Preparation method of CeO2 / MnO heterojunction composite electrode material

Abstract

The invention relates to a preparation method for preparing a CeO2 / MnO heterojunction composite electrode material by combining a hydrothermal synthesis reaction and a high-temperature in-situ reduction reaction, and belongs to the technical field of new energy materials. The prepared electrode material is regular in structure and excellent in electrochemical performance. Cerium nitrate (Ce (NO3) 3) is used as a Ce source, the Ce element is introduced into a MnO2 porous skeleton structure through a hydrothermal synthesis reaction technology to generate an intermediate Ce / MnO (OH), and then the intermediate Ce / MnO (OH) is converted into a CeO2 composite MnO electrode material through a high-temperature in-situ reduction technology, namely the CeO2 / MnO heterostructure. When the prepared CeO2 / MnO heterojunction composite electrode material is used as a positive electrode material of an AZIBs battery, the high reversible specific capacity of 201.7 mAh g <-1 > is shown after 400 cycles under the current density of 1A g <-1 >, and excellent electrochemical performance is achieved.

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