Crosslinkable copolymers obtained by polycondensation and ionically conductive material containing the same

• US 5,521,019 A
• Filed: 11/18/1994
• Issued: 05/28/1996
• Est. Priority Date: 08/14/1992
• Status: Expired due to Term

• Current Assignee: Centre National De La Recherche Scientifique, Hydro-Quebec (Province of Québec)
• Original Assignee: Centre National De La Recherche Scientifique, Hydro-Quebec (Province of Québec)
• Inventors: Armand, Michel, Alloin, Fannie, Sanchez, Jean-Yves
• Primary Examiner(s): Gorgos, Kathryn
• Application Number:
  US08/344,643
• Time in Patent Office: 557 Days
• Field of Search: 252/622, 429/30, 429/33, 429/192, 204/296, 106/287.23, 106/287.30, 106/287.32, 106/287.35, 521/27, 521/25
• US Class Current: 521/25
• CPC Class Codes: C08G 65/332 containing carboxyl groups, or halides, or esters thereof
• CPC Class Codes: H01B 1/122 Ionic conductors
• CPC Class Codes: H01M 10/052 Li-accumulators
• CPC Class Codes: H01M 10/0565 Polymeric materials, e.g. gel-type or solid-type
• CPC Class Codes: Y02E 60/10 Energy storage using batteries

Abstract

The invention relates to copolymers, a process for preparing them and their use for the production of ionically conductive materials. The copolymers consist of identical or different organic blocks A which cannot be crosslinked by a radical route or by a Diels-Alder reaction, each of which has a valency i such that 1≦i≦6, and identical or different blocks Z(CH₂)_j, in each of which Z denotes an organic radical which has a valency j such that 1≦j≦6, the radicals Z additionally containing at least one functional group permitting crosslinking by a radical route or by a Diels-Alder reaction; each block being joined to at least one other block by a functional group Y, the functional group Y being an ether functional group or a secondary or tertiary amine functional group. They are obtained by polycondensation of A(YH); monomers and Z(CH₂ X)_j monomers, wherein Y is a leaving group. They are useful in the production of ionically conductive materials.

Claims

1. Ionically conductive material containing a salt and a polymeric solid solvent, characterized in that the polymeric solvent consists essentially of at least one crosslinkable copolymer consisting of identical or different organic blocks A which cannot be crosslinked by a radical route or by a Diels-Alder reaction, each of which has a valency i such that 1≦

i≦

6 and identical or different blocks Z(CH₂)_j, in each of which Z denotes an organic radical which has a valency j such that 1≦

j≦

6, the radicals Z additionally containing at least one functional group permitting crosslinking by a radical route or by a Diels-Alder reaction;

each block A being joined to at least one block Z(CH₂)_j by a functional group Y and each block Z(CH₂)_j being joined to at least one block A by a functional group Y, the functional group Y being an ether functional group or a secondary or tertiary amine functional group;

the weighted molar mean of i and the weighted molar mean of j each being higher than or equal to 2.

2. Material according to claim 1, characterized in that the copolymer is crosslinked.

3. Material according to claim 1, characterized in that at least a proportion of the blocks A of the copolymer are solvating blocks.

4. Material according to claim 1, characterized in that the salt is chosen from the salts (1/mM) X^3-, M denoting an ion of a metal which has the valency m and is chosen from alkali metals, alkaline-earth metals, transition metals and the rare earths, or the ammonium, amidinium or guanidinium ions;

X³ denoting an anion with delocalized electronic charge, for example Br^-, ClO₄^-, AsF₆^-, R_F SO₃^-, (R_F SO₂)₂ N^-, (R_F SO₂)₃ C^- or (R_F SO₂)₂ CY^1-, R_F denoting a perfluoroalkyl or perfluoroaryl group and Y¹ denoting an electron-withdrawing group.

5. Material according to claim 1, comprising a solid solution of one or more salts in the copolymer, characterized in that the transport and the mobility of a metal cation M'"'"'ⁿ which has the valency n are provided by at least one complex anion corresponding to the general formula [M'"'"'(Z³)_n (Y³)_p ]^p-, formed between an anionic ligand (Z³)^-, an anionic ligand (Y³)^- and the cation M'"'"'ⁿ , with 1≦

n≦

5 and 1≦

p≦

3.