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:
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:
La présente invention concerne des copolymères, leur procédé de préparation et leur utilisation pour l'élaboration de matériaux à conduction ionique. Un copolymère selon l'invention est constitué par des unités monomères répondant à la formule -CH2-O-CHR-CH2-O- (I) et des unités monomères répondant à la formule -CH2-CHR'-O- (II) dans lesquelles: R représente un atome d'hydrogène, un radical alkyle linéaire ou ramifié comportant de 1 à 8 atomes de carbone ou un radical CH3(-O-CH2-CH2)n-O-CH2-, dans lequel 1 n 10; R' représente un radical aliphatique présentant une insaturation polymérisable par voie radicalaire et inerte dans les conditions de polymérisation cationique. Les copolymères peuvent être obtenus par polymérisation cationiques de l'oxiranne et du dioxolane appropriés. Application à l'élaboration de matériaux à conduction ionique.
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:
The copolymer described is a segmented copolymer consisting essentially of organic segments A which have a number i of reactive ends such that i is from 1 to 6 inclusive, and segments B which have a number j of reactive ends such that j is from 1 to 6 inclusive. The segments B have redox properties and each segment A is connected to at least one segment B by a group Y and vice versa, the group Y being an ether, thioether, secondary amine, tertiary amine, secondary amide, tertiary amide, imide, quaternary ammonium group, or a group having a carbon-carbon bond. The respective weighted molar mean of i and j is 2 or more. Application to electrochemical generators and electrochromic systems.
摘要:
The copolymer described is a segmented copolymer consisting essentially of organic segments A which have a number i of reactive ends such that i is from 1 to 6 inclusive, and segments B which have a number j of reactive ends such that j is from 1 to 6 inclusive. The segments B have redox properties and each segment A is connected to at least one segment B by a group Y and vice versa, the group Y being an ether, thioether, secondary amine, tertiary amine, secondary amide, tertiary amide, imide, quaternary ammonium group, or a group having a carbon-carbon bond. The respective weighted molar mean of i and j is 2 or more. Application to electrochemical generators and electrochromic systems.
摘要:
The invention concerns an aprotic electrolytic composition located in the separator and in at least one composite electrode containing a powder of an active electrode material, and if necessary an electronic conduction additive of an electrochemical generator. The electrolytic composition comprises a first polymer matrix consisting of a polyether and at least a second polymer matrix, macroscopically separated, and also at least an alkaline salt as well as a polar aprotic solvent: The polymer matrices are capable of being swollen by at least one of the polar aprotic solvents. The solvent or mixture of solvents is unevenly distributed between the polymer matrices. The invention also concerns an electrochemical generator comprising a negative electrode and positive electrode reversible to alkaline ions and a separator with polymer electrolyte, the electrolytic component of which is the composition described above. The invention further concerns the manufacture in two or three steps of a subassembly of an electrochemical generator by coating an electrode support with a composite electrode containing the second matrix, followed by a surface coating on the electrode resulting from the preceding step with a solution containing the first polymer matrix so as to form the separator wholly or partly.