Apparatus for producing non-aqueous electrolytic solution and method for producing non-aqueous electrolytic solution
The apparatus for producing a non-aqueous electrolytic solution includes: a moisture adsorption apparatus accommodating zeolite through which an organic non-aqueous solvent passes, an electrolyte addition apparatus for adding an alkali metal salt electrolyte to the organic non-aqueous solvent treated by the moisture adsorption apparatus, and an acid adsorption apparatus accommodating a weakly basic anion exchange resin through which an alkali metal salt electrolyte-containing solution obtained by the electrolyte addition apparatus passes.
1. A system for producing a non-aqueous electrolytic solution comprising:
an organic non-aqueous solvent,
a moisture adsorption apparatus accommodating a Ca-exchanged crystalline zeolite through which the organic non-aqueous solvent passes,
an electrolyte addition apparatus for adding an alkali metal salt electrolyte to the organic non-aqueous solvent treated by the moisture adsorption apparatus, and
an acid adsorption apparatus accommodating an anion exchange resin through which an alkali metal salt electrolyte-containing solution obtained by the electrolyte addition apparatus passes; wherein
the content of the alkali metal in the organic non-aqueous solvent is 0 to 0.005 mol/L;
the organic non-aqueous solvent comprises a carbonate ester;
the anion exchange resin has a substrate of styrene-based resin and has tertiary amino groups represented by general formula (I) and general formula (II):
where R 1 and R 2 are hydrocarbon groups having 1 to 3 carbon atoms and may be the same or different from each other, and * represents a bonding site bonding with the substrate,
where R 1 and R 2 are hydrocarbon groups having 1 to 3 carbon atoms, which may be the same or different from each other, R 3 is a hydrocarbon group having 1 to 3 carbon atoms, and * represents a bonding site bonding with the substrate; and
the Ca-exchanged crystalline zeolite through which the organic non-aqueous solvent passes is a Ca-exchanged crystalline zeolite having 98 mol % or more of Na ions exchanged with Ca ions.
2. A method for producing a non-aqueous electrolytic solution, comprising:
passing an organic non-aqueous solvent through a Ca-exchanged crystalline zeolite,
adding an alkali metal salt electrolyte to the organic non-aqueous solvent treated during the passing of the organic non-aqueous solvent through the Ca-exchanged crystalline zeolite, and
passing an alkali metal salt electrolyte-containing solution obtained during the adding of the alkali metal salt electrolyte to the organic non-aqueous solvent through an anion exchange resin; wherein
the content of the alkali metal in the organic non-aqueous solvent is 0 to 0.005 mol/L;
the organic non-aqueous solvent comprises a carbonate ester;
the anion exchange resin has a substrate of styrene-based resin and has tertiary amino groups represented by general formula (I) and general formula (II):
where R 1 and R 2 are hydrocarbon groups having 1 to 3 carbon atoms and may be the same or different from each other, and * represents a bonding site bonding with the substrate,
where R 1 and R 2 are hydrocarbon groups having 1 to 3 carbon atoms, which may be the same or different from each other, R 3 is a hydrocarbon group having 1 to 3 carbon atoms, and * represents a bonding site bonding with the substrate; and
the Ca-exchanged crystalline zeolite through which the organic non-aqueous solvent passes is a Ca-exchanged crystalline zeolite having 98 mol % or more of Na ions exchanged with Ca ions.