FIELD: chemistry.
SUBSTANCE: invention relates to formulations of high-temperature sealants. Described is a composition of a high-temperature sealant for electrochemical devices with a solid electrolyte based on lanthanum gallate, containing silicon oxide as a glass former and corrective additives, in which, as correction additives, gallium, magnesium and sodium oxides are used with the following component ratio, wt%: SiO2 43÷60, Ga2O3 22÷38, Na2O 16÷17, MgO 2÷10.
EFFECT: obtaining a composition which enables to obtain gas-tight connection of separate fragments from a metal and a solid electrolyte based on La(Sr)Ga(Mg)O3, which are parts of an electrochemical device, in a single system, which ensures long-term operation of said electrochemical device.
1 cl, 10 dwg
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