Glycidyl-containing polymers, polymer compositions comprising them and their use in electrochemical cells
Glycidyl-containing polymers and polymer compositions comprising them are described, as well as their use in electrode materials and/or as coatings for battery components. Also described are electrode materials, electrodes, electrochemical cells and batteries comprising the polymers and their uses.
1 . An electrochemical cell comprising an internal component coated with a polymer composition containing a solvent, a catalyst for a carbon dioxide cycloaddition reaction, and a polymer of Formula I:
wherein:
R 1 and R 2 are each independently H or CH 3 ;
R 3 is selected from H, substituted or unsubstituted alkyl, substituted or unsubstituted aryl, substituted or unsubstituted CO 2 alkyl; and
n and m are integers, wherein n>0 and m is ≥0.
2 . The electrochemical cell of claim 1 , wherein R 3 :
(i) is a substituted aryl; or
(ii) is selected from H or a substituted or unsubstituted alkyl; or
(iii) is a substituted or unsubstituted CO 2 alkyl.
3 . The electrochemical cell of claim 1 , wherein the solvent is a solid solvent.
4 . The electrochemical cell of claim 1 , wherein the catalyst for the carbon dioxide cycloaddition reaction is an inorganic catalyst or an organic catalyst.
5 . The electrochemical cell of claim 1 , wherein the electrochemical cell component is an electrochemical cell shell and the polymer composition forms a coating on an internal surface of the electrochemical cell shell.
6 . A method for trapping CO 2 generated in an electrochemical cell as defined in claim 1 , the method comprising contacting said CO 2 with the polymer of Formula I.
7 . The method of claim 6 , further comprising the step of applying the polymer composition on a surface of an electrochemical cell component of the electrochemical cell.
8 . The method of claim 7 , wherein the electrochemical cell component is selected from a current collector, a thin film inert insertion, and an internal surface of an electrochemical cell shell.
9 . The electrochemical cell of claim 1 , wherein the polymer composition forms a coating on an internal surface of the electrochemical cell component.
10 . The electrochemical cell of claim 1 , wherein the electrochemical cell component is a current collector, a thin film inert insertion, or an internal surface of an electrochemical cell shell.
11 . A battery comprising an electrochemical cell as defined in claim 1 .
12 . The electrochemical cell of claim 4 , wherein the inorganic catalyst is lithium bromide.
13 . The electrochemical cell of claim 4 , wherein the organic catalyst is selected from the group consisting of quaternary ammonium salts, phosphonium salts, imidazolium salts, and any other known organic base catalysts for CO 2 cycloaddition.
14 . The battery of claim 11 , wherein said battery is selected from a lithium battery, a lithium-air battery, a lithium-sulfur battery, a lithium-ion battery, a sodium battery, and a magnesium battery.