SU1035496A1 - Electrode chamber - Google Patents

Description

The invention relates to laboratory technology, more specifically to electrochemical instrument making, and can be used in various electrochemical devices operating both under normal conditions and under microgravity conditions. An electrode chamber is known, comprising a housing with an electrode placed in it. The housing cavity is in communication with the atmosphere to exit the electrolysis gases. TO However, this chamber cannot be used under microgravity conditions, since under these conditions the electrolysis gases are not spontaneously removed from the electrode surface. The accumulation of gas bubbles on the surface of the electrode blocks it, which can lead to a complete cessation of current flow from the electrode. In addition, due to leakage of the vessel, electrolyte may leak into the environment. The closest k offered is an electrode chamber containing a housing with a semipermeable membrane in one of its walls and an electrode 23 placed in the housing. The known chamber can operate; . The removal of electrolysis gases from the electrodes in it is carried out by circulating the electrolyte in a closed circuit, into the main line of which a gas separator is introduced. A disadvantage of the known chamber is the instability of the gas outlet, due to the hydrodynamic method of removing the gas from the electrode. The purpose of the invention is to increase the stability of the device in conditions of Microgravity. The goal is achieved by the fact that a well-known electrically enclosed chamber containing a sealed enclosure with a semipermeable membrane in one of its walls and an electrode placed in the enclosure is made gas-permeable and contacts it with layers of neutral hydrophilic electrolyte-impregnated material and hydrophobic gas-permeable material by the surface. In this case, the electrolyte is taken saturated at the lowest possible operating temperature of the chamber. In addition, the layer of hydrophilic impregnated with electrolyte material contacts its other surface with a semi-permeable membrane. The gas bubble formed on the surface of the gas-permeable (perforated) electrode, where the hydrophilic, wetted with electrolyte and hydrophobic gas-permeable material adjoins, at its very inception is captured last and removed from the surface of the electrode. This ensures the constancy of the surface area of the electrode in contact with the electrolyte and, therefore, the stability of the current from the electrode. The use of an electrolyte saturated at the operating temperature of the chamber to impregnate a layer of hydrophilic material maximizes the service life of the electrode chamber, and making the layer of hydrophilic material wetted with electrolyte in the form of, for example, an insert filling the entire volume of the electrode chamber from the electrode to the semipermeable membrane allows It is easy and without pollution of the equipment to change the electrolyte solution when it is necessary to switch to a new mode of operation of the device. The drawing schematically shows an electrode chamber. The electrode chamber consists of a housing T with an ion-selective membrane 2 and an electrode 3 Placed between layers of hydrophilic material wetted with electrolyte and hydrophobic gas-permeable material 5. Close contact of the electrode with these layers can be ensured, for example, with a pressure nut 6 having perforation for the passage of gases into the environment or, if this is undesirable, to the adsorbent contained in vessel 7, which can be supplemented with an electrode chamber. Electrode camera works as follows. When voltage is applied to the electrodes 3 of both chambers, used, for example, in an electrophoresis device, electrolysis gases are generated on the electrodes. Gaseous products form on the surface of the electrode in the form of tiny bubbles, which at the initial stage of their formation

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are displaced by the surface of the impregnated and, by itself, the contact

the electrolyte of the layer k in the aperture of the surface porous with electrolyte

electrode, where they come into the contiguous electrode. A high concentration of ejection with a hydrophobic layer 5, seizing-roller, impregnating layer 4, gives

it is diverted by it and diverted into the surrounding large supply of buffer tank and among or, as shown in FIG. 1, allows you to maintain a given magnitude and is absorbed by the adsorbent. So the current for a long time,

bake a continuous gas outlet. Suggested echo chamber

electrolysis from the surface of the elektrodprost in the manufacture of, not energy-intensive.

Claims (3)

1. ELECTRODE CAMERA, containing a housing with a semipermeable membrane in one of its walls and an electrode placed in the housing, characterized in that, in order to increase the stability of the device under microgravity conditions, said electrode is made gas permeable and placed between the layers neutral hydrophilic impregnated with electrolyte material and hydrophobic gas-permeable material and in contact with them with its surface. 2. The chamber according to claim 1, I distinguish * n I with: the fact that the electrolyte is taken saturated at the lowest possible operating temperature of the chamber. 3. Camera by π. 1, which is characterized in that the layer of hydrophilic material impregnated with electrolyte § contacts its other surface with a semipermeable membrane. 1 1035496 ϊ