Preparation method of single-layer flaky lithium-rich manganese-based positive electrode material of graphene template

• Main Author: SHENG MAOHUA
• Format: Patent
• Language: Chinese; English
• Published: 22.05.2018
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

The invention discloses a preparation method of a single-layer flaky lithium-rich manganese-based positive electrode material of a graphene template and belongs to the technical field of lithium-ion batteries. The preparation method comprises the steps of adding the template into deionized water for dispersing evenly; adding a chelating agent for dissolving, and then slowly adding a mixed salt solution of a lithium salt, a nickel salt, a cobalt salt and a manganese salt; adding ammonia water to adjust the pH, carrying out heating and stirring in water bath until a solution is in a gel form andcarrying out freeze drying until gel is dehydrated; and putting the frozen and dried powder into a muffle furnace for burning according to a certain sintering curve to obtain the single-layer flaky lithium-rich manganese-based positive electrode material of the graphene template. The single-layer flaky lithium-rich manganese-based positive electrode material of the graphene template is prepared by adopting a sol-gel free