Preparation method of copper oxide porous nanosheet and application of copper oxide porous nanosheet in sodium ion battery positive electrode material

• Main Authors: WANG KAIXIN, HAN CHENGLIANG, ZHAO SHIWEI, CHEN BENSONG
• Format: Patent
• Language: Chinese; English
• Published: 26.04.2024
• Subjects: BASIC ELECTRIC ELEMENTS; CHEMISTRY; COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F; ELECTRICITY; INORGANIC CHEMISTRY; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; METALLURGY; NANOTECHNOLOGY; PERFORMING OPERATIONS; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; TRANSPORTING

The invention discloses a preparation method of a copper oxide porous nanosheet and application of the copper oxide porous nanosheet in a sodium-ion battery positive electrode material, and relates to the field of sodium-ion battery positive electrode materials, CO2 gas is continuously blown into a NaOH solution containing Cu < 2 + >, copper ions are precipitated under the regulation and control of NaOH as a template agent to react to prepare basic copper carbonate powder, and the basic copper carbonate powder is sintered at high temperature to prepare the CuO porous nanosheet. The prepared CuO porous sheet is integrally in a sheet shape and has a porous microstructure, so that the specific surface area of the CuO porous sheet is relatively large (177 m < 2 >/g), the average pore size of pores is 20 nm, and the volume of the pores is 2.75 cc/g. The rich pore structure can promote better infiltration of an electrolyte, provide an ion transmission channel and relieve the volume change of the electrode material