SU1684650A1 - Method and device for determining relative diffusion potential of electrolytes - Google Patents

Abstract

The invention relates to the electrochemical treatment of articles, in particular, methods for studying the physical properties of electrolytes. The purpose of the invention is to improve the accuracy and speed of determination of the scattering ability of electrolytes. The voltage drop at the ends of the wire subjected to electrochemical treatment in the electrolyte under test is measured, and on the same wire and at the same current density in the reference electrolyte, and then the scattering power is calculated using the proposed simple formula. The device for implementing the method consists of a cell for the electrolyte under study with a working electrode in the form of a wire and an auxiliary electrode. The working electrode is fixed in the lock of linearity and is located along the normal to the surface of the auxiliary electrode. The current lead to the electrodes is made on opposite sides. Consistently with this cell are connected the same cell, but filled with a standard electrolyte, and a resistor with a resistance equal to the resistance of the working electrode, while both the cells and the resistor are provided with contacts for measuring the voltage drop. 2 sec. f-ly, 2 ill. (l c

Description

The invention relates to the electrochemical treatment of articles, in particular, methods for studying the physical properties of electrolytes.

The aim of the invention is to improve the accuracy and speed of the method for determining the relative dispersion ability.

Figures 1 and 2 schematically depict a device for implementing the proposed method.

The device includes an adjustable source 1 and a direct current recorder 2 and a sensor connected in series, consisting of a resistor 3 with resistance,

equal to the resistance of the working electrode, and the cells, one of which (4) is for the electrolyte under study, and the other (5) is the reference electrolyte, and contacts 6 for connecting voltmeters 7. The device also contains an analog computing device 8 with a device 9 for displaying information . Both cells (figure 2) are the same. Their working electrode 10 made of wire, foil or tape of the same material and of the same size is fixed in a straight line in the holder 11 along the normal to the surface of the auxiliary electrode 12. Both electrodes are placed in the cup 13 and have current leads 14. The method is carried out as follows.

About 00

4 o

ate about

An electrolyte is placed in the cell for investigation, the operating current 0 is set based on the required current density, and the voltage drop across the test and reference cells and the resistor is measured.

voltage at the ends of the working electrode of the cell, initially filled with the electrolyte under study, and then with a reference electrolyte, and the relative dissipative capacity (ORF) of the electrolyte is calculated by the equation

LFS

Up -U

i0-ie

where 11e is the voltage drop across the working electrode in the reference electrolyte;

Uo is the voltage drop at the working electrode in the electrolyte under study;

U is the voltage drop across the electrode, the relative dissipative ability is calculated. Measurements and calculations can be performed automatically if the signals corresponding to the voltage drops on the cells and the resistor are fed to an analog computing device operating according to an algorithm that corresponds to the equation and connected to the information display device (values of dissipative power in the form of fractions or percent) .

Claims (2)

1. A method for determining the discriminative ability of electrolytes, including measuring an electrical parameter on a working electrode, characterized in that, in order to increase, accuracy and expressivity, a drop 3 is measured 6 LFS Z0 -U Uo -U3 five 0 five 0 where U is the voltage drop across the working electrode in the reference electrolyte; Uo is the voltage drop at the working electrode, in the electrolyte under study; Da is the voltage drop across the working electrode in the reference electrolyte. 2. A device for determining the relative dissipative capacity of electrolytes, containing a cell for an electrolyte with an extended working electrode and an auxiliary electrode, which means that the working electrode is fixed straight and located along the normal to the surface of the auxiliary electrode, and the current lead to the working electrode is located on the opposite side of the auxiliary, a cell is connected in series with a similar cell with a reference electrolyte and a resistor with resistance equal to Remove the working electrode, and each of the cells and the resistor are provided with contacts to measure the voltage drop. 3 6 Schig.1 Schi z