A method for manufacturing of an electrolyte suitable for lamination of electrochromic devices, comprising the step of: mixing a solvent, an ionisable substance and a polymer in amounts giving an apparent Newtonian viscosity in the range of 5-1000 Pa·s at 22°C and a shear rate of 4 sec -1; said ionisable substance comprising a cation and an anion; said ionisable substance has an anion selected from the group of: OH -, F -, Cl -, Br -, I -, NO 3 -, N 2 -, BF 4 -, ClO 4 -, RSO 3 -, RCOO -, R2N -, RCON - PF 6 -, (CF 3) 2 PF 4 -, (CF 3) 3 PF 3 -, (CF 3) 4 PF 2 -, (CF 3) 5 PF -, (CF 3) 6 P -, CF3 n SO3 - (n=0..10), CF3CF2 2CO -, (CF3SO2)2CH -, (SF 5) 3 C -, (CF3SO2)3C -, CF3COO -, CH3COO -, SCN -, (CF 3 SO 2) 2 N -, (CF 3 CF 2 SO 2) 2 N -, 2 N -, oxalic anions, where R represents an organic group of arbitrary length C1∼C20 selected from one of the following types: alkyl, alkylamine, aryl or allyl; and said ionisable substance has a cation selected from the group of a cation from group 1 or 2 in the periodic table; and primary, secondary, tertiary or quartenary organic or inorganic amines; said solvent having a structure according to: wherein X is a carbon atom, nitrogen atom, oxygen atom or aryl group with arbitrary substituents on the aryl ring, with the proviso that when X is a nitrogen atom, R 2 is null, and when X is an oxygen atom, both R 1 and R 2 are null, and when X is an aryl group, R 1, R 2 and R 5 are all null; wherein R 1 is a hydrogen atom or a carbon-based group; wherein R 2 is a hydrogen atom or a carbon-based group; wherein R 3 is a hydrogen atom or a carbon-based group; wherein R 4 and R 5 individually are selected from a hydrogen atom or a carbon-based group or R 4 and R 5 together forming a carbon-based group, giving said solvent a ring structure; said polymer has a mole weight above 1000 g/mole; and said ionisable substance forming a solution of said cation and said anion together with said solvent. mixing a solvent, an ionisable substance and a polymer in amounts giving an apparent Newtonian viscosity in the range of 5-1000 Pa·s at 22°C and a shear rate of 4 sec -1; said ionisable substance comprising a cation and an anion; said ionisable substance has an anion selected from the group of: OH -, F -, Cl -, Br -, I -, NO 3 -, N 2 -, BF 4 -, ClO 4 -, RSO 3 -, RCOO -, R2N -, RCON - PF 6 -, (CF 3) 2 PF 4 -, (CF 3) 3 PF 3 -, (CF 3) 4 PF 2 -, (CF 3) 5 PF -, (CF 3) 6 P -, CF3 n SO3 - (n=0..10), CF3CF2 2CO -, (CF3SO2)2CH -, (SF 5) 3 C -, (CF3SO2)3C -, CF3COO -, CH3COO -, SCN -, (CF 3 SO 2) 2 N -, (CF 3 CF 2 SO 2) 2 N -, 2 N -, oxalic anions, where R represents an organic group of arbitrary length C1∼C20 selected from one of the following types: alkyl, alkylamine, aryl or allyl; and said ionisable substance has a cation selected from the group of a cation from group 1 or 2 in the periodic table; and primary, secondary, tertiary or quartenary organic or inorganic amines; said solvent having a structure according to: wherein X is a carbon atom, nitrogen atom, oxygen atom or aryl group with arbitrary substituents on the aryl ring, with the proviso that when X is a nitrogen atom, R 2 is null, and when X is an oxygen atom, both R 1 and R 2 are null, and when X is an aryl group, R 1, R 2 and R 5 are all null; wherein R 1 is a hydrogen atom or a carbon-based group; wherein R 2 is a hydrogen atom or a carbon-based group; wherein R 3 is a hydrogen atom or a carbon-based group; wherein R 4 and R 5 individually are selected from a hydrogen atom or a carbon-based group or R 4 and R 5 together forming a carbon-based group, giving said solvent a ring structure; said polymer has a mole weight above 1000 g/mole; and said ionisable substance forming a solution of said cation and said anion together with said solvent. wherein X is a carbon atom, nitrogen atom, oxygen atom or aryl group with arbitrary substituents on the aryl ring, with the proviso that when X is a nitrogen atom, R 2 is null, and when X is an oxygen atom, both R 1 and R 2 are null, and when X is an aryl group, R 1, R 2 and R 5 are all null; wherein R 1 is a hydrogen atom or a carbon-based group; wherein R 2 is a hydrogen atom or a carbon-based group; wherein R 3 is a hydrogen atom or a carbon-based group; wherein R 4 and R 5 individually are selected from a hydrogen atom or a carbon-based group or R 4 and R 5 together forming a carbon-based group, giving said solvent a ring structure; said polymer has a mole weight above 1000 g/mole; and said ionisable substance forming a solution of said cation and said anion together with said solvent.