Polymer electrolyte, half-cell for electrochemical measurements, as well as the use thereof
View Patent ↗A polymer electrolyte for an electrochemical half-cell, such as a reference half-cell, contains a polymer which can be produced by polymerization of N-acryloyl-amino-ethoxy-ethanol or by co-polymerization of N-acryloyl-amino-ethoxy-ethanol with at least one further monomer component.
1. Half-cell for electrochemical measurements, comprising a polymer electrolyte comprising a polymer formed of N-acryloyl amino ethoxy ethanol or of N-acryloyl amino ethoxy ethanol co-polymerized with at least one further monomer component.
2. Half-cell according to claim 1 , wherein an open liquid connection is provided between the polymer electrolyte and a surrounding medium.
3. Half-cell according to claim 1 in combination with a potentiometric or amperometric sensor.
4. Half-cell according to claim 1 , wherein the polymer comprises a hydroxyl-alkyl-methacrylate as the further monomer component.
5. Half-cell according to claim 1 , wherein the polymer comprises a silylized alkyl-methacrylate as the further monomer component.
6. Half-cell according to claim 1 , wherein the polymer electrolyte additionally comprises a concentrated aqueous solution of a salt or of a salt mixture.
7. Half-cell according to claim 1 , wherein the polymer electrolyte additionally comprises a mixture of an organic solvent and an aqueous solution of a salt.
8. Half-cell according to claim 7 , wherein the organic solvent is selected from the group consisting of glycerin, ethylene glycol, methanol, ethanol, n-propanol, isopropanol, acetone and mixtures thereof.
9. Half-cell according to claim 6 , wherein the salt is present in suspended form.
10. Half-cell according to claim 6 , wherein the salt is selected from the group consisting of potassium chloride, sodium chloride, lithium chloride, potassium nitrate, potassium perchlorate, sodium formiate, lithium acetate, lithium sulfate, ammonium chloride, methyl-ammonium chloride, dimethyl-ammonium chloride, trimethyl-ammonium chloride and mixtures thereof.
11. Half-cell according to claim 1 , wherein the polymer electrolyte is a solid-phase electrolyte.
12. Half-cell according to claim 1 , wherein the half-cell is a reference half-cell.
13. Half-cell according to claim 4 , wherein the polymer comprises, as the further monomer component, 2-hydroxyl-ethyl-methacrylate and/or 3-hydroxyl-propyl-methacrylate.
14. Half-cell according to claim 5 , wherein the polymer comprises a 3-(tri-methoxy-silyl)-propyl-methacrylate as the further monomer component.
15. Half-cell according to claim 4 , wherein the polymer electrolyte additionally comprises concentrated aqueous solution of a salt or of a salt mixture.
16. Half-cell according to claim 4 , wherein the polymer electrolyte additionally comprises a mixture of an organic solvent and an aqueous solution of a salt.
17. Half-cell according to claim 7 , wherein the salt is present in suspended form.
18. Half-cell according to claim 7 , wherein the salt is selected from the group consisting of potassium chloride, sodium chloride, lithium chloride, potassium nitrate, potassium perchlorate, sodium formiate, lithium acetate, lithium sulfate, ammonium chloride, methyl-ammonium chloride, dimethyl-ammonium chloride, trimethyl-ammonium chloride and mixtures thereof.