FIELD: chemistry, electrochemistry.
SUBSTANCE: invention refers to inorganic solid electrolytes, namely to composite solid electrolytes with high lithium ion conductivity within temperatures 150-220°C to be used in medium-temperature lithium rechargeable battery, electrochemical devices and sensors. According to the invention, composite electrolyte contains lithium perchlorate and heterogeneous additive γ-LiAlO2 of specific surface 30 m2/g or more in amount 30 to 70 vol % or magnesium oxide of specific surface 30 m2/g or more in amount 30 to 70 vol %.
EFFECT: high ionic conductivity of solid lithium-conducting electrolyte at least 10-2 reciprocal Ohm/cm at temperature 200°C, reduced expenditure of energy.
2 cl, 1 tbl, 3 ex
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