METHOD TO PREPARE A COATED CURRENT COLLECTOR ELECTRODE FOR A FLOW THROUGH CAPACITOR USING TWO SOLVENTS WITH DIFFERENT BOILING TEMPERATURE

摘要

The invention relates to a method to prepare a coated current collector electrode of a flow through capacitor. The method comprising preparing a coating paste comprising: 10 - 50 weight % of carbon having a specific surface area of at least 500 m2/g; 0.3 - 5 weight % of a binder; 10 - 50 weight % based on the total paste of a first solvent having a first boiling point; and, 10 - 50 weight % based on the total paste of a second solvent having a second boiling point; applying the coating paste on a current collector; and, allowing the second solvent in the coating paste applied on the current collector to evaporate at a temperature lower than the first boiling point. The method further comprises applying the coating paste on a current collector; and, allowing the second solvent in the coating paste applied on the current collector to evaporate at a temperature lower than the first boiling point.