DOUBLE-LAYER ACTIVE ELECTRODE FOR ELECTROCHEMICAL DEVICES USING SOLID ELECTROLYTE

FIELD: high-temperature electrochemistry and electrochemical power engineering. ^ SUBSTANCE: introduced in first layer of double-layer active electrode used for electrochemical devices filled with solid electrolyte incorporating mixture of powdered La1 - xSrxFe1 - yCOyO3 and doped with CeO2 is nanometric powder CuO and/or Cu2O; CeO2 doped with samarium or gadolinium, proportion of ingredients being as follows, mass percent: La1-xSrxFe0.8CO0.2O3 (x = 0.2-0.4), 69.5-36; Ce1 - xSmxO2 - delta (x - 0.1-0.2), 30-60; CuO and/or Cu2O, 0.5-4. Second layer is made of mixture of powdered La2-xSrxMnO3 (x = 0.2-0.4) and copper oxides (CuO and Cu2O) in amount of 9.7-99.5 and 0.5-3 mass percent, respectively. Nanometric powder of PrO2 - delta in amount of 5-10 mass percent is uniformly distributed in both electrode layers. ^ EFFECT: reduced polarization resistance, enhanced electric conductivity, time-independent operating stability in contact with solid electrolyte, and, hence, enhanced operating efficiency of electrode. ^ 1 cl, 1 dwg, 1 tbl