The present invention relates to new anion exchange polymers and (blend) membranes made from polymers containing highly fluorinated aromatic groups by means of nucleophilic substitution and processes for their production by means of nucleophilic aromatic substitution and their areas of application in membrane processes, in particular in electrochemical membrane processes such as fuel cells, electrolysis and redox flow batteries.

The present invention relates to new anion exchange polymers and (blend) membranes made from polymers containing highly fluorinated aromatic groups by means of nucleophilic substitution and processes for their production by means of nucleophilic aromatic substitution and their areas of application in membrane processes, in particular in electrochemical membrane processes such as fuel cells, electrolysis and redox flow batteries.

The present invention relates to a solid polymer electrolyte comprising: at least one comb polymer comprising a main chain formed from 1-ethenyl- and/or 1-allyl-2,3,4,5,6-pentafluorobenzene monomers, some of the monomer units of the main chain bearing polymeric side chains based on polymers that are solvents for alkali metal or alkaline-earth metal salts; said chains being grafted in the para position of the pentafluorophenyl groups; and at least one alkali metal or alkaline-earth metal salt, in particular a lithium salt.

The invention also relates to a process for preparing a solid polymer electrolyte film and to the use thereof in an electrochemical system, in particular a lithium battery.

The present invention relates to a solid polymer electrolyte comprising: at least one comb polymer comprising a main chain formed from 1-ethenyl- and/or 1-allyl-2,3,4,5,6-pentafluorobenzene monomers, some of the monomer units of the main chain bearing polymeric side chains based on polymers that are solvents for alkali metal or alkaline-earth metal salts; said chains being grafted in the para position of the pentafluorophenyl groups; and at least one alkali metal or alkaline-earth metal salt, in particular a lithium salt.

The invention also relates to a process for preparing a solid polymer electrolyte film and to the use thereof in an electrochemical system, in particular a lithium battery.

Provided are a cathode hybrid electrolyte for a solid secondary battery, a cathode including the cathode hybrid electrolyte, a method of preparing the cathode, and a solid secondary battery including the cathode hybrid electrolyte, wherein the cathode hybrid electrolyte includes an ion conductor represented by Formula 1, and an ionic liquid, where at least a portion of the anions of the ionic liquid comprise the same anionic moiety Y.sup. of the ion conductor,

##STR00001##

where, in Formula 1, X, R.sub.1 to R.sub.3, Y.sup., and n are the same as defined in the detailed description.

Disclosed is a process for making nitrated styrenic fluoropolymers having various degrees of substitution. The nitrated styrenic fluoropolymer is capable of providing an exceptionally high birefringence ranging from 0.02 to 0.036. Further, the birefringence can be tuned by varying the degree of substitution (DS) of the nitro group on the styrenic ring to meet the need for optical compensation film applications. More particularly, the optical compensation films of the present invention are for use in an in-plane switching LCD (IPS-LCD) and OLED display.

Disclosed is a process for making nitrated styrenic fluoropolymers having various degrees of substitution. The nitrated styrenic fluoropolymer is capable of providing an exceptionally high birefringence ranging from 0.02 to 0.036. Further, the birefringence can be tuned by varying the degree of substitution (DS) of the nitro group on the styrenic ring to meet the need for optical compensation film applications. More particularly, the optical compensation films of the present invention are for use in an in-plane switching LCD (IPS-LCD) and OLED display.

Optical compensation films based on polymer blends formed from particular compositions of a styrenic fluoropolymer and acrylic copolymers are provided. The optical compensation films have desirable mechanical and optical properties such as haze, elongation at break, Young's modulus, in-plane retardation, and out-of-plane retardation. The optical compensation films are suitable for use in display devices such as those in televisions, computers, automobiles, and mobile phones.

Provided are a cathode hybrid electrolyte for a solid secondary battery, a cathode including the cathode hybrid electrolyte, a method of preparing the cathode, and a solid secondary battery including the cathode hybrid electrolyte, wherein the cathode hybrid electrolyte includes an ion conductor represented by Formula 1, and an ionic liquid, where at least a portion of the anions of the ionic liquid comprise the same anionic moiety Y.sup. of the ion conductor, ##STR00001##
where, in Formula 1, X, R.sub.1 to R.sub.3, Y.sup., and n are the same as defined in the detailed description.

Provided are a cathode hybrid electrolyte for a solid secondary battery, a cathode including the cathode hybrid electrolyte, a method of preparing the cathode, and a solid secondary battery including the cathode hybrid electrolyte, wherein the cathode hybrid electrolyte includes an ion conductor represented by Formula 1, and an ionic liquid, where at least a portion of the anions of the ionic liquid comprise the same anionic moiety Y.sup.? of the ion conductor,

##STR00001##

where, in Formula 1, X, R.sub.1 to R.sub.3, Y.sup.?, and n are the same as defined in the detailed description.