Preparation and application method of modified manganese dioxide electrode material

• Main Authors: LI ZHUOBIN, WANG SHIJIE, WANG HONGJIE, ZHANG YUNQI, LYU LIXING, CHI XIAOWEI, HOU LIJUAN
• Format: Patent
• Language: Chinese; English
• Published: 26.04.2022
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

The invention relates to a preparation method of a modified manganese dioxide electrode material, which comprises the following steps: adding manganese dioxide into a solution of a modified additive, then adding an organic solvent, a functional organic compound, a surfactant or a functional polymer, and carrying out molecular-level mixing; and quickly drying the mixed product, introducing a calcining atmosphere, carrying out heat-preservation calcining, and gradually heating during heat-preservation calcining. The preparation method has the beneficial effects that the prepared manganese dioxide electrode material has a coating protection layer containing at least one element of nickel, cobalt, aluminum, tungsten, strontium, titanium, zirconium, niobium, antimony, boron, magnesium, zinc and copper, the dissolution of the manganese dioxide material on an electrolyte interface in the charging and discharging process of a battery can be effectively inhibited, and the conductivity of a manganese dioxide positive e