the negative electrode. The positive electrode used during assembly consists of a current collector having a comprises material which contains the positive active material and at least one sacrificial salt of a cations E+ is selected from among Li+, Na+, K+ and the onium cations, and a redox action selected from azide anions, ketocarboxylate anions, and hydrazide anions, optionally in the form of a polymers.